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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:37:48,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:37:48,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:37:48,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:37:48,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:37:48,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:37:48,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:37:48,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:37:48,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:37:48,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:37:48,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:37:48,861 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:37:48,862 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:37:48,862 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:37:48,866 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:37:48,867 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:37:48,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:37:48,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:37:48,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:37:48,883 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:37:48,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:37:48,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:37:48,893 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:37:48,894 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:37:48,894 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:37:48,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:37:48,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:37:48,896 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:37:48,897 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:37:48,898 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:37:48,898 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:37:48,899 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:37:48,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:37:48,917 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:37:48,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:37:48,918 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:37:48,918 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:37:48,918 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:37:48,918 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:37:48,919 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:37:48,919 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:37:48,919 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:37:48,919 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:37:48,919 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:37:48,920 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:37:48,920 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:37:48,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:37:48,921 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:37:48,921 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:37:48,921 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:37:48,921 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:37:48,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:37:48,922 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:37:48,922 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:37:48,922 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:37:48,922 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:37:48,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:37:48,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:37:48,923 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:37:48,923 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:37:48,923 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:37:48,923 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:37:48,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:37:48,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:37:48,924 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:37:48,924 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:37:48,924 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:37:48,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:37:49,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:37:49,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:37:49,006 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:37:49,006 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:37:49,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-24 21:37:49,071 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/380cbd208/b561d79397724b0b854c2fcdbb6e1eb5/FLAG80796b7c4 [2018-10-24 21:37:49,700 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:37:49,702 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-24 21:37:49,720 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/380cbd208/b561d79397724b0b854c2fcdbb6e1eb5/FLAG80796b7c4 [2018-10-24 21:37:49,737 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/380cbd208/b561d79397724b0b854c2fcdbb6e1eb5 [2018-10-24 21:37:49,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:37:49,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:37:49,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:37:49,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:37:49,757 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:37:49,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:49" (1/1) ... [2018-10-24 21:37:49,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:49, skipping insertion in model container [2018-10-24 21:37:49,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:49" (1/1) ... [2018-10-24 21:37:49,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:37:49,847 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:37:50,338 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:37:50,344 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:37:50,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:37:50,563 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:37:50,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50 WrapperNode [2018-10-24 21:37:50,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:37:50,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:37:50,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:37:50,565 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:37:50,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:37:50,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:37:50,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:37:50,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:37:50,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (1/1) ... [2018-10-24 21:37:50,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:37:50,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:37:50,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:37:50,912 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:37:50,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (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 [2018-10-24 21:37:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:37:50,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:37:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:37:50,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:37:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:37:50,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:37:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:37:50,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:37:54,615 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:37:54,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:54 BoogieIcfgContainer [2018-10-24 21:37:54,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:37:54,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:37:54,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:37:54,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:37:54,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:37:49" (1/3) ... [2018-10-24 21:37:54,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:54, skipping insertion in model container [2018-10-24 21:37:54,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:50" (2/3) ... [2018-10-24 21:37:54,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:54, skipping insertion in model container [2018-10-24 21:37:54,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:54" (3/3) ... [2018-10-24 21:37:54,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-10-24 21:37:54,638 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:37:54,648 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:37:54,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:37:54,701 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:37:54,702 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:37:54,702 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:37:54,702 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:37:54,702 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:37:54,702 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:37:54,703 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:37:54,703 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:37:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:37:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 21:37:54,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:54,751 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] [2018-10-24 21:37:54,754 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:54,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-10-24 21:37:54,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:54,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:54,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:54,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:54,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:55,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:55,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:37:55,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:55,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:37:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:37:55,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:55,308 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 21:37:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:58,235 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-24 21:37:58,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:37:58,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-24 21:37:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:58,262 INFO L225 Difference]: With dead ends: 894 [2018-10-24 21:37:58,262 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 21:37:58,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 21:37:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-24 21:37:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:37:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-24 21:37:58,366 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-10-24 21:37:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:58,367 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-24 21:37:58,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:37:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-24 21:37:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 21:37:58,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:58,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:37:58,377 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:58,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-10-24 21:37:58,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:58,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:58,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:58,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:58,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:58,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:58,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:37:58,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:58,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:37:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:37:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:58,685 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-24 21:38:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:01,501 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-10-24 21:38:01,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:38:01,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-24 21:38:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:01,515 INFO L225 Difference]: With dead ends: 1594 [2018-10-24 21:38:01,516 INFO L226 Difference]: Without dead ends: 780 [2018-10-24 21:38:01,523 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 [2018-10-24 21:38:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-10-24 21:38:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-10-24 21:38:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-10-24 21:38:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-10-24 21:38:01,563 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-10-24 21:38:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:01,564 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-10-24 21:38:01,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:38:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-10-24 21:38:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 21:38:01,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:01,577 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, 2, 2, 2, 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] [2018-10-24 21:38:01,577 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:01,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-10-24 21:38:01,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:01,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:01,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:01,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:01,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 21:38:01,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:38:01,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:38:01,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:38:01,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:38:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:38:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:38:01,902 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-10-24 21:38:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:06,698 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-10-24 21:38:06,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:38:06,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-24 21:38:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:06,723 INFO L225 Difference]: With dead ends: 3018 [2018-10-24 21:38:06,723 INFO L226 Difference]: Without dead ends: 2244 [2018-10-24 21:38:06,734 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 [2018-10-24 21:38:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-10-24 21:38:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-10-24 21:38:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-10-24 21:38:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-10-24 21:38:06,831 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-10-24 21:38:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:06,832 INFO L481 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-10-24 21:38:06,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:38:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-10-24 21:38:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-24 21:38:06,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:06,852 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:38:06,852 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:06,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:06,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-10-24 21:38:06,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:06,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:06,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:06,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:06,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:07,477 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 21:38:07,847 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 21:38:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:38:08,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:38:08,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:38:08,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-10-24 21:38:08,271 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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [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], [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], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:38:08,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:38:08,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:38:11,183 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:38:15,934 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:38:15,936 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:38:15,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:15,984 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:38:19,188 INFO L232 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 77.86% of their original sizes. [2018-10-24 21:38:19,189 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:38:19,818 INFO L413 sIntCurrentIteration]: We have 318 unified AI predicates [2018-10-24 21:38:19,818 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:38:19,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:38:19,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:38:19,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:38:19,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:38:19,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:38:19,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:38:19,822 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 8 states. [2018-10-24 21:38:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:34,729 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-10-24 21:38:34,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:38:34,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2018-10-24 21:38:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:34,746 INFO L225 Difference]: With dead ends: 4667 [2018-10-24 21:38:34,746 INFO L226 Difference]: Without dead ends: 2429 [2018-10-24 21:38:34,761 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:38:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-10-24 21:38:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-10-24 21:38:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-10-24 21:38:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-10-24 21:38:34,834 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-10-24 21:38:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:34,835 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-10-24 21:38:34,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:38:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-10-24 21:38:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-24 21:38:34,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:34,854 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:38:34,854 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:34,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:34,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-10-24 21:38:34,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:34,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:34,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:34,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:34,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:38:35,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:38:35,831 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:38:35,831 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-10-24 21:38:35,832 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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [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], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:38:35,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:38:35,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:38:38,190 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:38:45,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:38:45,069 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:38:45,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:45,080 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:38:49,812 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.56% of their original sizes. [2018-10-24 21:38:49,813 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:39:15,078 INFO L413 sIntCurrentIteration]: We have 403 unified AI predicates [2018-10-24 21:39:15,079 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:39:15,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:39:15,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-24 21:39:15,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:15,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:39:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:39:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:39:15,082 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 21:41:43,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 21:41:43,175 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:41:43,181 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:41:43,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:43 BoogieIcfgContainer [2018-10-24 21:41:43,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:41:43,182 INFO L168 Benchmark]: Toolchain (without parser) took 233432.55 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -656.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,183 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 21:41:43,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 235.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,186 INFO L168 Benchmark]: Boogie Preprocessor took 110.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,187 INFO L168 Benchmark]: RCFGBuilder took 3705.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,187 INFO L168 Benchmark]: TraceAbstraction took 228563.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -31.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:41:43,193 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 235.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3705.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228563.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -31.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (2427states) and FLOYD_HOARE automaton (currently 20 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (1129 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 644 SDtfs, 2897 SDslu, 406 SDs, 0 SdLazy, 5255 SolverSat, 1086 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 67.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 747 GetRequests, 688 SyntacticMatches, 20 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2427occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9966104846328568 AbsIntWeakeningRatio, 0.08044382801664356 AbsIntAvgWeakeningVarsNumRemoved, 661.4133148404993 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 201 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 548/846 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown