java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:28:50,618 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:28:50,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:28:50,632 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:28:50,632 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:28:50,633 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:28:50,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:28:50,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:28:50,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:28:50,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:28:50,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:28:50,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:28:50,641 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:28:50,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:28:50,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:28:50,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:28:50,645 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:28:50,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:28:50,649 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:28:50,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:28:50,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:28:50,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:28:50,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:28:50,666 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 [2018-10-23 22:28:50,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:28:50,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:28:50,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:28:50,684 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:28:50,686 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:28:50,686 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:28:50,686 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:28:50,687 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:28:50,687 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:28:50,687 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:28:50,687 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:28:50,688 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:28:50,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:28:50,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:28:50,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:28:50,693 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:28:50,693 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:28:50,693 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:28:50,694 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:28:50,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:28:50,694 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:28:50,694 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:28:50,694 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:28:50,695 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:28:50,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:28:50,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:28:50,695 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:28:50,695 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:28:50,696 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:28:50,745 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:28:50,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:28:50,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:28:50,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:28:50,765 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:28:50,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-10-23 22:28:50,827 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3fe216e50/4ebccd36987746b9948ef2aa45a64aac/FLAG0b504ae5d [2018-10-23 22:28:51,434 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:28:51,435 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-10-23 22:28:51,458 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3fe216e50/4ebccd36987746b9948ef2aa45a64aac/FLAG0b504ae5d [2018-10-23 22:28:51,480 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3fe216e50/4ebccd36987746b9948ef2aa45a64aac [2018-10-23 22:28:51,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:28:51,497 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:28:51,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:51,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:28:51,506 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:28:51,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:51" (1/1) ... [2018-10-23 22:28:51,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a459524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:51, skipping insertion in model container [2018-10-23 22:28:51,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:51" (1/1) ... [2018-10-23 22:28:51,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:28:51,598 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:28:52,082 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:52,086 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:28:52,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:52,265 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:28:52,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52 WrapperNode [2018-10-23 22:28:52,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:52,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:52,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:28:52,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:28:52,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:52,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:28:52,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:28:52,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:28:52,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (1/1) ... [2018-10-23 22:28:52,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:28:52,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:28:52,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:28:52,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:28:52,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (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 [2018-10-23 22:28:52,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:28:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:28:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:28:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:28:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:28:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:28:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:28:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:28:56,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:28:56,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:56 BoogieIcfgContainer [2018-10-23 22:28:56,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:28:56,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:28:56,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:28:56,161 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:28:56,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:28:51" (1/3) ... [2018-10-23 22:28:56,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a140684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:56, skipping insertion in model container [2018-10-23 22:28:56,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:52" (2/3) ... [2018-10-23 22:28:56,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a140684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:56, skipping insertion in model container [2018-10-23 22:28:56,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:56" (3/3) ... [2018-10-23 22:28:56,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label39_false-unreach-call_false-termination.c [2018-10-23 22:28:56,173 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:28:56,182 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:28:56,201 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:28:56,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:28:56,242 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:28:56,242 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:28:56,242 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:28:56,242 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:28:56,243 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:28:56,244 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:28:56,244 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:28:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:28:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-23 22:28:56,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:56,280 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:56,282 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:56,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1823937900, now seen corresponding path program 1 times [2018-10-23 22:28:56,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:56,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:56,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:56,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:56,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:56,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:56,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:28:56,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:56,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:28:56,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:28:56,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:56,722 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:28:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:58,434 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:28:58,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:28:58,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-23 22:28:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:58,460 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:28:58,460 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:28:58,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:28:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:28:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:28:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:28:58,557 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 32 [2018-10-23 22:28:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:58,557 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:28:58,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:28:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:28:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 22:28:58,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:58,565 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:58,569 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:58,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash -319610313, now seen corresponding path program 1 times [2018-10-23 22:28:58,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:58,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:58,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:58,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:58,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:58,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:58,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:28:58,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:58,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:28:58,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:28:58,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:28:58,931 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:29:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:01,324 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-23 22:29:01,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:01,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-23 22:29:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:01,337 INFO L225 Difference]: With dead ends: 1062 [2018-10-23 22:29:01,337 INFO L226 Difference]: Without dead ends: 634 [2018-10-23 22:29:01,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:29:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-23 22:29:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-23 22:29:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-23 22:29:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-23 22:29:01,390 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 119 [2018-10-23 22:29:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:01,391 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-23 22:29:01,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:29:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-23 22:29:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 22:29:01,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:01,395 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:01,395 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:01,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:01,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1728515332, now seen corresponding path program 1 times [2018-10-23 22:29:01,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:01,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:01,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:01,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:01,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:01,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:01,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:01,849 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-10-23 22:29:01,851 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:01,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:01,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:04,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:04,035 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:29:04,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:04,054 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:05,396 INFO L232 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 77.9% of their original sizes. [2018-10-23 22:29:05,397 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:05,752 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:29:05,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:29:05,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-23 22:29:05,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:05,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:29:05,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:29:05,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:29:05,755 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 7 states. [2018-10-23 22:29:07,356 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:34,601 INFO L93 Difference]: Finished difference Result 1429 states and 2328 transitions. [2018-10-23 22:29:34,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:34,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2018-10-23 22:29:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:34,607 INFO L225 Difference]: With dead ends: 1429 [2018-10-23 22:29:34,608 INFO L226 Difference]: Without dead ends: 810 [2018-10-23 22:29:34,614 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:29:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-10-23 22:29:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2018-10-23 22:29:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2018-10-23 22:29:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1209 transitions. [2018-10-23 22:29:34,647 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1209 transitions. Word has length 128 [2018-10-23 22:29:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:34,647 INFO L481 AbstractCegarLoop]: Abstraction has 808 states and 1209 transitions. [2018-10-23 22:29:34,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:29:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1209 transitions. [2018-10-23 22:29:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-23 22:29:34,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:34,653 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:34,654 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:34,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:34,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1027226283, now seen corresponding path program 1 times [2018-10-23 22:29:34,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:34,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:34,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:34,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:34,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:35,254 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:35,464 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:29:35,697 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:36,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:36,164 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:36,165 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-23 22:29:36,165 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:36,171 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:36,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:39,661 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:29:39,661 INFO L272 AbstractInterpreter]: Visited 105 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:29:39,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:39,675 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:29:39,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:39,675 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:29:39,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:39,685 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:29:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:39,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:29:40,223 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:40,632 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 82 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:40,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:29:41,527 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-23 22:29:41,831 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:29:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:42,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-23 22:29:42,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-10-23 22:29:42,386 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 22:29:42,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 22:29:42,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 22:29:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:29:42,387 INFO L87 Difference]: Start difference. First operand 808 states and 1209 transitions. Second operand 15 states. [2018-10-23 22:29:43,654 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-10-23 22:29:44,605 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-23 22:29:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:49,724 INFO L93 Difference]: Finished difference Result 2479 states and 3951 transitions. [2018-10-23 22:29:49,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 22:29:49,725 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-10-23 22:29:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:49,741 INFO L225 Difference]: With dead ends: 2479 [2018-10-23 22:29:49,741 INFO L226 Difference]: Without dead ends: 1661 [2018-10-23 22:29:49,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-10-23 22:29:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2018-10-23 22:29:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1397. [2018-10-23 22:29:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-10-23 22:29:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1795 transitions. [2018-10-23 22:29:49,829 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1795 transitions. Word has length 213 [2018-10-23 22:29:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:49,829 INFO L481 AbstractCegarLoop]: Abstraction has 1397 states and 1795 transitions. [2018-10-23 22:29:49,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-23 22:29:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1795 transitions. [2018-10-23 22:29:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-23 22:29:49,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:49,836 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:49,837 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:49,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash -229492457, now seen corresponding path program 1 times [2018-10-23 22:29:49,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:49,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:49,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:49,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:49,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:50,362 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:50,546 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:29:50,769 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:51,052 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 22:29:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:51,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:51,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:51,599 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-23 22:29:51,600 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:51,606 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:51,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:58,690 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:58,690 INFO L272 AbstractInterpreter]: Visited 119 different actions 232 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:29:58,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:58,729 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:30:03,067 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 78.26% of their original sizes. [2018-10-23 22:30:03,067 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:30:11,276 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:30:11,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:30:11,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 29 [2018-10-23 22:30:11,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:11,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 22:30:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 22:30:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-10-23 22:30:11,278 INFO L87 Difference]: Start difference. First operand 1397 states and 1795 transitions. Second operand 16 states. [2018-10-23 22:31:26,855 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:32:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:32:33,294 INFO L93 Difference]: Finished difference Result 2983 states and 3831 transitions. [2018-10-23 22:32:33,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 22:32:33,294 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 239 [2018-10-23 22:32:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:32:33,304 INFO L225 Difference]: With dead ends: 2983 [2018-10-23 22:32:33,304 INFO L226 Difference]: Without dead ends: 1775 [2018-10-23 22:32:33,311 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 246 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:32:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2018-10-23 22:32:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1763. [2018-10-23 22:32:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-23 22:32:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2166 transitions. [2018-10-23 22:32:33,462 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2166 transitions. Word has length 239 [2018-10-23 22:32:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:32:33,463 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2166 transitions. [2018-10-23 22:32:33,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-23 22:32:33,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2166 transitions. [2018-10-23 22:32:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-23 22:32:33,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:32:33,470 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:32:33,470 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:32:33,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:32:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash 613999339, now seen corresponding path program 1 times [2018-10-23 22:32:33,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:32:33,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:33,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:32:33,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:33,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:32:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:32:33,795 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 22:32:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 183 proven. 125 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 22:32:34,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:32:34,065 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:32:34,065 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 350 with the following transitions: [2018-10-23 22:32:34,066 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:32:34,070 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:32:34,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 22:32:35,921 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 22:32:35,921 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 22:32:35,922 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 22:32:35,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:32:35,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:32:35,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:32:35,931 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:32:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:32:36,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:32:36,080 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 22:32:36,281 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:32:36,282 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:32:36,287 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:32:36,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:32:36 BoogieIcfgContainer [2018-10-23 22:32:36,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:32:36,288 INFO L168 Benchmark]: Toolchain (without parser) took 224792.71 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 315.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,290 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:32:36,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.58 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 230.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,292 INFO L168 Benchmark]: Boogie Preprocessor took 117.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,293 INFO L168 Benchmark]: RCFGBuilder took 3539.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.5 MB). Peak memory consumption was 130.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,293 INFO L168 Benchmark]: TraceAbstraction took 220130.39 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 214.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.58 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 230.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3539.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.5 MB). Peak memory consumption was 130.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220130.39 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 214.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was analyzing trace of length 350 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 220.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 741 SDtfs, 6002 SDslu, 1014 SDs, 0 SdLazy, 7383 SolverSat, 1614 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 843 GetRequests, 768 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1763occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.7s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9944709152273178 AbsIntWeakeningRatio, 0.12602739726027398 AbsIntAvgWeakeningVarsNumRemoved, 322.86301369863014 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 944 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1150 ConstructedInterpolants, 0 QuantifiedInterpolants, 2890331 SizeOfPredicates, 6 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 439/601 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown