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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:24:47,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:24:47,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:24:47,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:24:47,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:24:47,759 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:24:47,760 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:24:47,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:24:47,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:24:47,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:24:47,770 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:24:47,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:24:47,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:24:47,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:24:47,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:24:47,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:24:47,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:24:47,786 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:24:47,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:24:47,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:24:47,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:24:47,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:24:47,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:24:47,797 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:24:47,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:24:47,798 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:24:47,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:24:47,800 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:24:47,801 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:24:47,802 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:24:47,802 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:24:47,803 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 03:24:47,805 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:24:47,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:24:47,828 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:24:47,829 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:24:47,829 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:24:47,830 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:24:47,830 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:24:47,830 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:24:47,830 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:24:47,830 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:24:47,831 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:24:47,831 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:24:47,831 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:24:47,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:24:47,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:24:47,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:24:47,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:24:47,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:24:47,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:24:47,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:24:47,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:24:47,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:24:47,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:24:47,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:24:47,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:24:47,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:24:47,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:24:47,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:24:47,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:24:47,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:24:47,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:24:47,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:24:47,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:24:47,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:24:47,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:24:47,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:24:47,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:24:47,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:24:47,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:24:47,904 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:24:47,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-11-07 03:24:47,983 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a974c0b/cd2162ddf76c480a9257ba732dbc95c6/FLAGcca5ca3c7 [2018-11-07 03:24:48,561 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:24:48,563 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-11-07 03:24:48,579 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a974c0b/cd2162ddf76c480a9257ba732dbc95c6/FLAGcca5ca3c7 [2018-11-07 03:24:48,597 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a974c0b/cd2162ddf76c480a9257ba732dbc95c6 [2018-11-07 03:24:48,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:24:48,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:24:48,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:48,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:24:48,616 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:24:48,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:48" (1/1) ... [2018-11-07 03:24:48,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:48, skipping insertion in model container [2018-11-07 03:24:48,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:48" (1/1) ... [2018-11-07 03:24:48,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:24:48,696 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:24:49,226 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:49,232 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:24:49,388 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:49,410 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:24:49,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49 WrapperNode [2018-11-07 03:24:49,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:49,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:49,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:24:49,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:24:49,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:49,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:24:49,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:24:49,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:24:49,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (1/1) ... [2018-11-07 03:24:49,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:24:49,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:24:49,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:24:49,677 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:24:49,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (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 03:24:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:24:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:24:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:24:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:24:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:24:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:24:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:24:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:24:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:24:53,629 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:24:53,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:53 BoogieIcfgContainer [2018-11-07 03:24:53,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:24:53,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:24:53,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:24:53,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:24:53,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:24:48" (1/3) ... [2018-11-07 03:24:53,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:53, skipping insertion in model container [2018-11-07 03:24:53,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:49" (2/3) ... [2018-11-07 03:24:53,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:53, skipping insertion in model container [2018-11-07 03:24:53,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:53" (3/3) ... [2018-11-07 03:24:53,640 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label17_true-unreach-call_false-termination.c [2018-11-07 03:24:53,650 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:24:53,658 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:24:53,673 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:24:53,716 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:24:53,716 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:24:53,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:24:53,717 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:24:53,717 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:24:53,717 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:24:53,717 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:24:53,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:24:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:24:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 03:24:53,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:53,762 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] [2018-11-07 03:24:53,765 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:53,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1535437935, now seen corresponding path program 1 times [2018-11-07 03:24:53,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:53,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:53,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:53,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:53,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:54,314 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 03:24:54,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:54,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:24:54,317 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:54,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:24:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:24:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:24:54,348 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 03:24:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:56,188 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 03:24:56,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:24:56,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 03:24:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:56,212 INFO L225 Difference]: With dead ends: 691 [2018-11-07 03:24:56,212 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 03:24:56,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:24:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 03:24:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 03:24:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 03:24:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-11-07 03:24:56,323 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 63 [2018-11-07 03:24:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:56,324 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-11-07 03:24:56,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:24:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-11-07 03:24:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 03:24:56,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:56,341 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, 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 03:24:56,341 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:56,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:56,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1025550080, now seen corresponding path program 1 times [2018-11-07 03:24:56,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:56,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:56,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:56,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:56,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:56,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:56,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:24:56,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:56,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:24:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:24:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:24:56,713 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-11-07 03:24:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:58,982 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-11-07 03:24:58,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:24:58,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 03:24:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:58,993 INFO L225 Difference]: With dead ends: 1254 [2018-11-07 03:24:58,993 INFO L226 Difference]: Without dead ends: 826 [2018-11-07 03:24:58,997 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 03:24:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-11-07 03:24:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-11-07 03:24:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-11-07 03:24:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-11-07 03:24:59,060 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 143 [2018-11-07 03:24:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:59,061 INFO L480 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-11-07 03:24:59,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:24:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-11-07 03:24:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 03:24:59,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:59,068 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, 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] [2018-11-07 03:24:59,068 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:59,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1017512645, now seen corresponding path program 1 times [2018-11-07 03:24:59,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:59,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:59,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:59,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:59,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:59,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:59,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:59,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:59,370 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-11-07 03:25:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:25:02,660 INFO L93 Difference]: Finished difference Result 1988 states and 3388 transitions. [2018-11-07 03:25:02,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:25:02,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-11-07 03:25:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:25:02,680 INFO L225 Difference]: With dead ends: 1988 [2018-11-07 03:25:02,681 INFO L226 Difference]: Without dead ends: 1182 [2018-11-07 03:25:02,689 INFO L604 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 [2018-11-07 03:25:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-11-07 03:25:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-11-07 03:25:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-11-07 03:25:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1751 transitions. [2018-11-07 03:25:02,749 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1751 transitions. Word has length 176 [2018-11-07 03:25:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:25:02,750 INFO L480 AbstractCegarLoop]: Abstraction has 1182 states and 1751 transitions. [2018-11-07 03:25:02,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:25:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1751 transitions. [2018-11-07 03:25:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-07 03:25:02,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:25:02,760 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, 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] [2018-11-07 03:25:02,760 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:25:02,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash -234886452, now seen corresponding path program 1 times [2018-11-07 03:25:02,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:25:02,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:02,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:25:02,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:02,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:25:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:25:03,177 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 03:25:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:25:03,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:25:03,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:25:03,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:25:03,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:25:03,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:25:03,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:25:03,486 INFO L87 Difference]: Start difference. First operand 1182 states and 1751 transitions. Second operand 6 states. [2018-11-07 03:25:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:25:07,290 INFO L93 Difference]: Finished difference Result 3270 states and 4972 transitions. [2018-11-07 03:25:07,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 03:25:07,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-11-07 03:25:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:25:07,308 INFO L225 Difference]: With dead ends: 3270 [2018-11-07 03:25:07,309 INFO L226 Difference]: Without dead ends: 2094 [2018-11-07 03:25:07,318 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:25:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2018-11-07 03:25:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2013. [2018-11-07 03:25:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2018-11-07 03:25:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2916 transitions. [2018-11-07 03:25:07,392 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2916 transitions. Word has length 229 [2018-11-07 03:25:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:25:07,393 INFO L480 AbstractCegarLoop]: Abstraction has 2013 states and 2916 transitions. [2018-11-07 03:25:07,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:25:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2916 transitions. [2018-11-07 03:25:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-07 03:25:07,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:25:07,406 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:07,407 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:25:07,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash -356461826, now seen corresponding path program 1 times [2018-11-07 03:25:07,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:25:07,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:07,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:25:07,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:07,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:25:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:25:07,992 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:25:08,202 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:25:08,420 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:25:08,761 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 03:25:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:25:09,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:25:09,435 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:25:09,436 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-11-07 03:25:09,439 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:25:09,531 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:25:09,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:25:15,219 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:25:25,420 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:25:25,421 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:25:25,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:25,435 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:25:29,606 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 79.85% of their original sizes. [2018-11-07 03:25:29,606 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:26:03,424 INFO L415 sIntCurrentIteration]: We unified 313 AI predicates to 313 [2018-11-07 03:26:03,425 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:26:03,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:26:03,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [14] total 28 [2018-11-07 03:26:03,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:26:03,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 03:26:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 03:26:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-07 03:26:03,427 INFO L87 Difference]: Start difference. First operand 2013 states and 2916 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 03:28:50,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 03:28:50,898 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:28:50,904 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:28:50,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:28:50 BoogieIcfgContainer [2018-11-07 03:28:50,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:28:50,905 INFO L168 Benchmark]: Toolchain (without parser) took 242295.49 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:28:50,906 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:28:50,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.72 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:50,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 151.85 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -811.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:50,909 INFO L168 Benchmark]: Boogie Preprocessor took 111.90 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:28:50,910 INFO L168 Benchmark]: RCFGBuilder took 3953.59 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:50,910 INFO L168 Benchmark]: TraceAbstraction took 237273.05 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -851.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:28:50,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 799.72 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 151.85 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -811.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.90 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3953.59 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237273.05 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -851.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (2013states) and FLOYD_HOARE automaton (currently 20 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1910 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 178.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 510 SDtfs, 3490 SDslu, 482 SDs, 0 SdLazy, 7091 SolverSat, 1190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 352 GetRequests, 268 SyntacticMatches, 45 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 36.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2013occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962321155716071 AbsIntWeakeningRatio, 0.08306709265175719 AbsIntAvgWeakeningVarsNumRemoved, 406.8115015974441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 95 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 925 NumberOfCodeBlocks, 925 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 3041061 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 363/365 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown