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/Problem03_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:15:12,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:15:12,035 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:15:12,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:15:12,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:15:12,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:15:12,055 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:15:12,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:15:12,060 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:15:12,061 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:15:12,062 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:15:12,062 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:15:12,063 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:15:12,064 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:15:12,065 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:15:12,066 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:15:12,067 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:15:12,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:15:12,071 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:15:12,072 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:15:12,073 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:15:12,074 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:15:12,077 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:15:12,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:15:12,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:15:12,078 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:15:12,080 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:15:12,081 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:15:12,081 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:15:12,083 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:15:12,083 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:15:12,084 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:15:12,084 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:15:12,084 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:15:12,085 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:15:12,086 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:15:12,086 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 06:15:12,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:15:12,111 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:15:12,113 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:15:12,113 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:15:12,113 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:15:12,113 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:15:12,113 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:15:12,114 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:15:12,115 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:15:12,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:15:12,116 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:15:12,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:15:12,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:15:12,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:15:12,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:15:12,118 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:15:12,118 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:15:12,118 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:15:12,118 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:15:12,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:15:12,119 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:15:12,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:15:12,119 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:15:12,119 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:15:12,119 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:15:12,120 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:15:12,120 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:15:12,120 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:15:12,120 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:15:12,121 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:15:12,121 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:15:12,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:15:12,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:15:12,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:15:12,210 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:15:12,210 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:15:12,211 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-27 06:15:12,270 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df6b2f21e/b4d238563d6b4cf9aac22373840709cb/FLAGbbbc69e1e [2018-10-27 06:15:12,918 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:15:12,920 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-27 06:15:12,943 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df6b2f21e/b4d238563d6b4cf9aac22373840709cb/FLAGbbbc69e1e [2018-10-27 06:15:12,960 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df6b2f21e/b4d238563d6b4cf9aac22373840709cb [2018-10-27 06:15:12,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:15:12,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:15:12,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:15:12,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:15:12,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:15:12,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:15:12" (1/1) ... [2018-10-27 06:15:12,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a802b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:12, skipping insertion in model container [2018-10-27 06:15:12,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:15:12" (1/1) ... [2018-10-27 06:15:12,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:15:13,101 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:15:13,949 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:15:13,955 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:15:14,189 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:15:14,214 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:15:14,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14 WrapperNode [2018-10-27 06:15:14,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:15:14,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:15:14,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:15:14,216 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:15:14,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:15:14,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:15:14,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:15:14,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:15:14,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (1/1) ... [2018-10-27 06:15:14,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:15:14,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:15:14,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:15:14,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:15:14,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (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 06:15:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:15:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:15:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:15:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:15:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:15:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:15:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:15:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:15:20,636 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:15:20,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:20 BoogieIcfgContainer [2018-10-27 06:15:20,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:15:20,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:15:20,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:15:20,647 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:15:20,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:15:12" (1/3) ... [2018-10-27 06:15:20,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d96f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:20, skipping insertion in model container [2018-10-27 06:15:20,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:14" (2/3) ... [2018-10-27 06:15:20,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d96f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:20, skipping insertion in model container [2018-10-27 06:15:20,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:20" (3/3) ... [2018-10-27 06:15:20,652 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label06_true-unreach-call.c [2018-10-27 06:15:20,663 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:15:20,675 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:15:20,695 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:15:20,748 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:15:20,748 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:15:20,748 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:15:20,748 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:15:20,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:15:20,749 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:15:20,749 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:15:20,749 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:15:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:15:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 06:15:20,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:20,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:20,828 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:20,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:20,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1227747913, now seen corresponding path program 1 times [2018-10-27 06:15:20,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:20,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:20,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:20,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:20,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:21,784 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:15:21,970 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 06:15:21,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:21,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:15:21,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:21,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:15:21,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:15:21,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:15:22,001 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 06:15:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:24,194 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-27 06:15:24,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:15:24,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-10-27 06:15:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:24,226 INFO L225 Difference]: With dead ends: 848 [2018-10-27 06:15:24,226 INFO L226 Difference]: Without dead ends: 534 [2018-10-27 06:15:24,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:15:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-27 06:15:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-27 06:15:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-27 06:15:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-27 06:15:24,327 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 176 [2018-10-27 06:15:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:24,329 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-27 06:15:24,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:15:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-27 06:15:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 06:15:24,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:24,337 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 06:15:24,338 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:24,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash -602299443, now seen corresponding path program 1 times [2018-10-27 06:15:24,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:24,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:24,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:24,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:24,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:24,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:24,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:15:24,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:24,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:15:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:15:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:15:24,799 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-27 06:15:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:26,724 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-10-27 06:15:26,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:15:26,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-10-27 06:15:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:26,732 INFO L225 Difference]: With dead ends: 1493 [2018-10-27 06:15:26,733 INFO L226 Difference]: Without dead ends: 967 [2018-10-27 06:15:26,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:15:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-27 06:15:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-10-27 06:15:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-10-27 06:15:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-10-27 06:15:26,782 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 189 [2018-10-27 06:15:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:26,783 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-10-27 06:15:26,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:15:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-10-27 06:15:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-27 06:15:26,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:26,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:26,791 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:26,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1117769588, now seen corresponding path program 1 times [2018-10-27 06:15:26,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:26,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:26,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:26,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:26,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:27,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:27,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:15:27,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:27,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:15:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:15:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:15:27,071 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-10-27 06:15:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:30,645 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-10-27 06:15:30,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:15:30,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-27 06:15:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:30,660 INFO L225 Difference]: With dead ends: 2784 [2018-10-27 06:15:30,660 INFO L226 Difference]: Without dead ends: 1839 [2018-10-27 06:15:30,665 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 06:15:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-10-27 06:15:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-10-27 06:15:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-10-27 06:15:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-10-27 06:15:30,741 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 204 [2018-10-27 06:15:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:30,741 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-10-27 06:15:30,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:15:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-10-27 06:15:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 06:15:30,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:30,751 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:30,751 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:30,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash -356667913, now seen corresponding path program 1 times [2018-10-27 06:15:30,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:30,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:30,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:30,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:30,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:31,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:15:31,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:15:31,222 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 06:15:31,224 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:15:31,295 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:15:31,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:15:33,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:15:33,230 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:15:33,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:33,273 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:15:34,453 INFO L227 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 72.61% of their original sizes. [2018-10-27 06:15:34,453 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:15:35,601 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 06:15:35,602 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:15:35,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:15:35,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-27 06:15:35,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:35,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 06:15:35,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 06:15:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-27 06:15:35,606 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 20 states. [2018-10-27 06:16:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:05,620 INFO L93 Difference]: Finished difference Result 4034 states and 6121 transitions. [2018-10-27 06:16:05,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:16:05,620 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 223 [2018-10-27 06:16:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:05,632 INFO L225 Difference]: With dead ends: 4034 [2018-10-27 06:16:05,633 INFO L226 Difference]: Without dead ends: 2231 [2018-10-27 06:16:05,639 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:16:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2018-10-27 06:16:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2228. [2018-10-27 06:16:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2018-10-27 06:16:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3229 transitions. [2018-10-27 06:16:05,708 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3229 transitions. Word has length 223 [2018-10-27 06:16:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:05,709 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 3229 transitions. [2018-10-27 06:16:05,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 06:16:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3229 transitions. [2018-10-27 06:16:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 06:16:05,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:05,719 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 06:16:05,719 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:05,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1245431112, now seen corresponding path program 1 times [2018-10-27 06:16:05,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:05,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:05,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:05,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:05,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:06,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:06,238 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:06,238 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 06:16:06,239 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:06,262 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:06,262 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:07,379 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:16:07,379 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:16:07,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:07,389 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:16:08,101 INFO L227 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 74.76% of their original sizes. [2018-10-27 06:16:08,102 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:16:08,372 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 06:16:08,373 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:16:08,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:16:08,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-27 06:16:08,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:16:08,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 06:16:08,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 06:16:08,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:16:08,375 INFO L87 Difference]: Start difference. First operand 2228 states and 3229 transitions. Second operand 15 states. [2018-10-27 06:16:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:50,748 INFO L93 Difference]: Finished difference Result 5311 states and 7950 transitions. [2018-10-27 06:16:50,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:16:50,748 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2018-10-27 06:16:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:50,764 INFO L225 Difference]: With dead ends: 5311 [2018-10-27 06:16:50,764 INFO L226 Difference]: Without dead ends: 3508 [2018-10-27 06:16:50,771 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-10-27 06:16:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2018-10-27 06:16:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3501. [2018-10-27 06:16:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2018-10-27 06:16:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4910 transitions. [2018-10-27 06:16:50,857 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4910 transitions. Word has length 223 [2018-10-27 06:16:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:50,858 INFO L481 AbstractCegarLoop]: Abstraction has 3501 states and 4910 transitions. [2018-10-27 06:16:50,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 06:16:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4910 transitions. [2018-10-27 06:16:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 06:16:50,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:50,868 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:50,869 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:50,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:50,869 INFO L82 PathProgramCache]: Analyzing trace with hash -297463297, now seen corresponding path program 1 times [2018-10-27 06:16:50,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:50,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:50,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:50,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:50,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:16:51,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:16:51,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:16:51,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:16:51,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:16:51,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:16:51,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:16:51,410 INFO L87 Difference]: Start difference. First operand 3501 states and 4910 transitions. Second operand 3 states. [2018-10-27 06:16:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:52,597 INFO L93 Difference]: Finished difference Result 9120 states and 13652 transitions. [2018-10-27 06:16:52,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:16:52,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-10-27 06:16:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:52,625 INFO L225 Difference]: With dead ends: 9120 [2018-10-27 06:16:52,625 INFO L226 Difference]: Without dead ends: 6044 [2018-10-27 06:16:52,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:16:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2018-10-27 06:16:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 6037. [2018-10-27 06:16:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6037 states. [2018-10-27 06:16:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 8571 transitions. [2018-10-27 06:16:52,791 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 8571 transitions. Word has length 224 [2018-10-27 06:16:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:52,792 INFO L481 AbstractCegarLoop]: Abstraction has 6037 states and 8571 transitions. [2018-10-27 06:16:52,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:16:52,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 8571 transitions. [2018-10-27 06:16:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-27 06:16:52,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:52,813 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:52,814 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:52,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash -595480447, now seen corresponding path program 1 times [2018-10-27 06:16:52,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:52,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:52,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:52,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:52,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:16:53,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:53,243 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:53,243 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-27 06:16:53,243 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:53,259 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:53,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:54,180 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:54,181 INFO L272 AbstractInterpreter]: Visited 182 different actions 543 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:16:54,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:54,186 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:54,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:54,186 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:54,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:54,195 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:54,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 06:16:54,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 06:16:55,177 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:16:55,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-27 06:16:55,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:16:55,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:16:55,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:16:55,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:16:55,179 INFO L87 Difference]: Start difference. First operand 6037 states and 8571 transitions. Second operand 3 states. [2018-10-27 06:16:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:57,897 INFO L93 Difference]: Finished difference Result 11230 states and 16312 transitions. [2018-10-27 06:16:57,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:16:57,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2018-10-27 06:16:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:57,923 INFO L225 Difference]: With dead ends: 11230 [2018-10-27 06:16:57,923 INFO L226 Difference]: Without dead ends: 6039 [2018-10-27 06:16:57,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:16:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2018-10-27 06:16:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6037. [2018-10-27 06:16:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6037 states. [2018-10-27 06:16:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 8052 transitions. [2018-10-27 06:16:58,087 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 8052 transitions. Word has length 249 [2018-10-27 06:16:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:58,088 INFO L481 AbstractCegarLoop]: Abstraction has 6037 states and 8052 transitions. [2018-10-27 06:16:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:16:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 8052 transitions. [2018-10-27 06:16:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-27 06:16:58,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:58,108 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-27 06:16:58,108 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:58,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1821939352, now seen corresponding path program 1 times [2018-10-27 06:16:58,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:58,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:58,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:58,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:58,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:58,438 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:16:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 84 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 06:16:58,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:58,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:58,804 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-27 06:16:58,805 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:58,811 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:58,811 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:17:00,316 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:17:00,317 INFO L272 AbstractInterpreter]: Visited 183 different actions 547 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:17:00,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:00,320 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:17:00,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:17:00,321 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:17:00,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:17:00,502 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:17:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:17:00,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:17:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 06:17:00,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:17:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-27 06:17:01,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:17:01,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:17:01,214 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:17:01,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:17:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:17:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:17:01,216 INFO L87 Difference]: Start difference. First operand 6037 states and 8052 transitions. Second operand 12 states. [2018-10-27 06:17:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:17:06,838 INFO L93 Difference]: Finished difference Result 18884 states and 27182 transitions. [2018-10-27 06:17:06,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 06:17:06,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 263 [2018-10-27 06:17:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:17:06,900 INFO L225 Difference]: With dead ends: 18884 [2018-10-27 06:17:06,900 INFO L226 Difference]: Without dead ends: 13274 [2018-10-27 06:17:06,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:17:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13274 states. [2018-10-27 06:17:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13274 to 13270. [2018-10-27 06:17:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13270 states. [2018-10-27 06:17:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 18152 transitions. [2018-10-27 06:17:07,312 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 18152 transitions. Word has length 263 [2018-10-27 06:17:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:17:07,313 INFO L481 AbstractCegarLoop]: Abstraction has 13270 states and 18152 transitions. [2018-10-27 06:17:07,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:17:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 18152 transitions. [2018-10-27 06:17:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-27 06:17:07,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:17:07,379 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:17:07,379 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:17:07,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash -759076715, now seen corresponding path program 1 times [2018-10-27 06:17:07,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:17:07,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:07,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:17:07,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:07,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:17:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:17:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:17:07,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:17:07,927 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:17:07,927 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-10-27 06:17:07,928 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:17:07,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:17:07,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:17:09,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:17:09,408 INFO L272 AbstractInterpreter]: Visited 183 different actions 547 times. Merged at 8 different actions 24 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:17:09,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:09,444 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:17:10,826 INFO L227 lantSequenceWeakener]: Weakened 313 states. On average, predicates are now at 74.23% of their original sizes. [2018-10-27 06:17:10,830 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:17:11,765 INFO L415 sIntCurrentIteration]: We unified 315 AI predicates to 315 [2018-10-27 06:17:11,765 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:17:11,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:17:11,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 28 [2018-10-27 06:17:11,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:17:11,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-27 06:17:11,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-27 06:17:11,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-10-27 06:17:11,767 INFO L87 Difference]: Start difference. First operand 13270 states and 18152 transitions. Second operand 25 states. [2018-10-27 06:18:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:29,680 INFO L93 Difference]: Finished difference Result 49713 states and 71127 transitions. [2018-10-27 06:18:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-27 06:18:29,681 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 316 [2018-10-27 06:18:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:29,848 INFO L225 Difference]: With dead ends: 49713 [2018-10-27 06:18:29,848 INFO L226 Difference]: Without dead ends: 36870 [2018-10-27 06:18:29,906 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=538, Invalid=2432, Unknown=0, NotChecked=0, Total=2970 [2018-10-27 06:18:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36870 states. [2018-10-27 06:18:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36870 to 36798. [2018-10-27 06:18:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36798 states. [2018-10-27 06:18:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36798 states to 36798 states and 49259 transitions. [2018-10-27 06:18:30,791 INFO L78 Accepts]: Start accepts. Automaton has 36798 states and 49259 transitions. Word has length 316 [2018-10-27 06:18:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:30,791 INFO L481 AbstractCegarLoop]: Abstraction has 36798 states and 49259 transitions. [2018-10-27 06:18:30,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-27 06:18:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 36798 states and 49259 transitions. [2018-10-27 06:18:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-27 06:18:30,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:30,874 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:30,874 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:30,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1491452514, now seen corresponding path program 1 times [2018-10-27 06:18:30,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:30,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:30,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:30,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:30,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:31,473 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:18:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 58 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-27 06:18:31,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:31,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:18:31,745 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-27 06:18:31,746 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:18:31,752 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:18:31,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:18:33,259 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:18:33,259 INFO L272 AbstractInterpreter]: Visited 183 different actions 732 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 06:18:33,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:33,273 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:18:33,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:33,273 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:18:33,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:33,283 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:18:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:33,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:18:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-27 06:18:34,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:18:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-27 06:18:34,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:18:34,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:18:34,990 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:18:34,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:18:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:18:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:18:34,991 INFO L87 Difference]: Start difference. First operand 36798 states and 49259 transitions. Second operand 9 states. [2018-10-27 06:18:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:43,512 INFO L93 Difference]: Finished difference Result 133579 states and 185200 transitions. [2018-10-27 06:18:43,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-27 06:18:43,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-10-27 06:18:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:43,935 INFO L225 Difference]: With dead ends: 133579 [2018-10-27 06:18:43,935 INFO L226 Difference]: Without dead ends: 97207 [2018-10-27 06:18:44,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:18:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97207 states. [2018-10-27 06:18:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97207 to 96204. [2018-10-27 06:18:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96204 states. [2018-10-27 06:18:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96204 states to 96204 states and 123524 transitions. [2018-10-27 06:18:46,254 INFO L78 Accepts]: Start accepts. Automaton has 96204 states and 123524 transitions. Word has length 339 [2018-10-27 06:18:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:46,255 INFO L481 AbstractCegarLoop]: Abstraction has 96204 states and 123524 transitions. [2018-10-27 06:18:46,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:18:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 96204 states and 123524 transitions. [2018-10-27 06:18:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-27 06:18:46,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:46,368 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:18:46,368 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:46,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:46,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1662360738, now seen corresponding path program 1 times [2018-10-27 06:18:46,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:46,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:46,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:46,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:46,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 290 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:18:47,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:47,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:18:47,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-10-27 06:18:47,755 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [616], [619], [623], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:18:47,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:18:47,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:18:48,676 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:18:48,676 INFO L272 AbstractInterpreter]: Visited 183 different actions 548 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:18:48,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:48,686 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:18:48,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:48,686 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:18:48,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:48,694 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:18:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:48,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:18:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 06:18:49,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:18:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 06:18:50,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:18:50,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2018-10-27 06:18:50,210 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:18:50,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 06:18:50,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 06:18:50,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:18:50,211 INFO L87 Difference]: Start difference. First operand 96204 states and 123524 transitions. Second operand 14 states. [2018-10-27 06:19:01,524 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 Received shutdown request... [2018-10-27 06:19:02,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-27 06:19:02,100 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:19:02,105 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:19:02,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:19:02 BoogieIcfgContainer [2018-10-27 06:19:02,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:19:02,106 INFO L168 Benchmark]: Toolchain (without parser) took 229134.70 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,107 INFO L168 Benchmark]: CDTParser took 0.19 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 06:19:02,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1240.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,110 INFO L168 Benchmark]: Boogie Preprocessor took 147.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,110 INFO L168 Benchmark]: RCFGBuilder took 5958.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 268.0 MB). Peak memory consumption was 268.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,111 INFO L168 Benchmark]: TraceAbstraction took 221463.85 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 789.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 06:19:02,117 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1240.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5958.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 268.0 MB). Peak memory consumption was 268.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221463.85 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 789.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1542]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1542). Cancelled while BasicCegarLoop was constructing difference of abstraction (96204states) and FLOYD_HOARE automaton (currently 110 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (38228 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 221.3s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 189.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2713 SDtfs, 22482 SDslu, 5452 SDs, 0 SdLazy, 36419 SolverSat, 7039 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3642 GetRequests, 3313 SyntacticMatches, 11 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7783 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96204occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9988989084817878 AbsIntWeakeningRatio, 0.26613965744400525 AbsIntAvgWeakeningVarsNumRemoved, 55.15415019762846 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 1146 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 4043 NumberOfCodeBlocks, 4043 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5268 ConstructedInterpolants, 0 QuantifiedInterpolants, 3305548 SizeOfPredicates, 3 NumberOfNonLiveVariables, 5593 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 2845/3042 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown