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_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:14:28,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:14:28,586 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:14:28,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:14:28,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:14:28,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:14:28,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:14:28,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:14:28,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:14:28,608 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:14:28,609 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:14:28,610 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:14:28,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:14:28,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:14:28,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:14:28,619 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:14:28,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:14:28,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:14:28,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:14:28,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:14:28,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:14:28,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:14:28,631 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:14:28,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:14:28,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:14:28,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:14:28,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:14:28,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:14:28,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:14:28,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:14:28,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:14:28,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:14:28,641 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 00:14:28,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:14:28,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:14:28,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:14:28,675 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:14:28,675 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:14:28,676 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:14:28,676 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:14:28,676 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:14:28,676 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:14:28,676 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:14:28,676 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:14:28,677 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:14:28,677 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:14:28,677 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:14:28,679 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:14:28,679 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:14:28,679 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:14:28,679 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:14:28,679 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:14:28,679 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:14:28,681 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:14:28,682 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:14:28,682 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:14:28,682 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:14:28,682 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:14:28,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:14:28,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:14:28,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:14:28,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:14:28,683 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:14:28,683 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:14:28,684 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:14:28,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:14:28,684 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:14:28,684 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:14:28,684 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:14:28,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:14:28,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:14:28,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:14:28,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:14:28,763 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:14:28,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label33_true-unreach-call.c [2018-10-25 00:14:28,836 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1918b2de5/9bb7b68f83924490a0e06327d728b078/FLAGa73f2453b [2018-10-25 00:14:29,564 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:14:29,565 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label33_true-unreach-call.c [2018-10-25 00:14:29,586 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1918b2de5/9bb7b68f83924490a0e06327d728b078/FLAGa73f2453b [2018-10-25 00:14:29,606 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1918b2de5/9bb7b68f83924490a0e06327d728b078 [2018-10-25 00:14:29,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:14:29,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:14:29,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:14:29,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:14:29,625 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:14:29,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:14:29" (1/1) ... [2018-10-25 00:14:29,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f77a5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:29, skipping insertion in model container [2018-10-25 00:14:29,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:14:29" (1/1) ... [2018-10-25 00:14:29,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:14:29,726 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:14:30,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:14:30,452 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:14:30,807 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:14:30,831 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:14:30,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30 WrapperNode [2018-10-25 00:14:30,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:14:30,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:14:30,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:14:30,835 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:14:30,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:30,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:14:31,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:14:31,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:14:31,166 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:14:31,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (1/1) ... [2018-10-25 00:14:31,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:14:31,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:14:31,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:14:31,326 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:14:31,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (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 00:14:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:14:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:14:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:14:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:14:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:14:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:14:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:14:31,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:14:36,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:14:36,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:14:36 BoogieIcfgContainer [2018-10-25 00:14:36,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:14:36,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:14:36,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:14:36,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:14:36,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:14:29" (1/3) ... [2018-10-25 00:14:36,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ad68b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:14:36, skipping insertion in model container [2018-10-25 00:14:36,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:14:30" (2/3) ... [2018-10-25 00:14:36,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ad68b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:14:36, skipping insertion in model container [2018-10-25 00:14:36,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:14:36" (3/3) ... [2018-10-25 00:14:36,592 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label33_true-unreach-call.c [2018-10-25 00:14:36,603 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:14:36,620 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:14:36,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:14:36,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:14:36,702 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:14:36,702 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:14:36,702 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:14:36,703 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:14:36,703 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:14:36,703 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:14:36,703 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:14:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:14:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-25 00:14:36,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:36,768 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] [2018-10-25 00:14:36,770 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:36,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1523198655, now seen corresponding path program 1 times [2018-10-25 00:14:36,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:36,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:36,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:36,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:36,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:37,746 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:14:38,095 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 00:14:38,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:14:38,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:14:38,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:38,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:14:38,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:14:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:14:38,125 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:14:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:41,785 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-10-25 00:14:41,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:14:41,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-10-25 00:14:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:41,814 INFO L225 Difference]: With dead ends: 1074 [2018-10-25 00:14:41,814 INFO L226 Difference]: Without dead ends: 756 [2018-10-25 00:14:41,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:14:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-10-25 00:14:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-10-25 00:14:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-25 00:14:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-25 00:14:41,930 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 166 [2018-10-25 00:14:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:41,933 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-25 00:14:41,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:14:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-25 00:14:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-25 00:14:41,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:41,952 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:14:41,953 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:41,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:41,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1150384964, now seen corresponding path program 1 times [2018-10-25 00:14:41,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:41,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:41,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:41,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:41,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:42,334 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:14:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:42,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:14:42,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:14:42,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:42,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:14:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:14:42,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:14:42,679 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-10-25 00:14:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:45,408 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-10-25 00:14:45,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:14:45,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-10-25 00:14:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:45,419 INFO L225 Difference]: With dead ends: 1482 [2018-10-25 00:14:45,420 INFO L226 Difference]: Without dead ends: 968 [2018-10-25 00:14:45,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:14:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-25 00:14:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-10-25 00:14:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-25 00:14:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-25 00:14:45,490 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 194 [2018-10-25 00:14:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:45,490 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-25 00:14:45,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:14:45,491 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-25 00:14:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-25 00:14:45,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:45,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:45,500 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:45,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 657963577, now seen corresponding path program 1 times [2018-10-25 00:14:45,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:45,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:45,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:45,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:45,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:45,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:14:45,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:14:45,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:45,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:14:45,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:14:45,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:14:45,975 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 4 states. [2018-10-25 00:14:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:49,349 INFO L93 Difference]: Finished difference Result 3400 states and 5827 transitions. [2018-10-25 00:14:49,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:14:49,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-10-25 00:14:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:49,439 INFO L225 Difference]: With dead ends: 3400 [2018-10-25 00:14:49,439 INFO L226 Difference]: Without dead ends: 2457 [2018-10-25 00:14:49,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:14:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2018-10-25 00:14:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2438. [2018-10-25 00:14:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2018-10-25 00:14:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3885 transitions. [2018-10-25 00:14:49,533 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3885 transitions. Word has length 212 [2018-10-25 00:14:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:49,534 INFO L481 AbstractCegarLoop]: Abstraction has 2438 states and 3885 transitions. [2018-10-25 00:14:49,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:14:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3885 transitions. [2018-10-25 00:14:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-25 00:14:49,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:49,546 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2018-10-25 00:14:49,546 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:49,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:49,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1742559296, now seen corresponding path program 1 times [2018-10-25 00:14:49,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:49,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:49,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:49,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:49,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:49,798 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:14:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 53 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-25 00:14:49,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:49,921 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:49,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-10-25 00:14:49,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:49,988 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:49,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:51,112 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:14:51,114 INFO L272 AbstractInterpreter]: Visited 168 different actions 168 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:14:51,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:51,157 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:14:52,327 INFO L232 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 71.12% of their original sizes. [2018-10-25 00:14:52,327 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:14:52,846 INFO L413 sIntCurrentIteration]: We have 229 unified AI predicates [2018-10-25 00:14:52,847 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:14:52,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:14:52,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-25 00:14:52,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:52,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 00:14:52,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 00:14:52,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:14:52,851 INFO L87 Difference]: Start difference. First operand 2438 states and 3885 transitions. Second operand 14 states. [2018-10-25 00:15:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:27,029 INFO L93 Difference]: Finished difference Result 5080 states and 8073 transitions. [2018-10-25 00:15:27,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:15:27,030 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 230 [2018-10-25 00:15:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:27,047 INFO L225 Difference]: With dead ends: 5080 [2018-10-25 00:15:27,047 INFO L226 Difference]: Without dead ends: 2648 [2018-10-25 00:15:27,057 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:15:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2018-10-25 00:15:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2646. [2018-10-25 00:15:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2018-10-25 00:15:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 4103 transitions. [2018-10-25 00:15:27,137 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 4103 transitions. Word has length 230 [2018-10-25 00:15:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:27,137 INFO L481 AbstractCegarLoop]: Abstraction has 2646 states and 4103 transitions. [2018-10-25 00:15:27,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-25 00:15:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 4103 transitions. [2018-10-25 00:15:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-25 00:15:27,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:27,149 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2018-10-25 00:15:27,150 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:27,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -902535293, now seen corresponding path program 1 times [2018-10-25 00:15:27,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:27,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:27,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:27,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:27,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 73 proven. 39 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-25 00:15:27,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:27,442 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:27,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-25 00:15:27,443 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:27,459 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:27,460 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:28,638 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:28,638 INFO L272 AbstractInterpreter]: Visited 172 different actions 338 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 00:15:28,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:28,647 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:30,135 INFO L232 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 71.14% of their original sizes. [2018-10-25 00:15:30,135 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:31,014 INFO L413 sIntCurrentIteration]: We have 241 unified AI predicates [2018-10-25 00:15:31,014 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:31,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:31,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-25 00:15:31,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:31,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-25 00:15:31,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-25 00:15:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-10-25 00:15:31,017 INFO L87 Difference]: Start difference. First operand 2646 states and 4103 transitions. Second operand 21 states. [2018-10-25 00:17:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:30,337 INFO L93 Difference]: Finished difference Result 5292 states and 8297 transitions. [2018-10-25 00:17:30,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:17:30,337 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 242 [2018-10-25 00:17:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:30,351 INFO L225 Difference]: With dead ends: 5292 [2018-10-25 00:17:30,352 INFO L226 Difference]: Without dead ends: 2860 [2018-10-25 00:17:30,360 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2018-10-25 00:17:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2018-10-25 00:17:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2857. [2018-10-25 00:17:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2857 states. [2018-10-25 00:17:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4331 transitions. [2018-10-25 00:17:30,437 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4331 transitions. Word has length 242 [2018-10-25 00:17:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:30,437 INFO L481 AbstractCegarLoop]: Abstraction has 2857 states and 4331 transitions. [2018-10-25 00:17:30,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-25 00:17:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4331 transitions. [2018-10-25 00:17:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-25 00:17:30,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:30,449 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:30,449 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:30,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:30,450 INFO L82 PathProgramCache]: Analyzing trace with hash 644413327, now seen corresponding path program 1 times [2018-10-25 00:17:30,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:30,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:30,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:30,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:30,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 102 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-25 00:17:30,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:30,728 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:30,729 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-10-25 00:17:30,729 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:30,741 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:30,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:41,237 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:17:41,237 INFO L272 AbstractInterpreter]: Visited 173 different actions 695 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:17:41,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:41,248 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:17:41,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:41,249 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 00:17:41,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:41,262 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:17:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:41,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:17:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-25 00:17:41,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:17:42,134 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 00:17:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 105 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-25 00:17:42,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:17:42,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:17:42,754 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:17:42,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:17:42,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:17:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:17:42,756 INFO L87 Difference]: Start difference. First operand 2857 states and 4331 transitions. Second operand 9 states. [2018-10-25 00:17:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:46,503 INFO L93 Difference]: Finished difference Result 7616 states and 12365 transitions. [2018-10-25 00:17:46,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:17:46,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-10-25 00:17:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:46,531 INFO L225 Difference]: With dead ends: 7616 [2018-10-25 00:17:46,531 INFO L226 Difference]: Without dead ends: 5184 [2018-10-25 00:17:46,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:17:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2018-10-25 00:17:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4890. [2018-10-25 00:17:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4890 states. [2018-10-25 00:17:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 7033 transitions. [2018-10-25 00:17:46,695 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 7033 transitions. Word has length 252 [2018-10-25 00:17:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:46,695 INFO L481 AbstractCegarLoop]: Abstraction has 4890 states and 7033 transitions. [2018-10-25 00:17:46,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:17:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 7033 transitions. [2018-10-25 00:17:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-25 00:17:46,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:46,715 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:17:46,715 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:46,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash 570820074, now seen corresponding path program 1 times [2018-10-25 00:17:46,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:46,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:46,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:46,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:46,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:47,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:47,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:47,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-10-25 00:17:47,391 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:47,402 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:47,402 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:53,686 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:17:53,686 INFO L272 AbstractInterpreter]: Visited 171 different actions 510 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:17:53,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:53,698 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:17:53,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:53,698 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 00:17:53,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:53,707 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:17:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:53,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:17:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:53,993 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:17:54,373 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-25 00:17:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:54,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:17:54,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 00:17:54,553 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:17:54,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 00:17:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 00:17:54,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:17:54,555 INFO L87 Difference]: Start difference. First operand 4890 states and 7033 transitions. Second operand 7 states. [2018-10-25 00:17:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:58,222 INFO L93 Difference]: Finished difference Result 17319 states and 27645 transitions. [2018-10-25 00:17:58,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:17:58,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2018-10-25 00:17:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:58,332 INFO L225 Difference]: With dead ends: 17319 [2018-10-25 00:17:58,332 INFO L226 Difference]: Without dead ends: 12854 [2018-10-25 00:17:58,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 589 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:17:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2018-10-25 00:17:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 12607. [2018-10-25 00:17:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12607 states. [2018-10-25 00:17:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 17705 transitions. [2018-10-25 00:17:58,855 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 17705 transitions. Word has length 295 [2018-10-25 00:17:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 12607 states and 17705 transitions. [2018-10-25 00:17:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 00:17:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 17705 transitions. [2018-10-25 00:17:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-25 00:17:58,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:58,897 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:58,898 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:58,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:58,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1488395281, now seen corresponding path program 1 times [2018-10-25 00:17:58,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:58,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:58,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 155 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-25 00:17:59,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:59,512 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:59,512 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-25 00:17:59,512 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [320], [322], [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], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:59,518 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:59,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:18:14,249 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:18:14,249 INFO L272 AbstractInterpreter]: Visited 175 different actions 888 times. Merged at 9 different actions 63 times. Widened at 1 different actions 7 times. Found 12 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:18:14,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:14,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:18:14,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:14,256 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 00:18:14,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:14,268 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:18:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:14,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:18:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-25 00:18:14,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:18:15,024 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-10-25 00:18:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 155 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-25 00:18:15,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:18:15,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-10-25 00:18:15,319 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:18:15,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 00:18:15,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 00:18:15,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:18:15,320 INFO L87 Difference]: Start difference. First operand 12607 states and 17705 transitions. Second operand 10 states. [2018-10-25 00:18:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:25,295 INFO L93 Difference]: Finished difference Result 49096 states and 79055 transitions. [2018-10-25 00:18:25,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-25 00:18:25,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2018-10-25 00:18:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:25,540 INFO L225 Difference]: With dead ends: 49096 [2018-10-25 00:18:25,540 INFO L226 Difference]: Without dead ends: 36914 [2018-10-25 00:18:25,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 647 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2018-10-25 00:18:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36914 states. [2018-10-25 00:18:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36914 to 35708. [2018-10-25 00:18:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35708 states. [2018-10-25 00:18:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35708 states to 35708 states and 46832 transitions. [2018-10-25 00:18:26,919 INFO L78 Accepts]: Start accepts. Automaton has 35708 states and 46832 transitions. Word has length 305 [2018-10-25 00:18:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:26,919 INFO L481 AbstractCegarLoop]: Abstraction has 35708 states and 46832 transitions. [2018-10-25 00:18:26,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-25 00:18:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 35708 states and 46832 transitions. [2018-10-25 00:18:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-25 00:18:26,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:26,991 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:26,991 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:26,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1883711711, now seen corresponding path program 1 times [2018-10-25 00:18:26,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:26,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:26,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:26,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:26,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:18:27,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:27,717 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:18:27,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-10-25 00:18:27,717 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], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [428], [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], [789], [791], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:18:27,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:18:27,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 00:18:30,449 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 00:18:30,450 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 00:18:30,450 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 00:18:30,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:30,450 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 00:18:30,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:30,458 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:18:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:30,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:18:30,727 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 00:18:30,928 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:18:30,929 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:18:30,938 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:18:30,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:18:30 BoogieIcfgContainer [2018-10-25 00:18:30,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:18:30,940 INFO L168 Benchmark]: Toolchain (without parser) took 241320.83 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -836.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,944 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. [2018-10-25 00:18:30,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1211.54 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,948 INFO L168 Benchmark]: Boogie Preprocessor took 159.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,949 INFO L168 Benchmark]: RCFGBuilder took 5252.50 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: 271.2 MB). Peak memory consumption was 271.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,950 INFO L168 Benchmark]: TraceAbstraction took 234359.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -340.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 00:18:30,964 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 1211.54 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5252.50 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: 271.2 MB). Peak memory consumption was 271.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234359.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -340.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1512]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1512). Cancelled while BasicCegarLoop was analyzing trace of length 316 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 234.2s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1614 SDtfs, 10923 SDslu, 3520 SDs, 0 SdLazy, 23819 SolverSat, 3768 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2326 GetRequests, 2187 SyntacticMatches, 7 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35708occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.7s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.9987341061422444 AbsIntWeakeningRatio, 0.3382978723404255 AbsIntAvgWeakeningVarsNumRemoved, 28.214893617021275 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 2026 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2748 NumberOfCodeBlocks, 2748 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3586 ConstructedInterpolants, 0 QuantifiedInterpolants, 1966471 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3943 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 1784/1967 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown