java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem13_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:55:08,277 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:55:08,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:55:08,292 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:55:08,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:55:08,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:55:08,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:55:08,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:55:08,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:55:08,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:55:08,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:55:08,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:55:08,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:55:08,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:55:08,303 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:55:08,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:55:08,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:55:08,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:55:08,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:55:08,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:55:08,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:55:08,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:55:08,315 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:55:08,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:55:08,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:55:08,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:55:08,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:55:08,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:55:08,320 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:55:08,321 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:55:08,321 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:55:08,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:55:08,322 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:55:08,322 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:55:08,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:55:08,324 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:55:08,324 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:55:08,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:55:08,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:55:08,355 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:55:08,355 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:55:08,356 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:55:08,356 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:55:08,356 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:55:08,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:55:08,357 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:55:08,358 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:55:08,358 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:55:08,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:55:08,359 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:55:08,359 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:55:08,359 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:55:08,359 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:55:08,360 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:55:08,360 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:55:08,360 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:55:08,360 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:55:08,360 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:55:08,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:55:08,361 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:55:08,361 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:55:08,361 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:55:08,361 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:55:08,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:55:08,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:55:08,362 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:55:08,362 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:55:08,362 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:55:08,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:55:08,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:55:08,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:55:08,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:55:08,427 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:55:08,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-11-07 08:55:08,487 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d1cefc7/0f3e779d811447dfb88c90146a47c5e9/FLAGa29ac0543 [2018-11-07 08:55:09,361 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:55:09,362 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-11-07 08:55:09,404 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d1cefc7/0f3e779d811447dfb88c90146a47c5e9/FLAGa29ac0543 [2018-11-07 08:55:09,429 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d1cefc7/0f3e779d811447dfb88c90146a47c5e9 [2018-11-07 08:55:09,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:55:09,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:55:09,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:55:09,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:55:09,453 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:55:09,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:09" (1/1) ... [2018-11-07 08:55:09,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2073f443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:09, skipping insertion in model container [2018-11-07 08:55:09,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:09" (1/1) ... [2018-11-07 08:55:09,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:55:09,653 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:55:11,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:11,038 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:55:11,808 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:11,847 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:55:11,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11 WrapperNode [2018-11-07 08:55:11,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:55:11,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:11,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:55:11,849 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:55:11,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:12,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:55:12,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:55:12,276 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:55:12,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... [2018-11-07 08:55:12,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:55:12,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:55:12,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:55:12,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:55:12,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:55:12,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:55:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:55:12,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:55:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:55:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:55:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:55:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:55:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:55:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:55:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:55:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:55:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:55:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:55:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:55:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:55:22,694 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:55:22,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:22 BoogieIcfgContainer [2018-11-07 08:55:22,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:55:22,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:55:22,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:55:22,701 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:55:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:55:09" (1/3) ... [2018-11-07 08:55:22,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67562250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:22, skipping insertion in model container [2018-11-07 08:55:22,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:11" (2/3) ... [2018-11-07 08:55:22,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67562250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:22, skipping insertion in model container [2018-11-07 08:55:22,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:22" (3/3) ... [2018-11-07 08:55:22,706 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56_true-unreach-call.c [2018-11-07 08:55:22,718 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:55:22,731 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:55:22,750 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:55:22,817 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:55:22,818 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:55:22,818 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:55:22,818 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:55:22,818 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:55:22,818 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:55:22,818 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:55:22,819 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:55:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:55:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 08:55:22,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:22,875 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] [2018-11-07 08:55:22,878 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:22,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash -460452772, now seen corresponding path program 1 times [2018-11-07 08:55:22,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:22,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:22,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:22,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:22,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:23,418 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:23,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:23,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:55:23,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:23,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:55:23,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:55:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:23,551 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:55:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:32,912 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-07 08:55:32,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:55:32,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-11-07 08:55:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:32,948 INFO L225 Difference]: With dead ends: 3087 [2018-11-07 08:55:32,949 INFO L226 Difference]: Without dead ends: 1965 [2018-11-07 08:55:32,962 INFO L604 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 [2018-11-07 08:55:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-07 08:55:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-07 08:55:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 08:55:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-07 08:55:33,123 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 60 [2018-11-07 08:55:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:33,124 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-07 08:55:33,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:55:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-07 08:55:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 08:55:33,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:33,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:55:33,134 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:33,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1916095534, now seen corresponding path program 1 times [2018-11-07 08:55:33,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:33,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:33,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:33,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:33,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:33,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:33,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:33,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:33,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:33,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:33,756 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-07 08:55:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:45,780 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-07 08:55:45,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:45,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-07 08:55:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:45,816 INFO L225 Difference]: With dead ends: 5634 [2018-11-07 08:55:45,817 INFO L226 Difference]: Without dead ends: 3681 [2018-11-07 08:55:45,825 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:55:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-07 08:55:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-07 08:55:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-07 08:55:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-07 08:55:45,932 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 137 [2018-11-07 08:55:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:45,933 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-07 08:55:45,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-07 08:55:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 08:55:45,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:45,939 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:55:45,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:45,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:45,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1937343332, now seen corresponding path program 1 times [2018-11-07 08:55:45,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:45,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:45,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:45,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:45,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:46,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:46,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:46,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:46,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:46,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:46,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:46,196 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-07 08:55:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:59,003 INFO L93 Difference]: Finished difference Result 12391 states and 20613 transitions. [2018-11-07 08:55:59,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:59,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-07 08:55:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:59,062 INFO L225 Difference]: With dead ends: 12391 [2018-11-07 08:55:59,062 INFO L226 Difference]: Without dead ends: 8747 [2018-11-07 08:55:59,087 INFO L604 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 [2018-11-07 08:55:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2018-11-07 08:55:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 8687. [2018-11-07 08:55:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2018-11-07 08:55:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 12870 transitions. [2018-11-07 08:55:59,366 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 12870 transitions. Word has length 156 [2018-11-07 08:55:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:59,367 INFO L480 AbstractCegarLoop]: Abstraction has 8687 states and 12870 transitions. [2018-11-07 08:55:59,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 12870 transitions. [2018-11-07 08:55:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-07 08:55:59,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:59,372 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:55:59,373 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:59,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -411394740, now seen corresponding path program 1 times [2018-11-07 08:55:59,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:59,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:59,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:59,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:59,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:59,692 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:59,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:59,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:59,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:59,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:59,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:59,898 INFO L87 Difference]: Start difference. First operand 8687 states and 12870 transitions. Second operand 6 states. [2018-11-07 08:56:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:10,083 INFO L93 Difference]: Finished difference Result 22915 states and 34933 transitions. [2018-11-07 08:56:10,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:56:10,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-11-07 08:56:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:10,170 INFO L225 Difference]: With dead ends: 22915 [2018-11-07 08:56:10,170 INFO L226 Difference]: Without dead ends: 14234 [2018-11-07 08:56:10,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:56:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14234 states. [2018-11-07 08:56:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14234 to 14063. [2018-11-07 08:56:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14063 states. [2018-11-07 08:56:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 19980 transitions. [2018-11-07 08:56:10,617 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 19980 transitions. Word has length 168 [2018-11-07 08:56:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:10,618 INFO L480 AbstractCegarLoop]: Abstraction has 14063 states and 19980 transitions. [2018-11-07 08:56:10,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 19980 transitions. [2018-11-07 08:56:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 08:56:10,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:10,631 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:56:10,631 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:10,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -457278060, now seen corresponding path program 1 times [2018-11-07 08:56:10,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:10,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:10,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:56:11,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:56:11,044 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:56:11,047 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 08:56:11,055 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3007], [3009], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:56:11,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:56:11,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:56:11,716 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:56:11,718 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:56:11,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:11,741 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:56:12,490 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 71.5% of their original sizes. [2018-11-07 08:56:12,491 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:56:12,607 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 08:56:12,607 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:56:12,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:56:12,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:56:12,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:12,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:12,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:12,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:12,610 INFO L87 Difference]: Start difference. First operand 14063 states and 19980 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 08:59:12,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:59:12,815 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:59:12,821 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:59:12,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:59:12 BoogieIcfgContainer [2018-11-07 08:59:12,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:59:12,822 INFO L168 Benchmark]: Toolchain (without parser) took 243378.47 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -738.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,824 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 08:59:12,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2400.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 426.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,826 INFO L168 Benchmark]: Boogie Preprocessor took 376.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,827 INFO L168 Benchmark]: RCFGBuilder took 10041.91 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -1.2 MB). Peak memory consumption was 681.6 MB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,828 INFO L168 Benchmark]: TraceAbstraction took 230125.76 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 08:59:12,834 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2400.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 426.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 376.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10041.91 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -1.2 MB). Peak memory consumption was 681.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230125.76 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (14063states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (14059 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 230.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 224.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2560 SDtfs, 14604 SDslu, 2186 SDs, 0 SdLazy, 22508 SolverSat, 5724 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 197.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 268 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14063occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977720456969472 AbsIntWeakeningRatio, 0.11688311688311688 AbsIntAvgWeakeningVarsNumRemoved, 16.445887445887447 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 268 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 753 NumberOfCodeBlocks, 753 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 421877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 270/341 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown