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_label50_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:42:44,623 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:42:44,625 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:42:44,637 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:42:44,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:42:44,639 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:42:44,640 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:42:44,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:42:44,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:42:44,645 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:42:44,646 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:42:44,646 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:42:44,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:42:44,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:42:44,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:42:44,650 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:42:44,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:42:44,652 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:42:44,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:42:44,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:42:44,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:42:44,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:42:44,661 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:42:44,662 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:42:44,662 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:42:44,663 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:42:44,664 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:42:44,665 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:42:44,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:42:44,667 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:42:44,667 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:42:44,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:42:44,670 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 21:42:44,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:42:44,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:42:44,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:42:44,688 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:42:44,688 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:42:44,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:42:44,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:42:44,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:42:44,689 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:42:44,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:42:44,689 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:42:44,689 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:42:44,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:42:44,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:42:44,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:42:44,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:42:44,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:42:44,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:42:44,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:42:44,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:42:44,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:42:44,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:42:44,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:42:44,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:42:44,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:42:44,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:42:44,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:42:44,693 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:42:44,693 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:42:44,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:42:44,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:42:44,694 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:42:44,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:42:44,694 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:42:44,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:42:44,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:42:44,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:42:44,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:42:44,756 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:42:44,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-10-24 21:42:44,821 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d0dd8048/e13bab9d67fc4869a307e478ea044f92/FLAG176499b14 [2018-10-24 21:42:45,443 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:42:45,445 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-10-24 21:42:45,465 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d0dd8048/e13bab9d67fc4869a307e478ea044f92/FLAG176499b14 [2018-10-24 21:42:45,490 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d0dd8048/e13bab9d67fc4869a307e478ea044f92 [2018-10-24 21:42:45,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:42:45,503 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:42:45,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:45,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:42:45,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:42:45,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:45" (1/1) ... [2018-10-24 21:42:45,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a967ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:45, skipping insertion in model container [2018-10-24 21:42:45,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:45" (1/1) ... [2018-10-24 21:42:45,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:42:45,595 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:42:46,243 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:46,248 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:42:46,422 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:46,445 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:42:46,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46 WrapperNode [2018-10-24 21:42:46,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:46,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:46,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:42:46,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:42:46,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:46,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:42:46,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:42:46,652 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:42:46,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (1/1) ... [2018-10-24 21:42:46,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:42:46,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:42:46,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:42:46,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:42:46,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (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 21:42:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:42:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:42:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:42:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:42:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:42:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:42:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:42:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:42:50,499 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:42:50,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:50 BoogieIcfgContainer [2018-10-24 21:42:50,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:42:50,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:42:50,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:42:50,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:42:50,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:42:45" (1/3) ... [2018-10-24 21:42:50,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b0b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:50, skipping insertion in model container [2018-10-24 21:42:50,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:46" (2/3) ... [2018-10-24 21:42:50,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b0b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:50, skipping insertion in model container [2018-10-24 21:42:50,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:50" (3/3) ... [2018-10-24 21:42:50,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50_true-unreach-call_false-termination.c [2018-10-24 21:42:50,520 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:42:50,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:42:50,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:42:50,589 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:42:50,589 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:42:50,589 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:42:50,589 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:42:50,590 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:42:50,590 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:42:50,590 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:42:50,590 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:42:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:42:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 21:42:50,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:50,632 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] [2018-10-24 21:42:50,634 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:50,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash -50157732, now seen corresponding path program 1 times [2018-10-24 21:42:50,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:50,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:50,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:50,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:50,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:51,125 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 21:42:51,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:51,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:42:51,129 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:51,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:42:51,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:42:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:42:51,157 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:42:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:53,052 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:42:53,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:42:53,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-10-24 21:42:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:53,081 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:42:53,081 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:42:53,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:42:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:42:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:42:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:42:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:42:53,195 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 44 [2018-10-24 21:42:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:53,196 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:42:53,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:42:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:42:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 21:42:53,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:53,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:53,206 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:53,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1724157031, now seen corresponding path program 1 times [2018-10-24 21:42:53,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:53,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:53,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:53,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:53,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:53,578 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:42:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:53,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:53,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:42:53,851 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:53,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:42:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:42:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:42:53,854 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:42:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:56,029 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 21:42:56,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:42:56,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 21:42:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:56,036 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 21:42:56,036 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 21:42:56,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:42:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 21:42:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 21:42:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 21:42:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 21:42:56,092 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 131 [2018-10-24 21:42:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:56,093 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 21:42:56,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:42:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 21:42:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:42:56,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:56,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:56,105 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:56,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash 415093804, now seen corresponding path program 1 times [2018-10-24 21:42:56,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:56,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:56,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:56,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:56,108 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:56,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:56,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:42:56,300 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:56,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:42:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:42:56,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:42:56,301 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 21:42:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:59,972 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-10-24 21:42:59,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:42:59,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-10-24 21:42:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:59,991 INFO L225 Difference]: With dead ends: 2352 [2018-10-24 21:42:59,991 INFO L226 Difference]: Without dead ends: 1733 [2018-10-24 21:43:00,001 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 21:43:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-24 21:43:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-24 21:43:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 21:43:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2668 transitions. [2018-10-24 21:43:00,093 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2668 transitions. Word has length 140 [2018-10-24 21:43:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:00,094 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2668 transitions. [2018-10-24 21:43:00,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:43:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2668 transitions. [2018-10-24 21:43:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-24 21:43:00,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:00,110 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:43:00,110 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:00,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash -872463117, now seen corresponding path program 1 times [2018-10-24 21:43:00,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:00,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:00,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:00,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:00,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:00,684 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-24 21:43:00,937 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 21:43:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:01,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:01,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:01,746 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-10-24 21:43:01,748 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], [253], [255], [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], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:01,818 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:01,818 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:04,566 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:43:07,750 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:07,752 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:43:07,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:07,785 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:11,036 INFO L232 lantSequenceWeakener]: Weakened 269 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-24 21:43:11,036 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:43:11,482 INFO L413 sIntCurrentIteration]: We have 276 unified AI predicates [2018-10-24 21:43:11,483 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:43:11,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:43:11,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2018-10-24 21:43:11,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:11,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:43:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:43:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:43:11,486 INFO L87 Difference]: Start difference. First operand 1733 states and 2668 transitions. Second operand 7 states. [2018-10-24 21:43:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:38,537 INFO L93 Difference]: Finished difference Result 3645 states and 5630 transitions. [2018-10-24 21:43:38,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:43:38,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-10-24 21:43:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:38,549 INFO L225 Difference]: With dead ends: 3645 [2018-10-24 21:43:38,549 INFO L226 Difference]: Without dead ends: 1918 [2018-10-24 21:43:38,557 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 277 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:43:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-24 21:43:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-24 21:43:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 21:43:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2859 transitions. [2018-10-24 21:43:38,607 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2859 transitions. Word has length 277 [2018-10-24 21:43:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:38,608 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2859 transitions. [2018-10-24 21:43:38,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:43:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2859 transitions. [2018-10-24 21:43:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-24 21:43:38,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:38,619 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:38,620 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:38,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:38,620 INFO L82 PathProgramCache]: Analyzing trace with hash 594401252, now seen corresponding path program 1 times [2018-10-24 21:43:38,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:38,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:38,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:38,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:38,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:39,164 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:43:39,341 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:43:39,573 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:43:39,929 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 21:43:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 199 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:43:40,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:40,378 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:40,378 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-10-24 21:43:40,379 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], [253], [255], [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], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:40,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:40,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:42,441 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:43:50,073 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:50,073 INFO L272 AbstractInterpreter]: Visited 129 different actions 251 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 21:43:50,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:50,084 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:54,683 INFO L232 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 78.34% of their original sizes. [2018-10-24 21:43:54,683 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:32,374 INFO L413 sIntCurrentIteration]: We have 361 unified AI predicates [2018-10-24 21:44:32,374 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:32,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:32,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-10-24 21:44:32,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:32,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 21:44:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 21:44:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2018-10-24 21:44:32,378 INFO L87 Difference]: Start difference. First operand 1916 states and 2859 transitions. Second operand 25 states. Received shutdown request... [2018-10-24 21:46:43,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 21:46:43,057 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:46:43,062 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:46:43,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:46:43 BoogieIcfgContainer [2018-10-24 21:46:43,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:46:43,063 INFO L168 Benchmark]: Toolchain (without parser) took 237561.41 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 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,064 INFO L168 Benchmark]: CDTParser took 0.19 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 21:46:43,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 942.17 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,066 INFO L168 Benchmark]: Boogie Preprocessor took 104.06 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,067 INFO L168 Benchmark]: RCFGBuilder took 3744.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,068 INFO L168 Benchmark]: TraceAbstraction took 232560.11 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -928.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:43,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 942.17 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.06 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3744.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232560.11 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -928.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (1916states) and FLOYD_HOARE automaton (currently 22 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (3480 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 165.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1034 SDtfs, 4275 SDslu, 589 SDs, 0 SdLazy, 6151 SolverSat, 1147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 672 GetRequests, 576 SyntacticMatches, 43 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 43.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961635155734533 AbsIntWeakeningRatio, 0.09105180533751962 AbsIntAvgWeakeningVarsNumRemoved, 454.68131868131866 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 954 NumberOfCodeBlocks, 954 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 949 ConstructedInterpolants, 0 QuantifiedInterpolants, 3153139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 425/655 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown