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/string_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:55:33,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:55:33,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:55:33,632 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:55:33,633 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:55:33,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:55:33,636 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:55:33,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:55:33,639 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:55:33,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:55:33,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:55:33,642 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:55:33,643 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:55:33,644 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:55:33,645 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:55:33,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:55:33,647 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:55:33,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:55:33,651 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:55:33,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:55:33,654 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:55:33,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:55:33,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:55:33,667 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 [2018-10-22 15:55:33,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:55:33,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:55:33,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:55:33,685 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 15:55:33,685 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 15:55:33,685 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 15:55:33,685 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 15:55:33,686 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 15:55:33,686 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 15:55:33,686 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 15:55:33,686 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 15:55:33,686 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 15:55:33,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:55:33,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:55:33,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:55:33,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:55:33,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:55:33,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:55:33,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:55:33,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:55:33,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:55:33,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:55:33,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:55:33,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:55:33,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:55:33,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:55:33,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:55:33,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:55:33,691 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 15:55:33,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:55:33,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:55:33,691 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:55:33,692 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:55:33,692 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 15:55:33,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:55:33,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:55:33,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:55:33,757 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:55:33,757 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:55:33,758 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/string_false-unreach-call_true-termination.i [2018-10-22 15:55:33,835 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3692d67d/2e6e29110efe4e7faabe5314c5c18702/FLAGa7ec0fcc6 [2018-10-22 15:55:34,335 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:55:34,336 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string_false-unreach-call_true-termination.i [2018-10-22 15:55:34,349 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3692d67d/2e6e29110efe4e7faabe5314c5c18702/FLAGa7ec0fcc6 [2018-10-22 15:55:34,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3692d67d/2e6e29110efe4e7faabe5314c5c18702 [2018-10-22 15:55:34,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:55:34,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:55:34,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:55:34,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:55:34,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:55:34,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3502ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34, skipping insertion in model container [2018-10-22 15:55:34,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:55:34,425 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:55:34,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:55:34,620 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:55:34,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:55:34,672 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:55:34,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34 WrapperNode [2018-10-22 15:55:34,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:55:34,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:55:34,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:55:34,674 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:55:34,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:55:34,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:55:34,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:55:34,729 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:55:34,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (1/1) ... [2018-10-22 15:55:34,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:55:34,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:55:34,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:55:34,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:55:34,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (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 [2018-10-22 15:55:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 15:55:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 15:55:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:55:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:55:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 15:55:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 15:55:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:55:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:55:35,468 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:55:35,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:55:35 BoogieIcfgContainer [2018-10-22 15:55:35,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:55:35,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:55:35,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:55:35,474 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:55:35,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:55:34" (1/3) ... [2018-10-22 15:55:35,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed3d601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:55:35, skipping insertion in model container [2018-10-22 15:55:35,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:34" (2/3) ... [2018-10-22 15:55:35,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed3d601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:55:35, skipping insertion in model container [2018-10-22 15:55:35,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:55:35" (3/3) ... [2018-10-22 15:55:35,478 INFO L112 eAbstractionObserver]: Analyzing ICFG string_false-unreach-call_true-termination.i [2018-10-22 15:55:35,487 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:55:35,499 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:55:35,519 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:55:35,551 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:55:35,551 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:55:35,552 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:55:35,552 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:55:35,552 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:55:35,552 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:55:35,552 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:55:35,552 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:55:35,552 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:55:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-10-22 15:55:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:55:35,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:35,579 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] [2018-10-22 15:55:35,582 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:35,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1091547452, now seen corresponding path program 1 times [2018-10-22 15:55:35,592 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:35,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:35,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:35,642 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:55:35,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:55:35,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:55:35,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:55:35,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:55:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:55:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:55:35,770 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-10-22 15:55:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:35,797 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2018-10-22 15:55:35,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:55:35,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-22 15:55:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:35,809 INFO L225 Difference]: With dead ends: 71 [2018-10-22 15:55:35,809 INFO L226 Difference]: Without dead ends: 33 [2018-10-22 15:55:35,813 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 [2018-10-22 15:55:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-22 15:55:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-22 15:55:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-22 15:55:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-10-22 15:55:35,860 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 22 [2018-10-22 15:55:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:35,861 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-10-22 15:55:35,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:55:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-10-22 15:55:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-22 15:55:35,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:35,864 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] [2018-10-22 15:55:35,864 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:35,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash 499356089, now seen corresponding path program 1 times [2018-10-22 15:55:35,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:35,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:35,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:35,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:35,868 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:55:36,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:55:36,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:55:36,024 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:55:36,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:55:36,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:55:36,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:55:36,032 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2018-10-22 15:55:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:36,213 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2018-10-22 15:55:36,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:55:36,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-22 15:55:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:36,218 INFO L225 Difference]: With dead ends: 68 [2018-10-22 15:55:36,218 INFO L226 Difference]: Without dead ends: 44 [2018-10-22 15:55:36,219 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 [2018-10-22 15:55:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-22 15:55:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2018-10-22 15:55:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-22 15:55:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-10-22 15:55:36,228 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2018-10-22 15:55:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:36,228 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-10-22 15:55:36,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:55:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-10-22 15:55:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-22 15:55:36,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:36,230 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-22 15:55:36,230 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:36,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:36,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1017977548, now seen corresponding path program 1 times [2018-10-22 15:55:36,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:36,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:36,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:36,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:36,233 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:55:36,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:36,398 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:55:36,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-10-22 15:55:36,401 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [16], [20], [24], [28], [31], [33], [35], [39], [43], [47], [49], [52], [58], [62], [64], [67], [76], [80], [84], [96], [100], [103], [105], [111], [112], [113], [115] [2018-10-22 15:55:36,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 15:55:36,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 15:55:37,699 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 15:55:37,701 INFO L272 AbstractInterpreter]: Visited 33 different actions 73 times. Merged at 6 different actions 30 times. Widened at 2 different actions 2 times. Found 2 fixpoints after 2 different actions. Largest state had 41 variables. [2018-10-22 15:55:37,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:37,751 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 15:55:37,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:37,752 INFO L197 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 [2018-10-22 15:55:37,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:37,767 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 15:55:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:37,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:55:37,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:55:38,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:38,041 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:55:38,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:38,069 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 15:55:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:38,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:55:38,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-10-22 15:55:38,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:55:38,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 7 [2018-10-22 15:55:38,238 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:55:38,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:55:38,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:55:38,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:55:38,242 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2018-10-22 15:55:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:38,540 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2018-10-22 15:55:38,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:55:38,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-10-22 15:55:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:38,546 INFO L225 Difference]: With dead ends: 81 [2018-10-22 15:55:38,546 INFO L226 Difference]: Without dead ends: 55 [2018-10-22 15:55:38,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:55:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-22 15:55:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2018-10-22 15:55:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-22 15:55:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-10-22 15:55:38,555 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 35 [2018-10-22 15:55:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:38,555 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-10-22 15:55:38,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:55:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-10-22 15:55:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-22 15:55:38,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:38,557 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:55:38,557 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:38,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -520435943, now seen corresponding path program 2 times [2018-10-22 15:55:38,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:38,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:38,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:38,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:38,560 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:55:38,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:38,699 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:55:38,699 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 15:55:38,700 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 15:55:38,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:38,700 INFO L197 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 [2018-10-22 15:55:38,720 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:55:38,720 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 15:55:38,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:55:38,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:38,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:55:38,857 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:55:38,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:38,934 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:55:38,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:55:38,951 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 15:55:39,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:55:39,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:39,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:55:39,073 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:55:39,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:55:39,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-10-22 15:55:39,158 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:55:39,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:55:39,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:55:39,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:39,159 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 6 states. [2018-10-22 15:55:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:39,572 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2018-10-22 15:55:39,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:55:39,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-10-22 15:55:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:39,574 INFO L225 Difference]: With dead ends: 95 [2018-10-22 15:55:39,574 INFO L226 Difference]: Without dead ends: 66 [2018-10-22 15:55:39,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-22 15:55:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2018-10-22 15:55:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-22 15:55:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-10-22 15:55:39,583 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 41 [2018-10-22 15:55:39,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:39,583 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-10-22 15:55:39,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:55:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-10-22 15:55:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-22 15:55:39,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:39,586 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:55:39,586 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:39,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:39,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1254758996, now seen corresponding path program 3 times [2018-10-22 15:55:39,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:39,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:39,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:55:39,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:39,589 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:55:39,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:39,729 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:55:39,729 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 15:55:39,730 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 15:55:39,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:39,730 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:55:39,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:55:39,744 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 15:55:39,840 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-22 15:55:39,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:39,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:55:39,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:55:40,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:40,256 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:55:40,272 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:55:40,272 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 15:55:40,474 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-22 15:55:40,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:40,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:55:40,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:55:40,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:55:40,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 8 [2018-10-22 15:55:40,556 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:55:40,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:55:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:55:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:40,558 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 7 states. [2018-10-22 15:55:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:40,732 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2018-10-22 15:55:40,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:55:40,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-22 15:55:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:40,735 INFO L225 Difference]: With dead ends: 109 [2018-10-22 15:55:40,735 INFO L226 Difference]: Without dead ends: 77 [2018-10-22 15:55:40,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-22 15:55:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2018-10-22 15:55:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-22 15:55:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2018-10-22 15:55:40,743 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 47 [2018-10-22 15:55:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2018-10-22 15:55:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:55:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2018-10-22 15:55:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-22 15:55:40,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:40,745 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:55:40,745 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:40,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1997667207, now seen corresponding path program 4 times [2018-10-22 15:55:40,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:40,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:40,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:55:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:40,747 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-22 15:55:40,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:40,930 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:55:40,930 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 15:55:40,930 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 15:55:40,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:40,930 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:55:40,938 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:55:40,939 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-22 15:55:40,981 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:55:40,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:40,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-22 15:55:41,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-22 15:55:41,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:55:41,199 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:55:41,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:55:41,216 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-22 15:55:41,264 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:55:41,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:55:41,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:55:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-22 15:55:41,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:55:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-22 15:55:41,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:55:41,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 8 [2018-10-22 15:55:41,407 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:55:41,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-22 15:55:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-22 15:55:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:41,408 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 8 states. [2018-10-22 15:55:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:41,677 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2018-10-22 15:55:41,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:55:41,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2018-10-22 15:55:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:41,678 INFO L225 Difference]: With dead ends: 121 [2018-10-22 15:55:41,678 INFO L226 Difference]: Without dead ends: 86 [2018-10-22 15:55:41,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 201 SyntacticMatches, 10 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:55:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-22 15:55:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2018-10-22 15:55:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-22 15:55:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2018-10-22 15:55:41,686 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 53 [2018-10-22 15:55:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:55:41,687 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2018-10-22 15:55:41,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-22 15:55:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2018-10-22 15:55:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-22 15:55:41,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:41,688 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:55:41,689 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:41,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2113763468, now seen corresponding path program 5 times [2018-10-22 15:55:41,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:41,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:41,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:55:41,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:41,690 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:55:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:55:41,806 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 15:55:41,824 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,825 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,826 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,826 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,826 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,826 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,827 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,827 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,828 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,828 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,828 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,828 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,829 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,829 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,830 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,830 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,830 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,831 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,831 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,831 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,832 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,832 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,832 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,833 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,833 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,833 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,834 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,834 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,834 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,835 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,835 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,835 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,836 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,841 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,841 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,841 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,841 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,843 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,843 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,844 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,844 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,844 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,847 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,853 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,853 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,854 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,854 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,854 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,854 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,855 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,855 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,855 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,855 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,856 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,856 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,857 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,857 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,857 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,858 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,858 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,858 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,858 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,859 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,859 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,859 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,859 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,860 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,860 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,860 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,860 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,861 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,861 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,861 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,861 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,862 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,862 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,862 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,862 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,862 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,863 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,864 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,864 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,864 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-22 15:55:41,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:55:41 BoogieIcfgContainer [2018-10-22 15:55:41,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:55:41,891 INFO L168 Benchmark]: Toolchain (without parser) took 7512.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 7.1 GB. [2018-10-22 15:55:41,893 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:55:41,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.27 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:55:41,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.86 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. [2018-10-22 15:55:41,894 INFO L168 Benchmark]: Boogie Preprocessor took 35.40 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. [2018-10-22 15:55:41,895 INFO L168 Benchmark]: RCFGBuilder took 704.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2018-10-22 15:55:41,896 INFO L168 Benchmark]: TraceAbstraction took 6419.52 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 132.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 10.4 MB). Peak memory consumption was 142.5 MB. Max. memory is 7.1 GB. [2018-10-22 15:55:41,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.27 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.86 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 35.40 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 704.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6419.52 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 132.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 10.4 MB). Peak memory consumption was 142.5 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 - 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: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 55. Possible FailurePath: [L17] CALL char string_A[5], string_B[5]; [L17] RET char string_A[5], string_B[5]; [L17] RET char string_A[5], string_B[5]; [L18] int i, j, nc_A, nc_B, found=0; [L21] i=0 [L21] COND TRUE i<5 [L22] CALL string_A[i]=__VERIFIER_nondet_char() [L22] RET string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] CALL string_A[i]=__VERIFIER_nondet_char() [L22] RET string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] CALL string_A[i]=__VERIFIER_nondet_char() [L22] RET string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] CALL string_A[i]=__VERIFIER_nondet_char() [L22] RET string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] CALL string_A[i]=__VERIFIER_nondet_char() [L22] RET string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND FALSE !(i<5) [L23] CALL, EXPR string_A[5 -1] [L23] RET, EXPR string_A[5 -1] [L23] COND FALSE !(!(string_A[5 -1]=='\0')) [L25] i=0 [L25] COND TRUE i<5 [L26] CALL string_B[i]=__VERIFIER_nondet_char() [L26] RET string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] CALL string_B[i]=__VERIFIER_nondet_char() [L26] RET string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] CALL string_B[i]=__VERIFIER_nondet_char() [L26] RET string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] CALL string_B[i]=__VERIFIER_nondet_char() [L26] RET string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] CALL string_B[i]=__VERIFIER_nondet_char() [L26] RET string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND FALSE !(i<5) [L27] CALL, EXPR string_B[5 -1] [L27] RET, EXPR string_B[5 -1] [L27] COND FALSE !(!(string_B[5 -1]=='\0')) [L29] nc_A = 0 [L30] CALL, EXPR string_A[nc_A] [L30] RET, EXPR string_A[nc_A] [L30] COND FALSE !(string_A[nc_A]!='\0') [L33] nc_B = 0 [L34] CALL, EXPR string_B[nc_B] [L34] RET, EXPR string_B[nc_B] [L34] COND FALSE !(string_B[nc_B]!='\0') [L37] COND FALSE !(!(nc_B >= nc_A)) [L40] EXPR j=0 [L40] i=j=0 [L41] COND FALSE !((inc_B-1)<