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_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:16:01,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:16:01,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:16:01,785 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:16:01,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:16:01,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:16:01,791 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:16:01,794 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:16:01,796 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:16:01,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:16:01,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:16:01,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:16:01,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:16:01,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:16:01,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:16:01,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:16:01,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:16:01,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:16:01,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:16:01,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:16:01,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:16:01,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:16:01,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 02:16:01,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 02:16:01,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 02:16:01,833 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 02:16:01,835 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 02:16:01,836 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 02:16:01,836 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 02:16:01,840 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 02:16:01,840 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 02:16:01,842 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 02:16:01,842 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 02:16:01,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 02:16:01,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 02:16:01,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 02:16:01,846 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 [2018-10-25 02:16:01,878 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:16:01,878 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:16:01,879 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:16:01,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:16:01,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:16:01,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:16:01,880 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:16:01,880 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:16:01,881 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:16:01,881 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:16:01,882 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:16:01,882 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:16:01,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:16:01,882 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:16:01,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:16:01,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:16:01,884 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:16:01,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:16:01,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:16:01,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:16:01,884 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:16:01,886 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:16:01,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:16:01,887 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:16:01,887 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:16:01,887 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:16:01,887 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:16:01,888 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:16:01,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:16:01,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:16:01,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:16:01,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:16:01,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:16:01,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:16:01,889 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:16:01,889 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:16:01,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:16:01,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:16:01,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:16:01,966 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:16:01,966 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:16:01,967 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-10-25 02:16:02,025 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bd88e10b/42a4beae89334d878302d717298aa2a2/FLAG9837a043a [2018-10-25 02:16:02,885 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:16:02,885 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-10-25 02:16:02,940 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bd88e10b/42a4beae89334d878302d717298aa2a2/FLAG9837a043a [2018-10-25 02:16:02,960 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bd88e10b/42a4beae89334d878302d717298aa2a2 [2018-10-25 02:16:02,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:16:02,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:16:02,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:16:02,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:16:02,982 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:16:02,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:16:02" (1/1) ... [2018-10-25 02:16:02,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb829fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:02, skipping insertion in model container [2018-10-25 02:16:02,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:16:02" (1/1) ... [2018-10-25 02:16:03,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:16:03,269 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:16:05,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:16:05,178 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:16:06,332 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:16:06,384 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:16:06,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06 WrapperNode [2018-10-25 02:16:06,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:16:06,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:16:06,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:16:06,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:16:06,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:06,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:16:07,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:16:07,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:16:07,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:16:07,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (1/1) ... [2018-10-25 02:16:07,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:16:07,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:16:07,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:16:07,672 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:16:07,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (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 [2018-10-25 02:16:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:16:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:16:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:16:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:16:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:16:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:16:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:16:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:16:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:16:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:16:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:16:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:16:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:16:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:16:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:16:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:16:07,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:16:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:16:26,715 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:16:26,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:16:26 BoogieIcfgContainer [2018-10-25 02:16:26,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:16:26,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:16:26,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:16:26,721 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:16:26,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:16:02" (1/3) ... [2018-10-25 02:16:26,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:16:26, skipping insertion in model container [2018-10-25 02:16:26,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:06" (2/3) ... [2018-10-25 02:16:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:16:26, skipping insertion in model container [2018-10-25 02:16:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:16:26" (3/3) ... [2018-10-25 02:16:26,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label45_true-unreach-call.c [2018-10-25 02:16:26,736 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:16:26,748 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:16:26,768 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:16:26,835 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:16:26,836 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:16:26,836 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:16:26,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:16:26,836 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:16:26,836 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:16:26,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:16:26,837 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:16:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:16:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-25 02:16:26,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:16:26,909 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] [2018-10-25 02:16:26,911 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:16:26,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:16:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1607603996, now seen corresponding path program 1 times [2018-10-25 02:16:26,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:16:26,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:16:26,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:16:26,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:16:26,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:16:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:16:27,513 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-25 02:16:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:16:27,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:16:27,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:16:27,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:16:27,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:16:27,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:16:27,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:16:27,646 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-25 02:16:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:16:53,071 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-25 02:16:53,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:16:53,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-25 02:16:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:16:53,139 INFO L225 Difference]: With dead ends: 6465 [2018-10-25 02:16:53,139 INFO L226 Difference]: Without dead ends: 4681 [2018-10-25 02:16:53,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:16:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-25 02:16:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-25 02:16:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-25 02:16:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-25 02:16:53,381 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 54 [2018-10-25 02:16:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:16:53,382 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-25 02:16:53,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:16:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-25 02:16:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-25 02:16:53,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:16:53,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:16:53,400 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:16:53,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:16:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1301823847, now seen corresponding path program 1 times [2018-10-25 02:16:53,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:16:53,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:16:53,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:16:53,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:16:53,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:16:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:16:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:16:53,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:16:53,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:16:53,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:16:53,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:16:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:16:53,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:16:53,951 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-25 02:16:56,224 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-25 02:17:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:17:27,646 INFO L93 Difference]: Finished difference Result 12112 states and 19739 transitions. [2018-10-25 02:17:27,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:17:27,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-25 02:17:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:17:27,694 INFO L225 Difference]: With dead ends: 12112 [2018-10-25 02:17:27,694 INFO L226 Difference]: Without dead ends: 8918 [2018-10-25 02:17:27,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:17:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2018-10-25 02:17:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 8861. [2018-10-25 02:17:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8861 states. [2018-10-25 02:17:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 12725 transitions. [2018-10-25 02:17:27,920 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 12725 transitions. Word has length 126 [2018-10-25 02:17:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:17:27,920 INFO L481 AbstractCegarLoop]: Abstraction has 8861 states and 12725 transitions. [2018-10-25 02:17:27,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:17:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 12725 transitions. [2018-10-25 02:17:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-25 02:17:27,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:27,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:17:27,926 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:27,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:27,926 INFO L82 PathProgramCache]: Analyzing trace with hash -13978768, now seen corresponding path program 1 times [2018-10-25 02:17:27,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:27,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:27,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:27,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:27,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:17:28,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:28,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:17:28,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:28,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:17:28,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:17:28,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:17:28,144 INFO L87 Difference]: Start difference. First operand 8861 states and 12725 transitions. Second operand 6 states. [2018-10-25 02:17:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:17:53,057 INFO L93 Difference]: Finished difference Result 29461 states and 43470 transitions. [2018-10-25 02:17:53,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:17:53,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-25 02:17:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:17:53,165 INFO L225 Difference]: With dead ends: 29461 [2018-10-25 02:17:53,165 INFO L226 Difference]: Without dead ends: 20606 [2018-10-25 02:17:53,203 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 [2018-10-25 02:17:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20606 states. [2018-10-25 02:17:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20606 to 20450. [2018-10-25 02:17:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20450 states. [2018-10-25 02:17:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20450 states to 20450 states and 28694 transitions. [2018-10-25 02:17:53,690 INFO L78 Accepts]: Start accepts. Automaton has 20450 states and 28694 transitions. Word has length 128 [2018-10-25 02:17:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:17:53,691 INFO L481 AbstractCegarLoop]: Abstraction has 20450 states and 28694 transitions. [2018-10-25 02:17:53,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:17:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20450 states and 28694 transitions. [2018-10-25 02:17:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-25 02:17:53,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:53,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:17:53,701 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:53,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 721795799, now seen corresponding path program 1 times [2018-10-25 02:17:53,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:53,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:53,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:53,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:53,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:17:54,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:54,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:17:54,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:54,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:17:54,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:17:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:17:54,243 INFO L87 Difference]: Start difference. First operand 20450 states and 28694 transitions. Second operand 6 states. [2018-10-25 02:18:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:19,060 INFO L93 Difference]: Finished difference Result 62307 states and 89813 transitions. [2018-10-25 02:18:19,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 02:18:19,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-25 02:18:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:19,215 INFO L225 Difference]: With dead ends: 62307 [2018-10-25 02:18:19,215 INFO L226 Difference]: Without dead ends: 41863 [2018-10-25 02:18:19,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:18:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41863 states. [2018-10-25 02:18:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41863 to 41526. [2018-10-25 02:18:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41526 states. [2018-10-25 02:18:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41526 states to 41526 states and 57822 transitions. [2018-10-25 02:18:20,519 INFO L78 Accepts]: Start accepts. Automaton has 41526 states and 57822 transitions. Word has length 136 [2018-10-25 02:18:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:20,520 INFO L481 AbstractCegarLoop]: Abstraction has 41526 states and 57822 transitions. [2018-10-25 02:18:20,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:18:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 41526 states and 57822 transitions. [2018-10-25 02:18:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-25 02:18:20,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:20,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:20,524 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:20,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash -179031743, now seen corresponding path program 1 times [2018-10-25 02:18:20,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:20,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:20,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:20,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:20,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:20,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:20,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:18:20,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:20,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:18:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:18:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:18:20,892 INFO L87 Difference]: Start difference. First operand 41526 states and 57822 transitions. Second operand 5 states. [2018-10-25 02:18:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:54,276 INFO L93 Difference]: Finished difference Result 125927 states and 180693 transitions. [2018-10-25 02:18:54,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:18:54,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2018-10-25 02:18:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:54,550 INFO L225 Difference]: With dead ends: 125927 [2018-10-25 02:18:54,550 INFO L226 Difference]: Without dead ends: 84407 [2018-10-25 02:18:54,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:18:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84407 states. [2018-10-25 02:18:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84407 to 83213. [2018-10-25 02:18:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83213 states. [2018-10-25 02:18:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83213 states to 83213 states and 107339 transitions. [2018-10-25 02:18:56,057 INFO L78 Accepts]: Start accepts. Automaton has 83213 states and 107339 transitions. Word has length 156 [2018-10-25 02:18:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:56,058 INFO L481 AbstractCegarLoop]: Abstraction has 83213 states and 107339 transitions. [2018-10-25 02:18:56,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:18:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 83213 states and 107339 transitions. [2018-10-25 02:18:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-25 02:18:56,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:56,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:56,064 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:56,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:56,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1693657294, now seen corresponding path program 1 times [2018-10-25 02:18:56,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:56,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:56,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:56,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:56,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:56,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:56,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:18:56,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:56,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:18:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:18:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:18:56,348 INFO L87 Difference]: Start difference. First operand 83213 states and 107339 transitions. Second operand 6 states. [2018-10-25 02:19:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:19:15,222 INFO L93 Difference]: Finished difference Result 189611 states and 255218 transitions. [2018-10-25 02:19:15,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:19:15,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-10-25 02:19:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:19:16,377 INFO L225 Difference]: With dead ends: 189611 [2018-10-25 02:19:16,377 INFO L226 Difference]: Without dead ends: 106404 [2018-10-25 02:19:16,477 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 [2018-10-25 02:19:16,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106404 states. [2018-10-25 02:19:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106404 to 105641. [2018-10-25 02:19:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105641 states. [2018-10-25 02:19:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105641 states to 105641 states and 136642 transitions. [2018-10-25 02:19:18,216 INFO L78 Accepts]: Start accepts. Automaton has 105641 states and 136642 transitions. Word has length 219 [2018-10-25 02:19:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:19:18,217 INFO L481 AbstractCegarLoop]: Abstraction has 105641 states and 136642 transitions. [2018-10-25 02:19:18,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:19:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 105641 states and 136642 transitions. [2018-10-25 02:19:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-10-25 02:19:18,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:19:18,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:19:18,244 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:19:18,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2000312291, now seen corresponding path program 1 times [2018-10-25 02:19:18,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:19:18,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:18,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:19:18,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:18,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:19:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:19:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:19:18,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:19:18,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:19:18,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:19:18,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:19:18,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:19:18,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:19:18,891 INFO L87 Difference]: Start difference. First operand 105641 states and 136642 transitions. Second operand 4 states. [2018-10-25 02:19:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:19:45,884 INFO L93 Difference]: Finished difference Result 302113 states and 409967 transitions. [2018-10-25 02:19:45,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:19:45,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 541 [2018-10-25 02:19:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:19:46,451 INFO L225 Difference]: With dead ends: 302113 [2018-10-25 02:19:46,451 INFO L226 Difference]: Without dead ends: 196478 [2018-10-25 02:19:46,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:19:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196478 states. [2018-10-25 02:19:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196478 to 196174. [2018-10-25 02:19:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196174 states. [2018-10-25 02:19:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196174 states to 196174 states and 256350 transitions. [2018-10-25 02:19:50,508 INFO L78 Accepts]: Start accepts. Automaton has 196174 states and 256350 transitions. Word has length 541 [2018-10-25 02:19:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:19:50,509 INFO L481 AbstractCegarLoop]: Abstraction has 196174 states and 256350 transitions. [2018-10-25 02:19:50,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:19:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 196174 states and 256350 transitions. [2018-10-25 02:19:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-10-25 02:19:50,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:19:50,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:19:50,538 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:19:50,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1092730453, now seen corresponding path program 1 times [2018-10-25 02:19:50,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:19:50,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:50,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:19:50,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:50,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:19:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:19:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:19:51,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:19:51,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:19:51,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:19:51,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:19:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:19:51,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:19:51,300 INFO L87 Difference]: Start difference. First operand 196174 states and 256350 transitions. Second operand 4 states. Received shutdown request... [2018-10-25 02:19:59,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:19:59,860 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:19:59,866 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:19:59,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:19:59 BoogieIcfgContainer [2018-10-25 02:19:59,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:19:59,867 INFO L168 Benchmark]: Toolchain (without parser) took 236893.21 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -207.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,868 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:19:59,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3406.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.7 MB in the end (delta: 383.2 MB). Peak memory consumption was 383.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 754.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 990.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,871 INFO L168 Benchmark]: Boogie Preprocessor took 530.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,873 INFO L168 Benchmark]: RCFGBuilder took 19043.97 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.9 MB). Peak memory consumption was 669.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,874 INFO L168 Benchmark]: TraceAbstraction took 213149.21 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 695.2 MB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 110.7 MB). Peak memory consumption was 805.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:19:59,879 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3406.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.7 MB in the end (delta: 383.2 MB). Peak memory consumption was 383.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 754.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 990.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 530.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19043.97 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.9 MB). Peak memory consumption was 669.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213149.21 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 695.2 MB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 110.7 MB). Peak memory consumption was 805.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was constructing difference of abstraction (196174states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (81745 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 199.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6952 SDtfs, 45038 SDslu, 5396 SDs, 0 SdLazy, 74780 SolverSat, 19366 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 169.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196174occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2008 NumberOfCodeBlocks, 2008 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2000 ConstructedInterpolants, 0 QuantifiedInterpolants, 1429224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 329/329 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown