java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:55:05,736 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:55:05,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:55:05,750 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:55:05,750 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:55:05,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:55:05,752 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:55:05,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:55:05,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:55:05,757 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:55:05,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:55:05,758 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:55:05,759 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:55:05,760 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:55:05,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:55:05,762 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:55:05,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:55:05,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:55:05,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:55:05,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:55:05,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:55:05,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:55:05,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:55:05,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:55:05,776 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:55:05,777 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:55:05,778 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:55:05,780 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:55:05,781 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:55:05,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:55:05,782 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:55:05,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:55:05,783 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:55:05,783 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:55:05,784 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:55:05,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:55:05,785 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:55:05,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:55:05,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:55:05,811 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:55:05,811 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:55:05,811 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:55:05,811 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:55:05,812 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:55:05,813 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:55:05,813 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:55:05,814 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:55:05,814 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:55:05,814 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:55:05,814 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:55:05,814 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:55:05,814 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:55:05,815 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:55:05,815 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:55:05,815 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:55:05,815 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:55:05,816 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:55:05,816 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:55:05,816 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:55:05,816 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:55:05,816 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:55:05,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:55:05,817 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:55:05,817 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:55:05,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:55:05,817 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:55:05,817 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:55:05,818 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:55:05,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:55:05,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:55:05,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:55:05,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:55:05,891 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:55:05,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-10-27 08:55:05,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3df98d873/ee71317149bb4469a0301c87a4058c80/FLAG51fc39312 [2018-10-27 08:55:06,842 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:55:06,843 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-10-27 08:55:06,893 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3df98d873/ee71317149bb4469a0301c87a4058c80/FLAG51fc39312 [2018-10-27 08:55:06,909 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3df98d873/ee71317149bb4469a0301c87a4058c80 [2018-10-27 08:55:06,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:55:06,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:55:06,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:55:06,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:55:06,932 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:55:06,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:55:06" (1/1) ... [2018-10-27 08:55:06,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a445e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:06, skipping insertion in model container [2018-10-27 08:55:06,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:55:06" (1/1) ... [2018-10-27 08:55:06,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:55:07,217 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:55:09,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:55:09,747 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:55:10,886 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:55:10,944 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:55:10,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10 WrapperNode [2018-10-27 08:55:10,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:55:10,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:55:10,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:55:10,946 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:55:10,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:55:11,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:55:11,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:55:11,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:55:11,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:11,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:12,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... [2018-10-27 08:55:12,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:55:12,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:55:12,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:55:12,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:55:12,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:55:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 08:55:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 08:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 08:55:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 08:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 08:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 08:55:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:55:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:55:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:55:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:55:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:55:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:55:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:55:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:55:30,948 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:55:30,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:55:30 BoogieIcfgContainer [2018-10-27 08:55:30,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:55:30,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:55:30,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:55:30,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:55:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:55:06" (1/3) ... [2018-10-27 08:55:30,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1672be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:55:30, skipping insertion in model container [2018-10-27 08:55:30,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:55:10" (2/3) ... [2018-10-27 08:55:30,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1672be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:55:30, skipping insertion in model container [2018-10-27 08:55:30,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:55:30" (3/3) ... [2018-10-27 08:55:30,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label34_true-unreach-call.c [2018-10-27 08:55:30,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:55:30,978 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:55:30,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:55:31,048 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:55:31,049 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:55:31,049 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:55:31,049 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:55:31,049 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:55:31,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:55:31,050 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:55:31,050 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:55:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 08:55:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 08:55:31,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:55:31,119 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:55:31,122 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:55:31,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:55:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203938, now seen corresponding path program 1 times [2018-10-27 08:55:31,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:55:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:31,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:55:31,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:31,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:55:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:55:31,633 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:55:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:55:31,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:55:31,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:55:31,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:55:31,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:55:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:55:31,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:55:31,788 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 08:55:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:55:47,652 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-27 08:55:47,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:55:47,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-27 08:55:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:55:47,716 INFO L225 Difference]: With dead ends: 4999 [2018-10-27 08:55:47,716 INFO L226 Difference]: Without dead ends: 3219 [2018-10-27 08:55:47,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:55:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-27 08:55:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-27 08:55:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 08:55:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-27 08:55:47,953 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 57 [2018-10-27 08:55:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:55:47,954 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-27 08:55:47,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:55:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-27 08:55:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 08:55:47,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:55:47,975 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:55:47,975 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:55:47,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:55:47,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1018737494, now seen corresponding path program 1 times [2018-10-27 08:55:47,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:55:47,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:47,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:55:47,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:47,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:55:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:55:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:55:48,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:55:48,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:55:48,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:55:48,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:55:48,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:55:48,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:55:48,294 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-27 08:56:17,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:56:17,959 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-10-27 08:56:17,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:56:17,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-27 08:56:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:56:17,998 INFO L225 Difference]: With dead ends: 9331 [2018-10-27 08:56:17,999 INFO L226 Difference]: Without dead ends: 6122 [2018-10-27 08:56:18,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:56:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-10-27 08:56:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-10-27 08:56:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-10-27 08:56:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-10-27 08:56:18,171 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 129 [2018-10-27 08:56:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:56:18,171 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-10-27 08:56:18,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:56:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-10-27 08:56:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 08:56:18,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:56:18,176 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:56:18,177 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:56:18,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:56:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash -65738260, now seen corresponding path program 1 times [2018-10-27 08:56:18,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:56:18,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:56:18,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:56:18,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:56:18,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:56:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:56:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:56:18,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:56:18,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:56:18,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:56:18,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:56:18,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:56:18,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:56:18,458 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-10-27 08:57:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:57:06,860 INFO L93 Difference]: Finished difference Result 24241 states and 39700 transitions. [2018-10-27 08:57:06,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:57:06,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-27 08:57:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:57:06,955 INFO L225 Difference]: With dead ends: 24241 [2018-10-27 08:57:06,956 INFO L226 Difference]: Without dead ends: 18163 [2018-10-27 08:57:06,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:57:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18163 states. [2018-10-27 08:57:07,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18163 to 18089. [2018-10-27 08:57:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18089 states. [2018-10-27 08:57:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18089 states to 18089 states and 25630 transitions. [2018-10-27 08:57:07,491 INFO L78 Accepts]: Start accepts. Automaton has 18089 states and 25630 transitions. Word has length 147 [2018-10-27 08:57:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:57:07,492 INFO L481 AbstractCegarLoop]: Abstraction has 18089 states and 25630 transitions. [2018-10-27 08:57:07,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:57:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 18089 states and 25630 transitions. [2018-10-27 08:57:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-27 08:57:07,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:57:07,499 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:57:07,500 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:57:07,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:57:07,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1608287919, now seen corresponding path program 1 times [2018-10-27 08:57:07,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:57:07,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:57:07,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:57:07,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:57:07,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:57:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:57:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:57:07,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:57:07,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:57:07,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:57:07,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:57:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:57:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:57:07,922 INFO L87 Difference]: Start difference. First operand 18089 states and 25630 transitions. Second operand 5 states. [2018-10-27 08:57:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:57:36,257 INFO L93 Difference]: Finished difference Result 56344 states and 85034 transitions. [2018-10-27 08:57:36,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:57:36,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-10-27 08:57:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:57:36,446 INFO L225 Difference]: With dead ends: 56344 [2018-10-27 08:57:36,447 INFO L226 Difference]: Without dead ends: 38261 [2018-10-27 08:57:36,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:57:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38261 states. [2018-10-27 08:57:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38261 to 37187. [2018-10-27 08:57:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37187 states. [2018-10-27 08:57:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 50452 transitions. [2018-10-27 08:57:37,588 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 50452 transitions. Word has length 192 [2018-10-27 08:57:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:57:37,589 INFO L481 AbstractCegarLoop]: Abstraction has 37187 states and 50452 transitions. [2018-10-27 08:57:37,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:57:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 50452 transitions. [2018-10-27 08:57:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-27 08:57:37,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:57:37,599 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:57:37,599 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:57:37,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:57:37,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1511439822, now seen corresponding path program 1 times [2018-10-27 08:57:37,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:57:37,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:57:37,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:57:37,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:57:37,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:57:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:57:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:57:38,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:57:38,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:57:38,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-27 08:57:38,114 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5582], [5584], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 08:57:38,162 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:57:38,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:57:38,643 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:57:38,645 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 08:57:38,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:57:38,686 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:57:39,208 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 75.76% of their original sizes. [2018-10-27 08:57:39,209 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:57:39,445 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-10-27 08:57:39,445 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:57:39,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:57:39,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:57:39,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:57:39,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:57:39,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:57:39,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:57:39,448 INFO L87 Difference]: Start difference. First operand 37187 states and 50452 transitions. Second operand 6 states. Received shutdown request... [2018-10-27 08:58:59,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:58:59,108 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:58:59,114 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:58:59,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:58:59 BoogieIcfgContainer [2018-10-27 08:58:59,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:58:59,115 INFO L168 Benchmark]: Toolchain (without parser) took 232192.13 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,116 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:58:59,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4019.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.3 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 771.08 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.5 MB). Free memory was 995.3 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,118 INFO L168 Benchmark]: Boogie Preprocessor took 438.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,119 INFO L168 Benchmark]: RCFGBuilder took 18793.91 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.1 MB). Peak memory consumption was 676.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,120 INFO L168 Benchmark]: TraceAbstraction took 208163.83 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 437.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:58:59,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4019.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.3 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 771.08 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.5 MB). Free memory was 995.3 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 438.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18793.91 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.1 MB). Peak memory consumption was 676.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208163.83 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 437.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (37187states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (19864 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 202.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2859 SDtfs, 22365 SDslu, 3111 SDs, 0 SdLazy, 40426 SolverSat, 10297 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 168.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37187occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9975608651942879 AbsIntWeakeningRatio, 0.12796208530805686 AbsIntAvgWeakeningVarsNumRemoved, 17.341232227488153 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 1190 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 737 NumberOfCodeBlocks, 737 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 732 ConstructedInterpolants, 0 QuantifiedInterpolants, 477970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 255/323 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown