java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 22:14:28,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 22:14:28,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 22:14:28,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 22:14:28,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 22:14:28,627 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 22:14:28,628 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 22:14:28,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 22:14:28,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 22:14:28,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 22:14:28,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 22:14:28,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 22:14:28,639 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 22:14:28,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 22:14:28,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 22:14:28,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 22:14:28,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 22:14:28,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 22:14:28,649 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 22:14:28,650 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 22:14:28,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 22:14:28,652 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 22:14:28,655 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 22:14:28,669 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 22:14:28,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 22:14:28,690 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 22:14:28,691 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 22:14:28,691 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 22:14:28,692 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 22:14:28,692 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 22:14:28,692 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 22:14:28,692 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 22:14:28,692 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 22:14:28,693 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 22:14:28,694 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 22:14:28,694 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 22:14:28,694 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 22:14:28,694 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 22:14:28,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 22:14:28,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 22:14:28,695 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 22:14:28,695 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 22:14:28,695 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 22:14:28,695 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 22:14:28,696 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 22:14:28,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 22:14:28,696 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 22:14:28,696 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 22:14:28,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 22:14:28,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 22:14:28,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 22:14:28,757 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 22:14:28,758 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 22:14:28,759 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-07-21 22:14:29,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab2be3e9/bae04d9964cc480c8ac4213c8c39a3b0/FLAG37017049a [2018-07-21 22:14:29,253 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 22:14:29,253 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-07-21 22:14:29,258 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab2be3e9/bae04d9964cc480c8ac4213c8c39a3b0/FLAG37017049a [2018-07-21 22:14:29,272 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab2be3e9/bae04d9964cc480c8ac4213c8c39a3b0 [2018-07-21 22:14:29,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 22:14:29,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 22:14:29,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 22:14:29,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 22:14:29,302 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 22:14:29,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ee0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29, skipping insertion in model container [2018-07-21 22:14:29,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,448 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 22:14:29,490 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 22:14:29,508 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 22:14:29,514 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 22:14:29,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29 WrapperNode [2018-07-21 22:14:29,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 22:14:29,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 22:14:29,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 22:14:29,539 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 22:14:29,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 22:14:29,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 22:14:29,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 22:14:29,576 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 22:14:29,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... [2018-07-21 22:14:29,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 22:14:29,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 22:14:29,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 22:14:29,604 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 22:14:29,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 22:14:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 22:14:29,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 22:14:30,082 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 22:14:30,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:14:30 BoogieIcfgContainer [2018-07-21 22:14:30,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 22:14:30,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 22:14:30,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 22:14:30,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 22:14:30,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:14:29" (1/3) ... [2018-07-21 22:14:30,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771b4623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:14:30, skipping insertion in model container [2018-07-21 22:14:30,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:14:29" (2/3) ... [2018-07-21 22:14:30,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771b4623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:14:30, skipping insertion in model container [2018-07-21 22:14:30,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:14:30" (3/3) ... [2018-07-21 22:14:30,101 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-07-21 22:14:30,119 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 22:14:30,135 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 22:14:30,195 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 22:14:30,196 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 22:14:30,196 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 22:14:30,196 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 22:14:30,196 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 22:14:30,197 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 22:14:30,197 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 22:14:30,197 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 22:14:30,197 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 22:14:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-21 22:14:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-21 22:14:30,213 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:30,214 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:30,214 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:30,218 INFO L82 PathProgramCache]: Analyzing trace with hash 413769545, now seen corresponding path program 1 times [2018-07-21 22:14:30,220 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:30,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:30,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:30,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:14:30,315 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 22:14:30,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 22:14:30,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-21 22:14:30,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-21 22:14:30,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-21 22:14:30,330 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-07-21 22:14:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:30,345 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2018-07-21 22:14:30,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-21 22:14:30,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-07-21 22:14:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:30,356 INFO L225 Difference]: With dead ends: 31 [2018-07-21 22:14:30,356 INFO L226 Difference]: Without dead ends: 14 [2018-07-21 22:14:30,359 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-21 22:14:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-21 22:14:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-21 22:14:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-21 22:14:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-07-21 22:14:30,402 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-07-21 22:14:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:30,405 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-07-21 22:14:30,405 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-21 22:14:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-07-21 22:14:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-21 22:14:30,406 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:30,406 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:30,406 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash 654474297, now seen corresponding path program 1 times [2018-07-21 22:14:30,407 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:30,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:30,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:30,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:14:30,441 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 22:14:30,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 22:14:30,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 22:14:30,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 22:14:30,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 22:14:30,444 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2018-07-21 22:14:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:30,593 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-07-21 22:14:30,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 22:14:30,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-07-21 22:14:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:30,595 INFO L225 Difference]: With dead ends: 34 [2018-07-21 22:14:30,595 INFO L226 Difference]: Without dead ends: 25 [2018-07-21 22:14:30,596 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 22:14:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-21 22:14:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-07-21 22:14:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-21 22:14:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-07-21 22:14:30,601 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2018-07-21 22:14:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:30,603 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-07-21 22:14:30,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 22:14:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-07-21 22:14:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-21 22:14:30,604 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:30,604 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:30,604 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash -556552261, now seen corresponding path program 1 times [2018-07-21 22:14:30,605 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:30,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:30,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:30,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:14:30,691 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:14:30,691 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:14:30,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:30,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:14:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:14:30,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 22:14:30,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-07-21 22:14:30,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 22:14:30,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 22:14:30,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 22:14:30,755 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2018-07-21 22:14:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:30,884 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-07-21 22:14:30,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 22:14:30,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-07-21 22:14:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:30,885 INFO L225 Difference]: With dead ends: 48 [2018-07-21 22:14:30,885 INFO L226 Difference]: Without dead ends: 36 [2018-07-21 22:14:30,886 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 22:14:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-21 22:14:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2018-07-21 22:14:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-21 22:14:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-07-21 22:14:30,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-07-21 22:14:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:30,892 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-07-21 22:14:30,893 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 22:14:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-07-21 22:14:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-21 22:14:30,893 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:30,894 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:30,894 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash -523455239, now seen corresponding path program 2 times [2018-07-21 22:14:30,894 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:30,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:30,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:30,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 22:14:31,000 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 22:14:31,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 22:14:31,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 22:14:31,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 22:14:31,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-21 22:14:31,001 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2018-07-21 22:14:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:31,251 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-07-21 22:14:31,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 22:14:31,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-07-21 22:14:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:31,252 INFO L225 Difference]: With dead ends: 30 [2018-07-21 22:14:31,252 INFO L226 Difference]: Without dead ends: 26 [2018-07-21 22:14:31,253 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-21 22:14:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-21 22:14:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-21 22:14:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-21 22:14:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-07-21 22:14:31,257 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2018-07-21 22:14:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:31,257 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-07-21 22:14:31,258 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 22:14:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-07-21 22:14:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-21 22:14:31,258 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:31,259 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:31,259 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash 374744466, now seen corresponding path program 1 times [2018-07-21 22:14:31,259 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:31,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:31,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-21 22:14:31,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:14:31,330 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:14:31,330 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:14:31,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:31,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:14:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:14:31,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 22:14:31,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-07-21 22:14:31,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 22:14:31,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 22:14:31,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 22:14:31,382 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-07-21 22:14:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:31,472 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-07-21 22:14:31,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-21 22:14:31,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-07-21 22:14:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:31,474 INFO L225 Difference]: With dead ends: 59 [2018-07-21 22:14:31,474 INFO L226 Difference]: Without dead ends: 43 [2018-07-21 22:14:31,475 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 22:14:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-21 22:14:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2018-07-21 22:14:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-21 22:14:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-07-21 22:14:31,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2018-07-21 22:14:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:31,479 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-07-21 22:14:31,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 22:14:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-07-21 22:14:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-21 22:14:31,480 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:31,481 INFO L358 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:31,481 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:31,481 INFO L82 PathProgramCache]: Analyzing trace with hash 681991828, now seen corresponding path program 2 times [2018-07-21 22:14:31,481 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:31,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:31,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:14:31,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:14:31,607 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:14:31,607 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:14:31,628 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-21 22:14:31,655 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-21 22:14:31,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-21 22:14:31,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:14:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:14:31,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 22:14:31,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-07-21 22:14:31,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 22:14:31,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 22:14:31,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-21 22:14:31,686 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2018-07-21 22:14:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:31,758 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2018-07-21 22:14:31,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 22:14:31,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-07-21 22:14:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:31,759 INFO L225 Difference]: With dead ends: 74 [2018-07-21 22:14:31,759 INFO L226 Difference]: Without dead ends: 54 [2018-07-21 22:14:31,760 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-21 22:14:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-21 22:14:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2018-07-21 22:14:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-21 22:14:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-07-21 22:14:31,766 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 23 [2018-07-21 22:14:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:31,766 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-07-21 22:14:31,766 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 22:14:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-07-21 22:14:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-21 22:14:31,767 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:14:31,767 INFO L358 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:14:31,768 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:14:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1312845394, now seen corresponding path program 3 times [2018-07-21 22:14:31,768 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:14:31,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:14:31,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-21 22:14:31,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:14:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:14:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:14:31,917 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:14:31,917 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:14:31,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-21 22:14:31,959 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-07-21 22:14:31,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-21 22:14:31,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:14:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-21 22:14:32,282 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 22:14:32,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2018-07-21 22:14:32,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-21 22:14:32,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-21 22:14:32,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-21 22:14:32,283 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 10 states. [2018-07-21 22:14:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:14:32,779 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2018-07-21 22:14:32,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-21 22:14:32,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-07-21 22:14:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:14:32,780 INFO L225 Difference]: With dead ends: 89 [2018-07-21 22:14:32,780 INFO L226 Difference]: Without dead ends: 0 [2018-07-21 22:14:32,781 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2018-07-21 22:14:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-21 22:14:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-21 22:14:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-21 22:14:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-21 22:14:32,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-07-21 22:14:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:14:32,782 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-21 22:14:32,782 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-21 22:14:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-21 22:14:32,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-21 22:14:32,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-21 22:14:32,853 INFO L421 ceAbstractionStarter]: For program point L13''(lines 13 15) no Hoare annotation was computed. [2018-07-21 22:14:32,853 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-07-21 22:14:32,853 INFO L421 ceAbstractionStarter]: For program point L17''(lines 17 21) no Hoare annotation was computed. [2018-07-21 22:14:32,853 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-21 22:14:32,853 INFO L421 ceAbstractionStarter]: For program point L17''''(lines 17 21) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L424 ceAbstractionStarter]: At program point L13'''(lines 13 15) the Hoare annotation is: true [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L417 ceAbstractionStarter]: At program point L17'''(lines 17 21) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1023) [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L424 ceAbstractionStarter]: At program point L4''(lines 3 8) the Hoare annotation is: true [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L9(lines 9 23) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-07-21 22:14:32,854 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-21 22:14:32,855 INFO L421 ceAbstractionStarter]: For program point L13''''(lines 13 15) no Hoare annotation was computed. [2018-07-21 22:14:32,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:14:32 BoogieIcfgContainer [2018-07-21 22:14:32,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 22:14:32,865 INFO L168 Benchmark]: Toolchain (without parser) took 3579.84 ms. Allocated memory was 307.2 MB in the beginning and 490.2 MB in the end (delta: 183.0 MB). Free memory was 253.9 MB in the beginning and 455.8 MB in the end (delta: -201.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 22:14:32,866 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 22:14:32,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.09 ms. Allocated memory is still 307.2 MB. Free memory was 252.9 MB in the beginning and 243.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-07-21 22:14:32,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 241.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-07-21 22:14:32,868 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 307.2 MB. Free memory was 241.7 MB in the beginning and 240.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-07-21 22:14:32,869 INFO L168 Benchmark]: RCFGBuilder took 480.26 ms. Allocated memory was 307.2 MB in the beginning and 477.1 MB in the end (delta: 169.9 MB). Free memory was 240.7 MB in the beginning and 447.3 MB in the end (delta: -206.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. [2018-07-21 22:14:32,870 INFO L168 Benchmark]: TraceAbstraction took 2779.42 ms. Allocated memory was 477.1 MB in the beginning and 490.2 MB in the end (delta: 13.1 MB). Free memory was 447.3 MB in the beginning and 455.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 5.3 GB. [2018-07-21 22:14:32,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 245.09 ms. Allocated memory is still 307.2 MB. Free memory was 252.9 MB in the beginning and 243.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 241.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 307.2 MB. Free memory was 241.7 MB in the beginning and 240.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 480.26 ms. Allocated memory was 307.2 MB in the beginning and 477.1 MB in the end (delta: 169.9 MB). Free memory was 240.7 MB in the beginning and 447.3 MB in the end (delta: -206.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2779.42 ms. Allocated memory was 477.1 MB in the beginning and 490.2 MB in the end (delta: 13.1 MB). Free memory was 447.3 MB in the beginning and 455.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 5.3 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 144 SDslu, 85 SDs, 0 SdLazy, 204 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=6, 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 18 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 198 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 6505 SizeOfPredicates, 6 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 45/119 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call3_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_22-14-32-886.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call3_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_22-14-32-886.csv Received shutdown request...