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/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:03:15,676 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:03:15,678 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:03:15,699 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:03:15,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:03:15,701 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:03:15,702 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:03:15,704 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:03:15,705 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:03:15,706 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:03:15,707 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:03:15,708 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:03:15,709 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:03:15,710 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:03:15,711 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:03:15,711 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:03:15,712 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:03:15,714 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:03:15,716 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:03:15,718 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:03:15,719 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:03:15,720 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:03:15,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:03:15,742 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 01:03:15,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:03:15,768 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:03:15,769 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:03:15,769 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:03:15,769 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:03:15,769 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:03:15,770 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:03:15,771 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:03:15,771 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:03:15,771 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:03:15,771 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:03:15,772 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:03:15,773 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:03:15,773 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:03:15,773 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:03:15,773 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:03:15,773 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:03:15,774 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:03:15,774 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:03:15,774 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:03:15,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:03:15,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:03:15,775 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:03:15,776 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:03:15,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:03:15,776 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:03:15,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:03:15,778 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:03:15,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:03:15,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:03:15,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:03:15,779 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:03:15,779 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:03:15,779 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:03:15,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:03:15,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:03:15,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:03:15,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:03:15,867 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:03:15,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-24 01:03:15,932 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc024911d/2167b4fc562d47a2bb788008df26c6fa/FLAGacd42f077 [2018-10-24 01:03:16,534 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:03:16,535 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-10-24 01:03:16,558 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc024911d/2167b4fc562d47a2bb788008df26c6fa/FLAGacd42f077 [2018-10-24 01:03:16,582 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc024911d/2167b4fc562d47a2bb788008df26c6fa [2018-10-24 01:03:16,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:03:16,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:03:16,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:03:16,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:03:16,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:03:16,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:16" (1/1) ... [2018-10-24 01:03:16,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387416d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:16, skipping insertion in model container [2018-10-24 01:03:16,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:16" (1/1) ... [2018-10-24 01:03:16,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:03:16,718 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:03:17,292 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:03:17,296 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:03:17,467 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:03:17,495 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:03:17,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17 WrapperNode [2018-10-24 01:03:17,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:03:17,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:03:17,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:03:17,497 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:03:17,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:03:17,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:03:17,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:03:17,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:03:17,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (1/1) ... [2018-10-24 01:03:17,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:03:17,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:03:17,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:03:17,899 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:03:17,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (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 01:03:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:03:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:03:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:03:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:03:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:03:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:03:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:03:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:03:22,665 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:03:22,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:22 BoogieIcfgContainer [2018-10-24 01:03:22,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:03:22,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:03:22,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:03:22,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:03:22,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:03:16" (1/3) ... [2018-10-24 01:03:22,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103b9992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:22, skipping insertion in model container [2018-10-24 01:03:22,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:17" (2/3) ... [2018-10-24 01:03:22,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103b9992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:22, skipping insertion in model container [2018-10-24 01:03:22,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:22" (3/3) ... [2018-10-24 01:03:22,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-10-24 01:03:22,683 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:03:22,691 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:03:22,709 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:03:22,747 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:03:22,747 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:03:22,747 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:03:22,748 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:03:22,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:03:22,748 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:03:22,748 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:03:22,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:03:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 01:03:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 01:03:22,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:03:22,789 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:03:22,792 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:03:22,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:03:22,797 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-10-24 01:03:22,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:03:22,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:22,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:03:22,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:22,855 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:03:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:03:23,376 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 01:03:23,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:03:23,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:03:23,379 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:03:23,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:03:23,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:03:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:03:23,406 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 01:03:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:03:26,489 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 01:03:26,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:03:26,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 01:03:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:03:26,529 INFO L225 Difference]: With dead ends: 985 [2018-10-24 01:03:26,529 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 01:03:26,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:03:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 01:03:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 01:03:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 01:03:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 01:03:26,640 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-10-24 01:03:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:03:26,640 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 01:03:26,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:03:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 01:03:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 01:03:26,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:03:26,652 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:03:26,652 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:03:26,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:03:26,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-10-24 01:03:26,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:03:26,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:26,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:03:26,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:26,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:03:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:03:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:03:27,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:03:27,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:03:27,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:03:27,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:03:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:03:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:03:27,013 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 01:03:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:03:32,415 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-24 01:03:32,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:03:32,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 01:03:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:03:32,437 INFO L225 Difference]: With dead ends: 2339 [2018-10-24 01:03:32,437 INFO L226 Difference]: Without dead ends: 1659 [2018-10-24 01:03:32,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:03:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-24 01:03:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-10-24 01:03:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-10-24 01:03:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-10-24 01:03:32,535 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 131 [2018-10-24 01:03:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:03:32,539 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-10-24 01:03:32,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:03:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-10-24 01:03:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 01:03:32,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:03:32,554 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:03:32,554 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:03:32,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:03:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-10-24 01:03:32,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:03:32,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:32,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:03:32,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:32,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:03:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:03:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:03:32,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:03:32,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:03:32,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:03:32,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:03:32,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:03:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:03:32,839 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 4 states. [2018-10-24 01:03:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:03:35,629 INFO L93 Difference]: Finished difference Result 6013 states and 9035 transitions. [2018-10-24 01:03:35,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:03:35,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-10-24 01:03:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:03:35,666 INFO L225 Difference]: With dead ends: 6013 [2018-10-24 01:03:35,667 INFO L226 Difference]: Without dead ends: 4377 [2018-10-24 01:03:35,680 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 01:03:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-10-24 01:03:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-10-24 01:03:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-10-24 01:03:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6089 transitions. [2018-10-24 01:03:35,832 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6089 transitions. Word has length 182 [2018-10-24 01:03:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:03:35,833 INFO L481 AbstractCegarLoop]: Abstraction has 4354 states and 6089 transitions. [2018-10-24 01:03:35,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:03:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6089 transitions. [2018-10-24 01:03:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 01:03:35,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:03:35,845 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:03:35,845 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:03:35,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:03:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-10-24 01:03:35,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:03:35,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:35,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:03:35,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:03:35,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:03:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:03:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:03:36,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:03:36,165 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:03:36,166 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-24 01:03:36,168 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [506], [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], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:03:36,238 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:03:36,239 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:03:38,039 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:03:39,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:03:39,661 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 01:03:39,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:03:39,681 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:03:42,284 INFO L232 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 73.63% of their original sizes. [2018-10-24 01:03:42,284 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:03:42,779 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:03:42,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:03:42,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:03:42,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:03:42,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:03:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:03:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:03:42,782 INFO L87 Difference]: Start difference. First operand 4354 states and 6089 transitions. Second operand 7 states. [2018-10-24 01:04:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:04:07,177 INFO L93 Difference]: Finished difference Result 8894 states and 12396 transitions. [2018-10-24 01:04:07,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:04:07,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-10-24 01:04:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:04:07,202 INFO L225 Difference]: With dead ends: 8894 [2018-10-24 01:04:07,203 INFO L226 Difference]: Without dead ends: 4546 [2018-10-24 01:04:07,218 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 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 01:04:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-10-24 01:04:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-10-24 01:04:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-10-24 01:04:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6289 transitions. [2018-10-24 01:04:07,334 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6289 transitions. Word has length 226 [2018-10-24 01:04:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:04:07,335 INFO L481 AbstractCegarLoop]: Abstraction has 4544 states and 6289 transitions. [2018-10-24 01:04:07,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:04:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6289 transitions. [2018-10-24 01:04:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-24 01:04:07,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:04:07,349 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:04:07,349 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:04:07,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:04:07,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-10-24 01:04:07,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:04:07,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:04:07,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:04:07,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:04:07,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:04:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:04:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-24 01:04:07,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:04:07,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:04:07,636 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:04:07,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:04:07,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:04:07,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:04:07,638 INFO L87 Difference]: Start difference. First operand 4544 states and 6289 transitions. Second operand 3 states. [2018-10-24 01:04:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:04:11,131 INFO L93 Difference]: Finished difference Result 10607 states and 15170 transitions. [2018-10-24 01:04:11,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:04:11,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-10-24 01:04:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:04:11,161 INFO L225 Difference]: With dead ends: 10607 [2018-10-24 01:04:11,162 INFO L226 Difference]: Without dead ends: 6259 [2018-10-24 01:04:11,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:04:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2018-10-24 01:04:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6259. [2018-10-24 01:04:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6259 states. [2018-10-24 01:04:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8415 transitions. [2018-10-24 01:04:11,328 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 8415 transitions. Word has length 320 [2018-10-24 01:04:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:04:11,329 INFO L481 AbstractCegarLoop]: Abstraction has 6259 states and 8415 transitions. [2018-10-24 01:04:11,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:04:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 8415 transitions. [2018-10-24 01:04:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-24 01:04:11,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:04:11,347 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:11,347 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:04:11,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:04:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-10-24 01:04:11,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:04:11,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:04:11,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:04:11,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:04:11,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:04:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:04:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 01:04:11,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:04:11,896 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:04:11,897 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-10-24 01:04:11,897 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:04:11,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:04:11,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:04:13,705 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:04:25,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:04:25,997 INFO L272 AbstractInterpreter]: Visited 126 different actions 365 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:04:26,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:04:26,005 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:04:31,274 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.87% of their original sizes. [2018-10-24 01:04:31,274 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:04:42,535 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:04:42,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:04:42,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 01:04:42,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:04:42,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:04:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:04:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:04:42,537 INFO L87 Difference]: Start difference. First operand 6259 states and 8415 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:07:19,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 01:07:19,226 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:07:19,233 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:07:19,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:07:19 BoogieIcfgContainer [2018-10-24 01:07:19,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:07:19,234 INFO L168 Benchmark]: Toolchain (without parser) took 242638.04 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:07:19,237 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:07:19,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 896.68 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:07:19,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:07:19,239 INFO L168 Benchmark]: Boogie Preprocessor took 117.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:07:19,240 INFO L168 Benchmark]: RCFGBuilder took 4767.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.6 MB). Peak memory consumption was 188.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:07:19,240 INFO L168 Benchmark]: TraceAbstraction took 236566.23 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -933.7 MB). Peak memory consumption was 949.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:07:19,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 896.68 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 283.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4767.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.6 MB). Peak memory consumption was 188.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236566.23 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -933.7 MB). Peak memory consumption was 949.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (6259states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1222 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 196.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1316 SDtfs, 3840 SDslu, 742 SDs, 0 SdLazy, 6782 SolverSat, 1228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 608 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6259occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961922184625827 AbsIntWeakeningRatio, 0.10918544194107452 AbsIntAvgWeakeningVarsNumRemoved, 576.4558058925477 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 749252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 797/867 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown