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/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:05:10,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:05:10,586 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:05:10,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:05:10,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:05:10,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:05:10,605 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:05:10,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:05:10,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:05:10,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:05:10,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:05:10,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:05:10,617 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:05:10,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:05:10,631 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:05:10,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:05:10,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:05:10,639 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:05:10,641 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:05:10,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:05:10,643 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:05:10,644 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:05:10,646 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:05:10,654 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 12:05:10,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:05:10,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:05:10,671 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:05:10,671 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:05:10,671 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:05:10,671 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:05:10,672 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:05:10,672 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:05:10,672 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:05:10,672 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:05:10,672 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:05:10,673 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:05:10,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:05:10,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:05:10,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:05:10,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:05:10,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:05:10,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:05:10,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:05:10,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:05:10,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:05:10,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:05:10,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:05:10,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:05:10,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:05:10,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:05:10,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:05:10,676 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:05:10,676 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:05:10,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:05:10,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:05:10,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:05:10,677 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:05:10,677 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:05:10,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:05:10,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:05:10,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:05:10,747 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:05:10,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:05:10,749 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-24 12:05:10,826 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4c0aa85b/f5c60e5a13784050a74762682937d7bb/FLAG66ed4c50d [2018-10-24 12:05:11,365 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:05:11,366 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-24 12:05:11,374 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4c0aa85b/f5c60e5a13784050a74762682937d7bb/FLAG66ed4c50d [2018-10-24 12:05:11,396 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4c0aa85b/f5c60e5a13784050a74762682937d7bb [2018-10-24 12:05:11,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:05:11,420 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:05:11,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:11,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:05:11,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:05:11,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c7f590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11, skipping insertion in model container [2018-10-24 12:05:11,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:05:11,475 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:05:11,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:11,703 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:05:11,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:11,788 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:05:11,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11 WrapperNode [2018-10-24 12:05:11,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:11,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:11,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:05:11,790 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:05:11,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:11,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:05:11,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:05:11,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:05:11,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (1/1) ... [2018-10-24 12:05:11,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:05:11,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:05:11,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:05:11,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:05:11,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (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 12:05:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:05:12,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:05:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2018-10-24 12:05:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2018-10-24 12:05:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:05:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:05:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:05:12,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:05:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:05:12,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:05:12,678 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:05:12,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:12 BoogieIcfgContainer [2018-10-24 12:05:12,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:05:12,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:05:12,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:05:12,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:05:12,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:05:11" (1/3) ... [2018-10-24 12:05:12,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d13e97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:12, skipping insertion in model container [2018-10-24 12:05:12,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:11" (2/3) ... [2018-10-24 12:05:12,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d13e97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:12, skipping insertion in model container [2018-10-24 12:05:12,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:12" (3/3) ... [2018-10-24 12:05:12,688 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-24 12:05:12,698 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:05:12,707 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:05:12,725 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:05:12,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:05:12,761 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:05:12,761 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:05:12,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:05:12,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:05:12,762 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:05:12,762 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:05:12,762 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:05:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-10-24 12:05:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 12:05:12,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:12,792 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:05:12,795 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:12,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1430162208, now seen corresponding path program 1 times [2018-10-24 12:05:12,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:12,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:12,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:12,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:12,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:12,987 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 12:05:12,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:12,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:05:12,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:12,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:05:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:05:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:05:13,016 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-10-24 12:05:13,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:13,044 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2018-10-24 12:05:13,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:05:13,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-10-24 12:05:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:13,057 INFO L225 Difference]: With dead ends: 87 [2018-10-24 12:05:13,057 INFO L226 Difference]: Without dead ends: 40 [2018-10-24 12:05:13,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:05:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-24 12:05:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-24 12:05:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-24 12:05:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2018-10-24 12:05:13,107 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 24 [2018-10-24 12:05:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:13,107 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2018-10-24 12:05:13,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:05:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2018-10-24 12:05:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 12:05:13,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:13,109 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] [2018-10-24 12:05:13,110 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:13,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash 681592423, now seen corresponding path program 1 times [2018-10-24 12:05:13,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:13,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:13,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:13,226 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 12:05:13,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:13,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 12:05:13,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:13,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 12:05:13,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 12:05:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 12:05:13,231 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 3 states. [2018-10-24 12:05:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:13,329 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2018-10-24 12:05:13,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 12:05:13,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-24 12:05:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:13,331 INFO L225 Difference]: With dead ends: 72 [2018-10-24 12:05:13,331 INFO L226 Difference]: Without dead ends: 41 [2018-10-24 12:05:13,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 12:05:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-24 12:05:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-24 12:05:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-24 12:05:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-10-24 12:05:13,349 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 30 [2018-10-24 12:05:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:13,349 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-10-24 12:05:13,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 12:05:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-10-24 12:05:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 12:05:13,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:13,353 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] [2018-10-24 12:05:13,353 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:13,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:13,353 INFO L82 PathProgramCache]: Analyzing trace with hash -906755479, now seen corresponding path program 1 times [2018-10-24 12:05:13,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:13,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:13,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:13,584 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 12:05:13,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:13,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:05:13,585 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:13,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:05:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:05:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:05:13,586 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 5 states. [2018-10-24 12:05:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:13,937 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2018-10-24 12:05:13,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:05:13,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-10-24 12:05:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:13,948 INFO L225 Difference]: With dead ends: 100 [2018-10-24 12:05:13,948 INFO L226 Difference]: Without dead ends: 68 [2018-10-24 12:05:13,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:05:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-24 12:05:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2018-10-24 12:05:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-24 12:05:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2018-10-24 12:05:13,972 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 30 [2018-10-24 12:05:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:13,972 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2018-10-24 12:05:13,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:05:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2018-10-24 12:05:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 12:05:13,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:13,975 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] [2018-10-24 12:05:13,976 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:13,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash 925510185, now seen corresponding path program 1 times [2018-10-24 12:05:13,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:13,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:13,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:14,212 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 12:05:14,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:14,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 12:05:14,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:14,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 12:05:14,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 12:05:14,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:05:14,215 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 6 states. [2018-10-24 12:05:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:14,627 INFO L93 Difference]: Finished difference Result 158 states and 206 transitions. [2018-10-24 12:05:14,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:05:14,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-10-24 12:05:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:14,629 INFO L225 Difference]: With dead ends: 158 [2018-10-24 12:05:14,630 INFO L226 Difference]: Without dead ends: 89 [2018-10-24 12:05:14,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:05:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-24 12:05:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 58. [2018-10-24 12:05:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-24 12:05:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2018-10-24 12:05:14,640 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 30 [2018-10-24 12:05:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:14,640 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2018-10-24 12:05:14,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 12:05:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2018-10-24 12:05:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 12:05:14,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:14,642 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] [2018-10-24 12:05:14,643 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:14,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:14,643 INFO L82 PathProgramCache]: Analyzing trace with hash -85607065, now seen corresponding path program 1 times [2018-10-24 12:05:14,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:14,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:14,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:14,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:14,645 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:14,778 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 12:05:14,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:14,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:05:14,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:14,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:05:14,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:05:14,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:05:14,780 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand 5 states. [2018-10-24 12:05:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:15,369 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2018-10-24 12:05:15,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:05:15,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-10-24 12:05:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:15,375 INFO L225 Difference]: With dead ends: 136 [2018-10-24 12:05:15,375 INFO L226 Difference]: Without dead ends: 69 [2018-10-24 12:05:15,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:05:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-24 12:05:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2018-10-24 12:05:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-24 12:05:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-10-24 12:05:15,383 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 30 [2018-10-24 12:05:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:15,384 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-10-24 12:05:15,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:05:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2018-10-24 12:05:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 12:05:15,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:15,385 INFO L375 BasicCegarLoop]: trace histogram [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 12:05:15,386 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:15,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1176159658, now seen corresponding path program 1 times [2018-10-24 12:05:15,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:15,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:15,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:15,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:15,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:05:15,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:15,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 12:05:15,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:15,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:05:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:05:15,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:05:15,580 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2018-10-24 12:05:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:15,836 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2018-10-24 12:05:15,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:05:15,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-10-24 12:05:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:15,840 INFO L225 Difference]: With dead ends: 160 [2018-10-24 12:05:15,840 INFO L226 Difference]: Without dead ends: 109 [2018-10-24 12:05:15,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:05:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-24 12:05:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2018-10-24 12:05:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-24 12:05:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2018-10-24 12:05:15,852 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 35 [2018-10-24 12:05:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:15,853 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2018-10-24 12:05:15,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:05:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2018-10-24 12:05:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 12:05:15,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:15,854 INFO L375 BasicCegarLoop]: trace histogram [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 12:05:15,855 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:15,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash 165042408, now seen corresponding path program 1 times [2018-10-24 12:05:15,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:15,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:15,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:05:16,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:16,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 12:05:16,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:16,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:05:16,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:05:16,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:05:16,010 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 7 states. [2018-10-24 12:05:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:16,435 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2018-10-24 12:05:16,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:05:16,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-10-24 12:05:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:16,437 INFO L225 Difference]: With dead ends: 112 [2018-10-24 12:05:16,437 INFO L226 Difference]: Without dead ends: 110 [2018-10-24 12:05:16,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:05:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-24 12:05:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2018-10-24 12:05:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-24 12:05:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2018-10-24 12:05:16,459 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 35 [2018-10-24 12:05:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:16,459 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2018-10-24 12:05:16,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:05:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2018-10-24 12:05:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 12:05:16,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:16,461 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:16,461 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:16,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash -52520849, now seen corresponding path program 1 times [2018-10-24 12:05:16,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:16,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:16,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:16,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:16,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:05:16,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:16,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 12:05:16,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:16,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:05:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:05:16,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:05:16,624 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand 4 states. [2018-10-24 12:05:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:16,675 INFO L93 Difference]: Finished difference Result 159 states and 203 transitions. [2018-10-24 12:05:16,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:05:16,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 12:05:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:16,678 INFO L225 Difference]: With dead ends: 159 [2018-10-24 12:05:16,679 INFO L226 Difference]: Without dead ends: 109 [2018-10-24 12:05:16,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:05:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-24 12:05:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-24 12:05:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-24 12:05:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2018-10-24 12:05:16,690 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 136 transitions. Word has length 37 [2018-10-24 12:05:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:16,691 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 136 transitions. [2018-10-24 12:05:16,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:05:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 136 transitions. [2018-10-24 12:05:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 12:05:16,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:16,694 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:16,695 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:16,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash 648543729, now seen corresponding path program 1 times [2018-10-24 12:05:16,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:16,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:16,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:16,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:16,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:17,380 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-10-24 12:05:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:17,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:17,386 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:05:17,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-10-24 12:05:17,389 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [22], [26], [32], [35], [39], [43], [45], [48], [53], [55], [61], [67], [70], [76], [82], [89], [91], [93], [98], [104], [105], [109], [113], [116], [118], [124], [126], [127], [128], [130] [2018-10-24 12:05:17,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:05:17,446 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:05:30,175 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:05:30,176 INFO L272 AbstractInterpreter]: Visited 36 different actions 960 times. Merged at 23 different actions 793 times. Widened at 3 different actions 94 times. Found 2 fixpoints after 2 different actions. Largest state had 53 variables. [2018-10-24 12:05:30,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:30,210 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:05:30,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:30,211 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:05:30,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:30,228 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:05:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:30,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:05:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:30,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:05:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:30,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:05:30,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2018-10-24 12:05:30,792 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:05:30,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 12:05:30,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 12:05:30,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 12:05:30,794 INFO L87 Difference]: Start difference. First operand 109 states and 136 transitions. Second operand 8 states. [2018-10-24 12:05:31,700 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 12:05:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:32,268 INFO L93 Difference]: Finished difference Result 228 states and 285 transitions. [2018-10-24 12:05:32,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 12:05:32,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-10-24 12:05:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:32,270 INFO L225 Difference]: With dead ends: 228 [2018-10-24 12:05:32,270 INFO L226 Difference]: Without dead ends: 139 [2018-10-24 12:05:32,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:05:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-24 12:05:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2018-10-24 12:05:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-24 12:05:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2018-10-24 12:05:32,280 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2018-10-24 12:05:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:32,280 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2018-10-24 12:05:32,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 12:05:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2018-10-24 12:05:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 12:05:32,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:32,282 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:32,282 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:32,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:32,283 INFO L82 PathProgramCache]: Analyzing trace with hash 408592208, now seen corresponding path program 2 times [2018-10-24 12:05:32,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:32,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:32,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:32,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:32,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:32,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:32,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:05:32,633 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:05:32,633 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:05:32,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:32,634 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:05:32,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:05:32,648 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:05:32,738 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:05:32,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:05:32,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:05:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:33,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:05:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:33,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:05:33,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2018-10-24 12:05:33,436 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:05:33,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 12:05:33,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 12:05:33,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:05:33,438 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 16 states. [2018-10-24 12:05:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:34,072 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2018-10-24 12:05:34,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 12:05:34,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-24 12:05:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:34,075 INFO L225 Difference]: With dead ends: 236 [2018-10-24 12:05:34,075 INFO L226 Difference]: Without dead ends: 183 [2018-10-24 12:05:34,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2018-10-24 12:05:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-24 12:05:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 137. [2018-10-24 12:05:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-24 12:05:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2018-10-24 12:05:34,090 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 42 [2018-10-24 12:05:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:34,090 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2018-10-24 12:05:34,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 12:05:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2018-10-24 12:05:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 12:05:34,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:34,092 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:34,093 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:34,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:34,093 INFO L82 PathProgramCache]: Analyzing trace with hash 465850510, now seen corresponding path program 1 times [2018-10-24 12:05:34,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:34,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:34,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:05:34,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:34,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:34,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:34,354 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:05:34,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-10-24 12:05:34,355 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [22], [26], [32], [35], [39], [43], [45], [48], [53], [55], [61], [67], [70], [78], [82], [89], [91], [93], [98], [104], [105], [109], [113], [116], [118], [124], [126], [127], [128], [130] [2018-10-24 12:05:34,358 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:05:34,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:05:45,117 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:05:45,118 INFO L272 AbstractInterpreter]: Visited 36 different actions 964 times. Merged at 23 different actions 794 times. Widened at 3 different actions 94 times. Found 2 fixpoints after 2 different actions. Largest state had 52 variables. [2018-10-24 12:05:45,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:45,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:05:45,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:45,126 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:05:45,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:45,135 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:05:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:45,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:05:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:45,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:05:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:45,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:05:45,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2018-10-24 12:05:45,647 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:05:45,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 12:05:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 12:05:45,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:05:45,648 INFO L87 Difference]: Start difference. First operand 137 states and 167 transitions. Second operand 16 states. [2018-10-24 12:05:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:46,069 INFO L93 Difference]: Finished difference Result 192 states and 229 transitions. [2018-10-24 12:05:46,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 12:05:46,070 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-24 12:05:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:46,072 INFO L225 Difference]: With dead ends: 192 [2018-10-24 12:05:46,072 INFO L226 Difference]: Without dead ends: 190 [2018-10-24 12:05:46,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2018-10-24 12:05:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-24 12:05:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2018-10-24 12:05:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-24 12:05:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2018-10-24 12:05:46,082 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 42 [2018-10-24 12:05:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:46,082 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2018-10-24 12:05:46,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 12:05:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2018-10-24 12:05:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 12:05:46,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:46,084 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:46,084 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:46,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:46,085 INFO L82 PathProgramCache]: Analyzing trace with hash -612476146, now seen corresponding path program 1 times [2018-10-24 12:05:46,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:46,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:46,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:46,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:46,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:46,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:46,492 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:05:46,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-10-24 12:05:46,493 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [22], [26], [32], [37], [39], [43], [45], [48], [53], [55], [61], [67], [70], [76], [82], [89], [91], [93], [98], [104], [105], [109], [113], [116], [118], [124], [126], [127], [128], [130] [2018-10-24 12:05:46,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:05:46,496 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:05:55,084 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:05:55,084 INFO L272 AbstractInterpreter]: Visited 36 different actions 964 times. Merged at 23 different actions 794 times. Widened at 3 different actions 94 times. Found 2 fixpoints after 2 different actions. Largest state had 52 variables. [2018-10-24 12:05:55,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:55,092 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:05:55,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:05:55,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:05:55,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:55,101 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:05:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:55,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:05:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:55,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:05:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:55,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:05:55,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2018-10-24 12:05:55,847 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:05:55,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 12:05:55,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 12:05:55,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:05:55,849 INFO L87 Difference]: Start difference. First operand 137 states and 167 transitions. Second operand 16 states. [2018-10-24 12:05:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:56,305 INFO L93 Difference]: Finished difference Result 211 states and 255 transitions. [2018-10-24 12:05:56,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 12:05:56,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-24 12:05:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:56,308 INFO L225 Difference]: With dead ends: 211 [2018-10-24 12:05:56,309 INFO L226 Difference]: Without dead ends: 209 [2018-10-24 12:05:56,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2018-10-24 12:05:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-24 12:05:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 158. [2018-10-24 12:05:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-24 12:05:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 198 transitions. [2018-10-24 12:05:56,320 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 198 transitions. Word has length 42 [2018-10-24 12:05:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:56,320 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 198 transitions. [2018-10-24 12:05:56,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 12:05:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 198 transitions. [2018-10-24 12:05:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 12:05:56,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:56,322 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:05:56,322 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:56,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash -555217844, now seen corresponding path program 1 times [2018-10-24 12:05:56,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:56,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:56,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:56,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:56,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:56,380 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:05:56,399 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,400 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,401 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,401 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,401 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,402 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,402 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,402 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,403 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,403 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,403 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,404 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,404 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,404 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,405 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,405 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,405 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,406 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,406 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,406 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,407 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,407 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,408 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,408 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,408 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,408 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,409 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,409 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,409 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,411 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,411 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,411 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,411 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,412 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,412 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,412 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,413 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,413 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,413 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,413 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,415 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,415 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,415 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,416 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,416 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,416 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,416 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,417 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,417 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,417 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,418 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,418 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,418 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,419 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,422 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,422 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,423 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,423 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,423 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,424 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,424 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:05:56,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:05:56 BoogieIcfgContainer [2018-10-24 12:05:56,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:05:56,467 INFO L168 Benchmark]: Toolchain (without parser) took 45051.28 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 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 830.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:56,468 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:05:56,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.96 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:56,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:05:56,471 INFO L168 Benchmark]: Boogie Preprocessor took 38.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:05:56,473 INFO L168 Benchmark]: RCFGBuilder took 797.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 698.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -729.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:56,474 INFO L168 Benchmark]: TraceAbstraction took 43784.96 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 847.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:56,482 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.96 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 797.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 698.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -729.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43784.96 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 847.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] CALL char A [2 + 2 + 4 +1]; [L75] RET char A [2 + 2 + 4 +1]; [L76] CALL A[2 + 2 + 4] = 0 [L76] RET A[2 + 2 + 4] = 0 [L77] CALL parse_expression_list (A) [L49] int start=0, i=-1, j=-1; [L50] CALL char str2[2]; [L50] RET char str2[2]; [L51] COND FALSE !(!str) [L53] i++ [L54] CALL str[i] [L54] RET str[i] [L55] case 0: [L70] CALL, EXPR str[i] [L70] RET, EXPR str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] CALL str[i] [L54] RET str[i] [L55] case 0: [L70] CALL, EXPR str[i] [L70] RET, EXPR str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] CALL str[i] [L54] RET str[i] [L55] case 0: [L56] CALL, EXPR str[start] [L56] RET, EXPR str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] CALL, EXPR str[start] [L56] RET, EXPR str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L57] CALL, EXPR str[start] [L57] RET, EXPR str[start] [L57] COND FALSE !(str[start] == '"') [L58] j = i-1 [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] CALL, EXPR str[j] [L59] RET, EXPR str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] CALL, EXPR str[j] [L59] RET, EXPR str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L60] (0 < j) && (str[j] == '"') [L60] CALL, EXPR str[j] [L60] RET, EXPR str[j] [L60] (0 < j) && (str[j] == '"') [L60] COND FALSE !((0 < j) && (str[j] == '"')) [L61] COND TRUE start<=j [L62] FCALL r_strncpy(str2, str+start, j-start+1) [L63] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 43.7s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 574 SDtfs, 1075 SDslu, 1966 SDs, 0 SdLazy, 1362 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 434 GetRequests, 300 SyntacticMatches, 13 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 32.1s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 288 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 720 ConstructedInterpolants, 0 QuantifiedInterpolants, 99703 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1005 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 6/93 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...