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_label56_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:56:37,833 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:56:37,835 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:56:37,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:56:37,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:56:37,848 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:56:37,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:56:37,852 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:56:37,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:56:37,856 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:56:37,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:56:37,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:56:37,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:56:37,863 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:56:37,867 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:56:37,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:56:37,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:56:37,873 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:56:37,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:56:37,884 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:56:37,886 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:56:37,887 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:56:37,892 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:56:37,892 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:56:37,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:56:37,893 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:56:37,897 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:56:37,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:56:37,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:56:37,902 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:56:37,902 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:56:37,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 23:56:37,906 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 [2018-10-26 23:56:37,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:56:37,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:56:37,936 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:56:37,936 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:56:37,936 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:56:37,937 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:56:37,937 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:56:37,937 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:56:37,937 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:56:37,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:56:37,938 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:56:37,938 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:56:37,938 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:56:37,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:56:37,940 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:56:37,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:56:37,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:56:37,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:56:37,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:56:37,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:56:37,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:56:37,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:56:37,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:56:37,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:56:37,942 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:56:37,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:56:37,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:56:37,942 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:56:37,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:56:37,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:56:37,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:56:38,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:56:38,003 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:56:38,004 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:56:38,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-26 23:56:38,055 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67c40595e/60c84cdf74384f97bdd144e596cebc8f/FLAGa7e161ef5 [2018-10-26 23:56:38,618 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:56:38,619 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-26 23:56:38,637 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67c40595e/60c84cdf74384f97bdd144e596cebc8f/FLAGa7e161ef5 [2018-10-26 23:56:38,665 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67c40595e/60c84cdf74384f97bdd144e596cebc8f [2018-10-26 23:56:38,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:56:38,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:56:38,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:38,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:56:38,692 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:56:38,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:38" (1/1) ... [2018-10-26 23:56:38,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:38, skipping insertion in model container [2018-10-26 23:56:38,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:38" (1/1) ... [2018-10-26 23:56:38,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:56:38,795 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:56:39,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:39,329 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:56:39,499 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:39,521 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:56:39,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39 WrapperNode [2018-10-26 23:56:39,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:39,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:39,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:56:39,524 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:56:39,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:39,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:56:39,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:56:39,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:56:39,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (1/1) ... [2018-10-26 23:56:39,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:56:39,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:56:39,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:56:39,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:56:39,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (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 [2018-10-26 23:56:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:56:39,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:56:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:56:39,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:56:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:56:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:56:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:56:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:56:43,451 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:56:43,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:43 BoogieIcfgContainer [2018-10-26 23:56:43,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:56:43,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:56:43,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:56:43,460 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:56:43,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:56:38" (1/3) ... [2018-10-26 23:56:43,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:43, skipping insertion in model container [2018-10-26 23:56:43,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:39" (2/3) ... [2018-10-26 23:56:43,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:43, skipping insertion in model container [2018-10-26 23:56:43,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:43" (3/3) ... [2018-10-26 23:56:43,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label56_false-unreach-call_false-termination.c [2018-10-26 23:56:43,476 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:56:43,488 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:56:43,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:56:43,545 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:56:43,546 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:56:43,546 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:56:43,546 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:56:43,546 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:56:43,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:56:43,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:56:43,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:56:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:56:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 23:56:43,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:43,590 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] [2018-10-26 23:56:43,592 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:43,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1546404148, now seen corresponding path program 1 times [2018-10-26 23:56:43,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:43,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:43,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:44,015 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:56:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:44,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:44,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:56:44,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:44,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:56:44,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:56:44,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:56:44,148 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:56:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:45,871 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-26 23:56:45,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:56:45,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-10-26 23:56:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:45,895 INFO L225 Difference]: With dead ends: 691 [2018-10-26 23:56:45,895 INFO L226 Difference]: Without dead ends: 434 [2018-10-26 23:56:45,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:56:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-26 23:56:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-26 23:56:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-26 23:56:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-26 23:56:45,992 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 24 [2018-10-26 23:56:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:45,993 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-26 23:56:45,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:56:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-26 23:56:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-26 23:56:46,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:46,001 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:56:46,001 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:46,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash -412678633, now seen corresponding path program 1 times [2018-10-26 23:56:46,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:46,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:46,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:46,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:46,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:46,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:46,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:56:46,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:46,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:56:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:56:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:56:46,343 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-26 23:56:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:48,450 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-26 23:56:48,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:56:48,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-26 23:56:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:48,460 INFO L225 Difference]: With dead ends: 1062 [2018-10-26 23:56:48,460 INFO L226 Difference]: Without dead ends: 634 [2018-10-26 23:56:48,463 INFO L605 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 [2018-10-26 23:56:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-26 23:56:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-26 23:56:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-26 23:56:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-26 23:56:48,520 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 111 [2018-10-26 23:56:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:48,520 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-26 23:56:48,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:56:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-26 23:56:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-26 23:56:48,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:48,524 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:56:48,525 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:48,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1086282972, now seen corresponding path program 1 times [2018-10-26 23:56:48,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:48,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:48,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:48,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:48,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:48,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:48,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:56:48,783 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:48,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:56:48,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:56:48,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:56:48,785 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-26 23:56:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:53,737 INFO L93 Difference]: Finished difference Result 2167 states and 3655 transitions. [2018-10-26 23:56:53,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:56:53,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2018-10-26 23:56:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:53,751 INFO L225 Difference]: With dead ends: 2167 [2018-10-26 23:56:53,751 INFO L226 Difference]: Without dead ends: 1172 [2018-10-26 23:56:53,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:56:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-10-26 23:56:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2018-10-26 23:56:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2018-10-26 23:56:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1890 transitions. [2018-10-26 23:56:53,812 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1890 transitions. Word has length 120 [2018-10-26 23:56:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:53,813 INFO L481 AbstractCegarLoop]: Abstraction has 1172 states and 1890 transitions. [2018-10-26 23:56:53,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:56:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1890 transitions. [2018-10-26 23:56:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-26 23:56:53,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:53,827 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:56:53,827 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:53,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1482099072, now seen corresponding path program 1 times [2018-10-26 23:56:53,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:53,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:53,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-26 23:56:54,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:54,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:56:54,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:54,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:56:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:56:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:56:54,145 INFO L87 Difference]: Start difference. First operand 1172 states and 1890 transitions. Second operand 4 states. [2018-10-26 23:56:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:56,504 INFO L93 Difference]: Finished difference Result 4363 states and 7273 transitions. [2018-10-26 23:56:56,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:56:56,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-26 23:56:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:56,534 INFO L225 Difference]: With dead ends: 4363 [2018-10-26 23:56:56,535 INFO L226 Difference]: Without dead ends: 3197 [2018-10-26 23:56:56,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:56:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2018-10-26 23:56:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2018-10-26 23:56:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-10-26 23:56:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4831 transitions. [2018-10-26 23:56:56,657 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4831 transitions. Word has length 224 [2018-10-26 23:56:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:56,658 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 4831 transitions. [2018-10-26 23:56:56,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:56:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4831 transitions. [2018-10-26 23:56:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-26 23:56:56,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:56,667 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:56:56,668 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:56,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 938793631, now seen corresponding path program 1 times [2018-10-26 23:56:56,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:56,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:56,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:56,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:56,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:57,169 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-26 23:56:57,553 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 23:56:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 34 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:56:57,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:56:57,778 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:56:57,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-26 23:56:57,781 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [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], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:56:57,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:56:57,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:57:00,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:57:03,371 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:57:03,373 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:57:03,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:03,407 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:57:06,489 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.47% of their original sizes. [2018-10-26 23:57:06,489 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:57:06,957 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-10-26 23:57:06,957 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:57:06,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:57:06,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-26 23:57:06,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:06,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:57:06,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:57:06,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:57:06,960 INFO L87 Difference]: Start difference. First operand 3197 states and 4831 transitions. Second operand 7 states. [2018-10-26 23:57:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:57:30,129 INFO L93 Difference]: Finished difference Result 6573 states and 9934 transitions. [2018-10-26 23:57:30,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:57:30,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-10-26 23:57:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:57:30,148 INFO L225 Difference]: With dead ends: 6573 [2018-10-26 23:57:30,148 INFO L226 Difference]: Without dead ends: 3382 [2018-10-26 23:57:30,168 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:57:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2018-10-26 23:57:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3380. [2018-10-26 23:57:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2018-10-26 23:57:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5022 transitions. [2018-10-26 23:57:30,266 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5022 transitions. Word has length 243 [2018-10-26 23:57:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:57:30,267 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5022 transitions. [2018-10-26 23:57:30,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:57:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5022 transitions. [2018-10-26 23:57:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-26 23:57:30,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:57:30,278 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:57:30,279 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:57:30,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1617683216, now seen corresponding path program 1 times [2018-10-26 23:57:30,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:57:30,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:30,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:57:30,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:30,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:57:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:57:31,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:57:31,078 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:57:31,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-26 23:57:31,079 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [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], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:57:31,085 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:57:31,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:57:33,074 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:57:37,819 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:57:37,820 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:57:37,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:37,823 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:57:40,665 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-26 23:57:40,666 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:58:18,196 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-10-26 23:58:18,196 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:58:18,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:58:18,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-26 23:58:18,197 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:58:18,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-26 23:58:18,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-26 23:58:18,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-26 23:58:18,199 INFO L87 Difference]: Start difference. First operand 3380 states and 5022 transitions. Second operand 24 states. Received shutdown request... [2018-10-27 00:00:41,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 00:00:41,290 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:00:41,296 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:00:41,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:00:41 BoogieIcfgContainer [2018-10-27 00:00:41,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:00:41,298 INFO L168 Benchmark]: Toolchain (without parser) took 242613.90 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,299 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-27 00:00:41,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.97 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 244.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 680.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -774.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,301 INFO L168 Benchmark]: Boogie Preprocessor took 114.15 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,302 INFO L168 Benchmark]: RCFGBuilder took 3569.85 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 124.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,303 INFO L168 Benchmark]: TraceAbstraction took 237843.30 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -528.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 00:00:41,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 834.97 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 244.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 680.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -774.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.15 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3569.85 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 124.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237843.30 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -528.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (3380states) and FLOYD_HOARE automaton (currently 21 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (2848 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 177.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 868 SDtfs, 4220 SDslu, 940 SDs, 0 SdLazy, 7851 SolverSat, 1649 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 610 GetRequests, 513 SyntacticMatches, 43 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 42.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3380occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957050253432157 AbsIntWeakeningRatio, 0.10193321616871705 AbsIntAvgWeakeningVarsNumRemoved, 621.5342706502636 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1044 ConstructedInterpolants, 0 QuantifiedInterpolants, 2181295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 338/622 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown