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_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:17:25,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:17:25,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:17:25,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:17:25,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:17:25,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:17:25,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:17:25,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:17:25,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:17:25,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:17:25,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:17:25,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:17:25,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:17:25,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:17:25,132 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:17:25,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:17:25,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:17:25,136 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:17:25,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:17:25,142 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:17:25,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:17:25,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:17:25,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:17:25,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:17:25,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:17:25,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:17:25,158 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:17:25,159 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:17:25,160 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:17:25,161 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:17:25,164 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:17:25,165 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 00:17:25,165 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 00:17:25,165 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 00:17:25,166 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 00:17:25,168 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 00:17:25,169 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:17:25,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:17:25,197 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:17:25,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:17:25,198 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:17:25,199 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:17:25,199 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:17:25,199 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:17:25,199 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:17:25,199 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:17:25,200 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:17:25,200 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:17:25,200 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:17:25,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:17:25,200 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:17:25,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:17:25,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:17:25,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:17:25,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:17:25,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:17:25,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:17:25,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:17:25,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:17:25,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:17:25,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:17:25,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:17:25,205 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:17:25,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:25,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:17:25,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:17:25,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:17:25,206 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:17:25,206 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:17:25,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:17:25,207 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:17:25,207 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:17:25,208 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:17:25,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:17:25,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:17:25,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:17:25,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:17:25,293 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:17:25,294 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44_true-unreach-call.c [2018-10-25 00:17:25,363 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79f1e6c6a/1ad922007634460c9ca4f2a14d41bb91/FLAG88564beb9 [2018-10-25 00:17:26,095 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:17:26,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label44_true-unreach-call.c [2018-10-25 00:17:26,125 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79f1e6c6a/1ad922007634460c9ca4f2a14d41bb91/FLAG88564beb9 [2018-10-25 00:17:26,143 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79f1e6c6a/1ad922007634460c9ca4f2a14d41bb91 [2018-10-25 00:17:26,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:17:26,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:17:26,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:26,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:17:26,161 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:17:26,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:26" (1/1) ... [2018-10-25 00:17:26,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:26, skipping insertion in model container [2018-10-25 00:17:26,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:26" (1/1) ... [2018-10-25 00:17:26,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:17:26,267 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:17:26,971 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:26,976 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:17:27,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:27,307 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:17:27,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27 WrapperNode [2018-10-25 00:17:27,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:27,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:27,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:17:27,309 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:17:27,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:27,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:17:27,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:17:27,638 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:17:27,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... [2018-10-25 00:17:27,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:17:27,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:17:27,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:17:27,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:17:27,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:17:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:17:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:17:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:17:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:17:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:17:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:17:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:17:32,896 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:17:32,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:32 BoogieIcfgContainer [2018-10-25 00:17:32,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:17:32,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:17:32,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:17:32,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:17:32,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:17:26" (1/3) ... [2018-10-25 00:17:32,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:32, skipping insertion in model container [2018-10-25 00:17:32,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:27" (2/3) ... [2018-10-25 00:17:32,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:32, skipping insertion in model container [2018-10-25 00:17:32,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:32" (3/3) ... [2018-10-25 00:17:32,915 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label44_true-unreach-call.c [2018-10-25 00:17:32,926 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:17:32,936 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:17:32,955 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:17:33,006 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:17:33,006 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:17:33,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:17:33,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:17:33,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:17:33,007 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:17:33,007 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:17:33,007 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:17:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:17:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-25 00:17:33,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:33,061 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:33,063 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:33,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1268744215, now seen corresponding path program 1 times [2018-10-25 00:17:33,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:33,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:33,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:33,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:33,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:34,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:34,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:17:34,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:34,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:17:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:17:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:34,273 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:17:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:37,745 INFO L93 Difference]: Finished difference Result 1086 states and 1949 transitions. [2018-10-25 00:17:37,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:17:37,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2018-10-25 00:17:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:37,775 INFO L225 Difference]: With dead ends: 1086 [2018-10-25 00:17:37,775 INFO L226 Difference]: Without dead ends: 768 [2018-10-25 00:17:37,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2018-10-25 00:17:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 525. [2018-10-25 00:17:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-25 00:17:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 910 transitions. [2018-10-25 00:17:37,881 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 910 transitions. Word has length 184 [2018-10-25 00:17:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:37,882 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 910 transitions. [2018-10-25 00:17:37,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:17:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 910 transitions. [2018-10-25 00:17:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-25 00:17:37,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:37,894 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:37,894 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:37,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:37,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1064364326, now seen corresponding path program 1 times [2018-10-25 00:17:37,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:37,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:37,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:37,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:37,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:38,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:38,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:17:38,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:38,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:17:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:17:38,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:17:38,196 INFO L87 Difference]: Start difference. First operand 525 states and 910 transitions. Second operand 5 states. [2018-10-25 00:17:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:41,532 INFO L93 Difference]: Finished difference Result 1613 states and 2895 transitions. [2018-10-25 00:17:41,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:17:41,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2018-10-25 00:17:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:41,546 INFO L225 Difference]: With dead ends: 1613 [2018-10-25 00:17:41,546 INFO L226 Difference]: Without dead ends: 1094 [2018-10-25 00:17:41,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:17:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2018-10-25 00:17:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 864. [2018-10-25 00:17:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2018-10-25 00:17:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1422 transitions. [2018-10-25 00:17:41,615 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1422 transitions. Word has length 195 [2018-10-25 00:17:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:41,615 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1422 transitions. [2018-10-25 00:17:41,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:17:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1422 transitions. [2018-10-25 00:17:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-25 00:17:41,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:41,622 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:41,622 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:41,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:41,622 INFO L82 PathProgramCache]: Analyzing trace with hash -262902419, now seen corresponding path program 1 times [2018-10-25 00:17:41,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:41,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:41,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:41,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:41,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:41,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:41,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:41,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:41,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:41,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:41,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:41,949 INFO L87 Difference]: Start difference. First operand 864 states and 1422 transitions. Second operand 3 states. [2018-10-25 00:17:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:44,930 INFO L93 Difference]: Finished difference Result 2471 states and 4181 transitions. [2018-10-25 00:17:44,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:44,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2018-10-25 00:17:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:44,949 INFO L225 Difference]: With dead ends: 2471 [2018-10-25 00:17:44,949 INFO L226 Difference]: Without dead ends: 1613 [2018-10-25 00:17:44,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:44,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2018-10-25 00:17:45,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1610. [2018-10-25 00:17:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2018-10-25 00:17:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2542 transitions. [2018-10-25 00:17:45,031 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2542 transitions. Word has length 197 [2018-10-25 00:17:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:45,032 INFO L481 AbstractCegarLoop]: Abstraction has 1610 states and 2542 transitions. [2018-10-25 00:17:45,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2542 transitions. [2018-10-25 00:17:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 00:17:45,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:45,042 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:45,042 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:45,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -128043501, now seen corresponding path program 1 times [2018-10-25 00:17:45,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:45,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:45,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:45,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:45,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:45,270 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:17:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:17:45,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:45,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:45,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-10-25 00:17:45,349 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [17], [21], [25], [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], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:45,418 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:45,419 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:46,935 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:46,937 INFO L272 AbstractInterpreter]: Visited 185 different actions 185 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:17:46,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:46,976 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:48,004 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 73.4% of their original sizes. [2018-10-25 00:17:48,004 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:48,783 INFO L413 sIntCurrentIteration]: We have 204 unified AI predicates [2018-10-25 00:17:48,784 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:17:48,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:17:48,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:17:48,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:48,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:17:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:17:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:17:48,787 INFO L87 Difference]: Start difference. First operand 1610 states and 2542 transitions. Second operand 20 states. [2018-10-25 00:19:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:19:01,138 INFO L93 Difference]: Finished difference Result 3424 states and 5418 transitions. [2018-10-25 00:19:01,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:19:01,138 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 205 [2018-10-25 00:19:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:19:01,149 INFO L225 Difference]: With dead ends: 3424 [2018-10-25 00:19:01,149 INFO L226 Difference]: Without dead ends: 1820 [2018-10-25 00:19:01,155 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-10-25 00:19:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2018-10-25 00:19:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1818. [2018-10-25 00:19:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1818 states. [2018-10-25 00:19:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2758 transitions. [2018-10-25 00:19:01,203 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2758 transitions. Word has length 205 [2018-10-25 00:19:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:19:01,203 INFO L481 AbstractCegarLoop]: Abstraction has 1818 states and 2758 transitions. [2018-10-25 00:19:01,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:19:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2758 transitions. [2018-10-25 00:19:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 00:19:01,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:19:01,212 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:19:01,212 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:19:01,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:01,213 INFO L82 PathProgramCache]: Analyzing trace with hash 74938608, now seen corresponding path program 1 times [2018-10-25 00:19:01,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:19:01,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:01,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:19:01,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:01,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:19:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:19:01,499 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:19:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:19:01,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:19:01,665 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:19:01,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-25 00:19:01,666 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [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], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:19:01,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:19:01,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:19:02,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:19:02,899 INFO L272 AbstractInterpreter]: Visited 189 different actions 372 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:19:02,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:02,909 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:19:04,394 INFO L232 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 73.22% of their original sizes. [2018-10-25 00:19:04,395 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:19:05,439 INFO L413 sIntCurrentIteration]: We have 216 unified AI predicates [2018-10-25 00:19:05,439 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:19:05,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:19:05,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [9] total 38 [2018-10-25 00:19:05,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:19:05,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-25 00:19:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-25 00:19:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2018-10-25 00:19:05,442 INFO L87 Difference]: Start difference. First operand 1818 states and 2758 transitions. Second operand 31 states. [2018-10-25 00:20:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:58,602 INFO L93 Difference]: Finished difference Result 3636 states and 5642 transitions. [2018-10-25 00:20:58,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:20:58,603 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 217 [2018-10-25 00:20:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:58,613 INFO L225 Difference]: With dead ends: 3636 [2018-10-25 00:20:58,614 INFO L226 Difference]: Without dead ends: 2032 [2018-10-25 00:20:58,619 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2018-10-25 00:20:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2018-10-25 00:20:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2029. [2018-10-25 00:20:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2018-10-25 00:20:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2986 transitions. [2018-10-25 00:20:58,670 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2986 transitions. Word has length 217 [2018-10-25 00:20:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:58,670 INFO L481 AbstractCegarLoop]: Abstraction has 2029 states and 2986 transitions. [2018-10-25 00:20:58,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-25 00:20:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2986 transitions. [2018-10-25 00:20:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 00:20:58,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:58,678 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:58,679 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:58,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2031809899, now seen corresponding path program 1 times [2018-10-25 00:20:58,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:58,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:58,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:58,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:58,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:58,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:58,844 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:58,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-25 00:20:58,844 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [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], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:58,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:58,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:00,905 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:00,906 INFO L272 AbstractInterpreter]: Visited 190 different actions 371 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:00,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:00,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:00,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:00,913 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 [2018-10-25 00:21:00,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:00,922 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:01,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:21:01,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:21:01,615 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:01,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-10-25 00:21:01,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:01,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:21:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:21:01,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:01,616 INFO L87 Difference]: Start difference. First operand 2029 states and 2986 transitions. Second operand 3 states. [2018-10-25 00:21:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:02,371 INFO L93 Difference]: Finished difference Result 3632 states and 5525 transitions. [2018-10-25 00:21:02,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:21:02,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-10-25 00:21:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:02,382 INFO L225 Difference]: With dead ends: 3632 [2018-10-25 00:21:02,382 INFO L226 Difference]: Without dead ends: 2028 [2018-10-25 00:21:02,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2018-10-25 00:21:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2028. [2018-10-25 00:21:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2018-10-25 00:21:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2984 transitions. [2018-10-25 00:21:02,437 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2984 transitions. Word has length 217 [2018-10-25 00:21:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:02,437 INFO L481 AbstractCegarLoop]: Abstraction has 2028 states and 2984 transitions. [2018-10-25 00:21:02,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:21:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2984 transitions. [2018-10-25 00:21:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-25 00:21:02,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:02,446 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:02,446 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:02,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash -860808213, now seen corresponding path program 1 times [2018-10-25 00:21:02,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:02,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:02,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:02,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:02,730 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:02,730 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-25 00:21:02,730 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [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], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:02,735 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:02,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:07,185 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:07,186 INFO L272 AbstractInterpreter]: Visited 189 different actions 569 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:07,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:07,198 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:07,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:07,198 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 [2018-10-25 00:21:07,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:07,207 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:07,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:07,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:08,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:21:08,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-25 00:21:08,197 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:21:08,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:21:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:21:08,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:21:08,198 INFO L87 Difference]: Start difference. First operand 2028 states and 2984 transitions. Second operand 9 states. [2018-10-25 00:21:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:18,844 INFO L93 Difference]: Finished difference Result 14108 states and 27520 transitions. [2018-10-25 00:21:18,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-25 00:21:18,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2018-10-25 00:21:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:18,953 INFO L225 Difference]: With dead ends: 14108 [2018-10-25 00:21:18,953 INFO L226 Difference]: Without dead ends: 12505 [2018-10-25 00:21:19,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-10-25 00:21:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2018-10-25 00:21:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12282. [2018-10-25 00:21:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12282 states. [2018-10-25 00:21:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12282 states to 12282 states and 18795 transitions. [2018-10-25 00:21:19,504 INFO L78 Accepts]: Start accepts. Automaton has 12282 states and 18795 transitions. Word has length 226 [2018-10-25 00:21:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:19,505 INFO L481 AbstractCegarLoop]: Abstraction has 12282 states and 18795 transitions. [2018-10-25 00:21:19,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:21:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 12282 states and 18795 transitions. [2018-10-25 00:21:19,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-25 00:21:19,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:19,545 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, 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] [2018-10-25 00:21:19,545 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:19,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:19,546 INFO L82 PathProgramCache]: Analyzing trace with hash 575899775, now seen corresponding path program 1 times [2018-10-25 00:21:19,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:19,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:19,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:19,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:19,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:20,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:20,055 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:20,055 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-10-25 00:21:20,056 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [147], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:20,062 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:20,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:22,986 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:22,987 INFO L272 AbstractInterpreter]: Visited 189 different actions 370 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:22,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:22,992 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:22,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:22,992 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 [2018-10-25 00:21:23,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:23,001 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:23,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:21:23,377 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:21:23,788 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:23,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:21:23,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:23,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:21:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:21:23,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:23,792 INFO L87 Difference]: Start difference. First operand 12282 states and 18795 transitions. Second operand 3 states. [2018-10-25 00:21:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:26,069 INFO L93 Difference]: Finished difference Result 24292 states and 37469 transitions. [2018-10-25 00:21:26,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:21:26,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2018-10-25 00:21:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:26,144 INFO L225 Difference]: With dead ends: 24292 [2018-10-25 00:21:26,145 INFO L226 Difference]: Without dead ends: 15659 [2018-10-25 00:21:26,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 492 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15659 states. [2018-10-25 00:21:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15659 to 15442. [2018-10-25 00:21:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15442 states. [2018-10-25 00:21:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15442 states to 15442 states and 23649 transitions. [2018-10-25 00:21:26,643 INFO L78 Accepts]: Start accepts. Automaton has 15442 states and 23649 transitions. Word has length 247 [2018-10-25 00:21:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:26,644 INFO L481 AbstractCegarLoop]: Abstraction has 15442 states and 23649 transitions. [2018-10-25 00:21:26,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:21:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15442 states and 23649 transitions. [2018-10-25 00:21:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-25 00:21:26,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:26,710 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:26,711 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:26,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1298758771, now seen corresponding path program 1 times [2018-10-25 00:21:26,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:26,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:26,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:26,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:26,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:21:27,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:27,216 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:27,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-10-25 00:21:27,217 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [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], [260], [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], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:27,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:27,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 00:21:27,467 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 00:21:27,468 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 00:21:27,468 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 00:21:27,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:27,469 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 [2018-10-25 00:21:27,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:27,477 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:27,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:27,697 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 00:21:27,898 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:27,898 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:21:27,903 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:21:27,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:21:27 BoogieIcfgContainer [2018-10-25 00:21:27,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:21:27,904 INFO L168 Benchmark]: Toolchain (without parser) took 241749.53 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 282.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,906 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. [2018-10-25 00:21:27,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1151.54 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,908 INFO L168 Benchmark]: Boogie Preprocessor took 147.50 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,908 INFO L168 Benchmark]: RCFGBuilder took 5116.96 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: 263.9 MB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,909 INFO L168 Benchmark]: TraceAbstraction took 234997.83 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 789.1 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:27,914 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 1151.54 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.50 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5116.96 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: 263.9 MB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234997.83 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 789.1 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1566]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1566). Cancelled while BasicCegarLoop was analyzing trace of length 296 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 234.9s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 209.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2225 SDtfs, 9258 SDslu, 3163 SDs, 0 SdLazy, 21534 SolverSat, 2866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 162.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1892 GetRequests, 1774 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15442occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.5s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.998971667790346 AbsIntWeakeningRatio, 0.33095238095238094 AbsIntAvgWeakeningVarsNumRemoved, 29.340476190476192 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 921 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2378 NumberOfCodeBlocks, 2378 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3054 ConstructedInterpolants, 0 QuantifiedInterpolants, 1346960 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3156 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 564/595 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown