java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:01:06,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:01:06,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:01:06,539 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:01:06,539 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:01:06,540 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:01:06,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:01:06,543 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:01:06,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:01:06,546 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:01:06,546 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:01:06,547 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:01:06,548 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:01:06,549 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:01:06,550 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:01:06,551 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:01:06,552 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:01:06,553 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:01:06,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:01:06,557 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:01:06,558 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:01:06,559 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:01:06,562 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 10:01:06,571 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:01:06,586 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:01:06,587 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:01:06,588 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:01:06,588 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:01:06,588 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:01:06,588 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:01:06,589 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:01:06,589 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:01:06,589 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:01:06,589 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:01:06,589 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:01:06,590 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:01:06,590 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:01:06,591 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:01:06,591 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:01:06,591 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:01:06,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:01:06,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:01:06,592 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:01:06,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:01:06,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:01:06,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:01:06,592 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:01:06,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:01:06,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:01:06,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:01:06,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:01:06,593 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:01:06,594 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:01:06,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:01:06,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:01:06,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:01:06,594 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:01:06,595 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:01:06,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:01:06,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:01:06,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:01:06,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:01:06,656 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:01:06,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-09-18 10:01:07,014 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4a3a455/b5faf17147db46f7962d85d4931dc096/FLAG947344642 [2018-09-18 10:01:07,189 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:01:07,190 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-09-18 10:01:07,198 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4a3a455/b5faf17147db46f7962d85d4931dc096/FLAG947344642 [2018-09-18 10:01:07,224 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4a3a455/b5faf17147db46f7962d85d4931dc096 [2018-09-18 10:01:07,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:01:07,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:01:07,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:01:07,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:01:07,250 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:01:07,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2931cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07, skipping insertion in model container [2018-09-18 10:01:07,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,267 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:01:07,463 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:01:07,481 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:01:07,502 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:01:07,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07 WrapperNode [2018-09-18 10:01:07,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:01:07,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:01:07,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:01:07,529 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:01:07,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:01:07,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:01:07,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:01:07,555 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:01:07,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... [2018-09-18 10:01:07,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:01:07,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:01:07,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:01:07,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:01:07,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 10:01:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:01:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:01:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:01:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:01:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:01:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:01:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-18 10:01:07,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-18 10:01:08,287 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:01:08,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:01:08 BoogieIcfgContainer [2018-09-18 10:01:08,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:01:08,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:01:08,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:01:08,293 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:01:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:01:07" (1/3) ... [2018-09-18 10:01:08,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e40d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:01:08, skipping insertion in model container [2018-09-18 10:01:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:07" (2/3) ... [2018-09-18 10:01:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e40d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:01:08, skipping insertion in model container [2018-09-18 10:01:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:01:08" (3/3) ... [2018-09-18 10:01:08,297 INFO L112 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop_true-unreach-call_false-termination.i [2018-09-18 10:01:08,307 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:01:08,317 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:01:08,384 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:01:08,384 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:01:08,385 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:01:08,385 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:01:08,385 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:01:08,385 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:01:08,385 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:01:08,386 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:01:08,386 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:01:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-09-18 10:01:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-18 10:01:08,418 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:08,420 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:08,422 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash -372910930, now seen corresponding path program 1 times [2018-09-18 10:01:08,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:08,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:08,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:08,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:08,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:01:08,681 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:01:08,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 10:01:08,682 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:08,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:01:08,698 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:01:08,699 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:01:08,701 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2018-09-18 10:01:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:09,019 INFO L93 Difference]: Finished difference Result 90 states and 153 transitions. [2018-09-18 10:01:09,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:01:09,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-18 10:01:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:09,031 INFO L225 Difference]: With dead ends: 90 [2018-09-18 10:01:09,031 INFO L226 Difference]: Without dead ends: 47 [2018-09-18 10:01:09,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:01:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-18 10:01:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-09-18 10:01:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-18 10:01:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2018-09-18 10:01:09,095 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 15 [2018-09-18 10:01:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:09,096 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2018-09-18 10:01:09,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:01:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2018-09-18 10:01:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-18 10:01:09,099 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:09,099 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:09,099 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -394866897, now seen corresponding path program 1 times [2018-09-18 10:01:09,100 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:09,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:09,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:09,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:09,102 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:01:09,291 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:01:09,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 10:01:09,291 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:09,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:01:09,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:01:09,293 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:01:09,294 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand 5 states. [2018-09-18 10:01:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:09,559 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2018-09-18 10:01:09,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:01:09,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-18 10:01:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:09,563 INFO L225 Difference]: With dead ends: 58 [2018-09-18 10:01:09,563 INFO L226 Difference]: Without dead ends: 56 [2018-09-18 10:01:09,564 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:01:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-18 10:01:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-09-18 10:01:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-18 10:01:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2018-09-18 10:01:09,582 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 15 [2018-09-18 10:01:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:09,582 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2018-09-18 10:01:09,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:01:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2018-09-18 10:01:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-18 10:01:09,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:09,584 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:09,584 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:09,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1825950327, now seen corresponding path program 1 times [2018-09-18 10:01:09,584 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:09,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:09,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:09,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:09,586 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:01:09,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:09,800 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 10:01:09,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:09,810 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:09,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:01:09,907 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:01:09,999 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:09,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 9 [2018-09-18 10:01:10,000 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:10,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:01:10,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:01:10,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:01:10,001 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand 5 states. [2018-09-18 10:01:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:10,178 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2018-09-18 10:01:10,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:01:10,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-18 10:01:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:10,186 INFO L225 Difference]: With dead ends: 58 [2018-09-18 10:01:10,186 INFO L226 Difference]: Without dead ends: 56 [2018-09-18 10:01:10,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:01:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-18 10:01:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-18 10:01:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-18 10:01:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2018-09-18 10:01:10,215 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 20 [2018-09-18 10:01:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:10,217 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2018-09-18 10:01:10,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:01:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2018-09-18 10:01:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-18 10:01:10,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:10,220 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:10,220 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -443407858, now seen corresponding path program 1 times [2018-09-18 10:01:10,221 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:10,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:10,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:10,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:10,223 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-18 10:01:10,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:10,651 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 10:01:10,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:10,665 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:10,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 10:01:10,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 10:01:10,840 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:10,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9] total 13 [2018-09-18 10:01:10,840 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:10,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:01:10,841 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:01:10,841 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:01:10,841 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand 6 states. [2018-09-18 10:01:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:11,111 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-09-18 10:01:11,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:01:11,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-09-18 10:01:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:11,114 INFO L225 Difference]: With dead ends: 62 [2018-09-18 10:01:11,114 INFO L226 Difference]: Without dead ends: 60 [2018-09-18 10:01:11,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:01:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-18 10:01:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-18 10:01:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-18 10:01:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2018-09-18 10:01:11,128 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 25 [2018-09-18 10:01:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:11,129 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2018-09-18 10:01:11,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:01:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2018-09-18 10:01:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-18 10:01:11,130 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:11,130 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:11,131 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash -105052009, now seen corresponding path program 1 times [2018-09-18 10:01:11,131 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:11,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:11,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:11,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:11,133 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 10:01:11,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:11,265 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 10:01:11,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:11,275 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:11,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 10:01:11,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 10:01:11,452 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:11,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 9 [2018-09-18 10:01:11,452 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:11,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:01:11,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:01:11,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:01:11,453 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 5 states. [2018-09-18 10:01:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:11,640 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2018-09-18 10:01:11,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:01:11,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-09-18 10:01:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:11,643 INFO L225 Difference]: With dead ends: 68 [2018-09-18 10:01:11,643 INFO L226 Difference]: Without dead ends: 66 [2018-09-18 10:01:11,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:01:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-18 10:01:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2018-09-18 10:01:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-18 10:01:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2018-09-18 10:01:11,656 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 30 [2018-09-18 10:01:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:11,657 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2018-09-18 10:01:11,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:01:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2018-09-18 10:01:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-18 10:01:11,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:11,659 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:11,659 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1255310588, now seen corresponding path program 1 times [2018-09-18 10:01:11,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:11,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:11,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:11,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:11,661 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 10:01:11,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:11,765 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:01:11,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:11,775 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:11,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 10:01:11,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 10:01:12,060 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:12,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2018-09-18 10:01:12,060 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:12,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:01:12,061 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:01:12,061 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:01:12,061 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 6 states. [2018-09-18 10:01:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:12,246 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2018-09-18 10:01:12,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:01:12,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-09-18 10:01:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:12,255 INFO L225 Difference]: With dead ends: 78 [2018-09-18 10:01:12,255 INFO L226 Difference]: Without dead ends: 76 [2018-09-18 10:01:12,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:01:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-18 10:01:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2018-09-18 10:01:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-18 10:01:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2018-09-18 10:01:12,270 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 48 [2018-09-18 10:01:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:12,270 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2018-09-18 10:01:12,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:01:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2018-09-18 10:01:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-18 10:01:12,273 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:12,273 INFO L376 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:12,273 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash -979286812, now seen corresponding path program 1 times [2018-09-18 10:01:12,274 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:12,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:12,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:12,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:12,275 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 10:01:12,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:12,493 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 10:01:12,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:12,500 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:12,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-18 10:01:12,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-18 10:01:12,720 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:12,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [9] total 14 [2018-09-18 10:01:12,721 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:12,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 10:01:12,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 10:01:12,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:01:12,722 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 7 states. [2018-09-18 10:01:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:12,981 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2018-09-18 10:01:12,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:01:12,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2018-09-18 10:01:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:12,984 INFO L225 Difference]: With dead ends: 78 [2018-09-18 10:01:12,984 INFO L226 Difference]: Without dead ends: 76 [2018-09-18 10:01:12,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:01:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-18 10:01:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2018-09-18 10:01:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-18 10:01:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2018-09-18 10:01:12,997 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 58 [2018-09-18 10:01:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:12,998 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2018-09-18 10:01:12,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 10:01:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2018-09-18 10:01:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-18 10:01:13,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:01:13,001 INFO L376 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:01:13,001 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:01:13,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2026132663, now seen corresponding path program 1 times [2018-09-18 10:01:13,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:01:13,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:13,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:13,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:01:13,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:01:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-18 10:01:13,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:01:13,143 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:01:13,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:01:13,151 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:01:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:01:13,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:01:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 10:01:13,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:01:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 10:01:13,422 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:01:13,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [10] total 15 [2018-09-18 10:01:13,423 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:01:13,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 10:01:13,423 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 10:01:13,424 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:01:13,424 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 8 states. [2018-09-18 10:01:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:01:13,913 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2018-09-18 10:01:13,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:01:13,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2018-09-18 10:01:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:01:13,915 INFO L225 Difference]: With dead ends: 76 [2018-09-18 10:01:13,915 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 10:01:13,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-09-18 10:01:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 10:01:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 10:01:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 10:01:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 10:01:13,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2018-09-18 10:01:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:01:13,919 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 10:01:13,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 10:01:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 10:01:13,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 10:01:13,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 10:01:14,432 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-18 10:01:14,432 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-18 10:01:14,432 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-18 10:01:14,433 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-18 10:01:14,433 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-18 10:01:14,433 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-18 10:01:14,433 INFO L422 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,433 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 53) no Hoare annotation was computed. [2018-09-18 10:01:14,433 INFO L422 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,433 INFO L422 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,434 INFO L422 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,434 INFO L422 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,434 INFO L422 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,434 INFO L422 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,434 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-18 10:01:14,434 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 51) no Hoare annotation was computed. [2018-09-18 10:01:14,434 INFO L422 ceAbstractionStarter]: At program point L20-3(lines 20 51) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,435 INFO L426 ceAbstractionStarter]: For program point L20-4(lines 20 51) no Hoare annotation was computed. [2018-09-18 10:01:14,435 INFO L422 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,435 INFO L422 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,435 INFO L426 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-09-18 10:01:14,435 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-18 10:01:14,435 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 21 50) no Hoare annotation was computed. [2018-09-18 10:01:14,436 INFO L422 ceAbstractionStarter]: At program point L21-3(lines 21 50) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,436 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-18 10:01:14,436 INFO L426 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-09-18 10:01:14,437 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 53) no Hoare annotation was computed. [2018-09-18 10:01:14,437 INFO L422 ceAbstractionStarter]: At program point L42(lines 22 49) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,437 INFO L422 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,437 INFO L422 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,437 INFO L422 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,438 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 53) the Hoare annotation is: true [2018-09-18 10:01:14,438 INFO L422 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,438 INFO L422 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,438 INFO L426 ceAbstractionStarter]: For program point L22(lines 22 49) no Hoare annotation was computed. [2018-09-18 10:01:14,439 INFO L422 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-09-18 10:01:14,439 INFO L426 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-09-18 10:01:14,439 INFO L426 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-09-18 10:01:14,439 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-18 10:01:14,439 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-18 10:01:14,439 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-18 10:01:14,439 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-18 10:01:14,440 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-18 10:01:14,440 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-18 10:01:14,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:01:14 BoogieIcfgContainer [2018-09-18 10:01:14,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:01:14,454 INFO L168 Benchmark]: Toolchain (without parser) took 7215.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -308.0 MB). Peak memory consumption was 437.5 MB. Max. memory is 7.1 GB. [2018-09-18 10:01:14,456 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:01:14,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:01:14,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.90 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. [2018-09-18 10:01:14,459 INFO L168 Benchmark]: Boogie Preprocessor took 27.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:01:14,459 INFO L168 Benchmark]: RCFGBuilder took 705.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:01:14,460 INFO L168 Benchmark]: TraceAbstraction took 6164.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 460.0 MB). Peak memory consumption was 460.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:01:14,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.90 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 27.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 705.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6164.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 460.0 MB). Peak memory consumption was 460.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((0 <= j && 0 <= i) && i + 1 <= len) && j + 5 <= bufsize) && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 8 OverallIterations, 11 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 418 SDtfs, 117 SDslu, 1047 SDs, 0 SdLazy, 519 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 490 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 55 PreInvPairs, 76 NumberOfFragments, 369 HoareAnnotationTreeSize, 55 FomulaSimplifications, 621 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 530 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 81480 SizeOfPredicates, 23 NumberOfNonLiveVariables, 538 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 1206/1284 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/SpamAssassin-loop_true-unreach-call_false-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-01-14-479.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/SpamAssassin-loop_true-unreach-call_false-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-01-14-479.csv Received shutdown request...