java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:40:07,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:40:07,241 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:40:07,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:40:07,254 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:40:07,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:40:07,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:40:07,259 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:40:07,261 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:40:07,262 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:40:07,263 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:40:07,264 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:40:07,265 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:40:07,266 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:40:07,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:40:07,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:40:07,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:40:07,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:40:07,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:40:07,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:40:07,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:40:07,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:40:07,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:40:07,301 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-22 15:40:07,323 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:40:07,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:40:07,324 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:40:07,324 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:40:07,325 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:40:07,325 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:40:07,326 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:40:07,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:40:07,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:40:07,326 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:40:07,326 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:40:07,327 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:40:07,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:40:07,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:40:07,327 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:40:07,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:40:07,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:40:07,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:40:07,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:40:07,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:40:07,329 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:40:07,329 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:40:07,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:40:07,329 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:40:07,329 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:40:07,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:40:07,330 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:40:07,330 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:40:07,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:40:07,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:40:07,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:40:07,419 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:40:07,420 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:40:07,420 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i [2018-10-22 15:40:07,501 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8fb8e20f3/a335b17481d4465790011fa0579bb0f2/FLAGe9686d87d [2018-10-22 15:40:08,035 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:40:08,038 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i [2018-10-22 15:40:08,048 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8fb8e20f3/a335b17481d4465790011fa0579bb0f2/FLAGe9686d87d [2018-10-22 15:40:08,069 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8fb8e20f3/a335b17481d4465790011fa0579bb0f2 [2018-10-22 15:40:08,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:40:08,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:40:08,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:08,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:40:08,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:40:08,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d964e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08, skipping insertion in model container [2018-10-22 15:40:08,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:40:08,150 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:40:08,394 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:08,399 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:40:08,423 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:08,440 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:40:08,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08 WrapperNode [2018-10-22 15:40:08,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:08,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:08,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:40:08,442 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:40:08,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:08,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:40:08,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:40:08,485 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:40:08,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... [2018-10-22 15:40:08,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:40:08,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:40:08,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:40:08,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:40:08,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:40:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-22 15:40:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-22 15:40:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:40:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:40:09,296 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:40:09,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:09 BoogieIcfgContainer [2018-10-22 15:40:09,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:40:09,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:40:09,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:40:09,302 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:40:09,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:40:08" (1/3) ... [2018-10-22 15:40:09,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248a78de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:09, skipping insertion in model container [2018-10-22 15:40:09,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:08" (2/3) ... [2018-10-22 15:40:09,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248a78de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:09, skipping insertion in model container [2018-10-22 15:40:09,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:09" (3/3) ... [2018-10-22 15:40:09,306 INFO L112 eAbstractionObserver]: Analyzing ICFG trex01_true-unreach-call_true-termination.i [2018-10-22 15:40:09,315 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:40:09,325 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:40:09,341 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:40:09,376 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:40:09,377 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:40:09,378 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:40:09,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:40:09,378 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:40:09,380 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:40:09,381 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:40:09,381 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:40:09,381 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:40:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-22 15:40:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 15:40:09,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:09,412 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:09,415 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:09,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2124153942, now seen corresponding path program 1 times [2018-10-22 15:40:09,425 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:09,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:09,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:09,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:09,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:09,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:09,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:40:09,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:40:09,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:40:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:40:09,599 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-10-22 15:40:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:09,626 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2018-10-22 15:40:09,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:40:09,628 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-22 15:40:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:09,642 INFO L225 Difference]: With dead ends: 45 [2018-10-22 15:40:09,642 INFO L226 Difference]: Without dead ends: 13 [2018-10-22 15:40:09,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:40:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-22 15:40:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-22 15:40:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 15:40:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-22 15:40:09,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-22 15:40:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:09,684 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-22 15:40:09,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:40:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-22 15:40:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 15:40:09,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:09,685 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:09,686 INFO L424 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:09,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:09,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1416692927, now seen corresponding path program 1 times [2018-10-22 15:40:09,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:09,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:09,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:09,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:09,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:09,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:09,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:40:09,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:40:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:40:09,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:40:09,785 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2018-10-22 15:40:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:09,875 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-22 15:40:09,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:40:09,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-22 15:40:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:09,878 INFO L225 Difference]: With dead ends: 13 [2018-10-22 15:40:09,878 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:40:09,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:40:09,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:40:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:40:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:40:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:40:09,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-10-22 15:40:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:09,882 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:40:09,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:40:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:40:09,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:40:09,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:40:09,946 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 11 33) no Hoare annotation was computed. [2018-10-22 15:40:09,947 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 11 33) the Hoare annotation is: true [2018-10-22 15:40:09,947 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 31) no Hoare annotation was computed. [2018-10-22 15:40:09,947 INFO L428 ceAbstractionStarter]: At program point L24-2(lines 22 32) the Hoare annotation is: true [2018-10-22 15:40:09,947 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-22 15:40:09,947 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-10-22 15:40:09,947 INFO L421 ceAbstractionStarter]: At program point L16-3(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2018-10-22 15:40:09,948 INFO L425 ceAbstractionStarter]: For program point L16-4(line 16) no Hoare annotation was computed. [2018-10-22 15:40:09,948 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:40:09,948 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:40:09,948 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-22 15:40:09,948 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 32) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L22-3(lines 11 33) no Hoare annotation was computed. [2018-10-22 15:40:09,949 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2018-10-22 15:40:09,950 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:40:09,950 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:40:09,950 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:40:09,950 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:40:09,950 INFO L428 ceAbstractionStarter]: At program point L41(lines 34 42) the Hoare annotation is: true [2018-10-22 15:40:09,950 INFO L428 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2018-10-22 15:40:09,951 INFO L425 ceAbstractionStarter]: For program point L39-1(lines 36 40) no Hoare annotation was computed. [2018-10-22 15:40:09,951 INFO L428 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: true [2018-10-22 15:40:09,951 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-10-22 15:40:09,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:40:09 BoogieIcfgContainer [2018-10-22 15:40:09,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:40:09,972 INFO L168 Benchmark]: Toolchain (without parser) took 1886.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -732.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:09,975 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:09,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:09,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:09,979 INFO L168 Benchmark]: Boogie Preprocessor took 31.42 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:09,980 INFO L168 Benchmark]: RCFGBuilder took 780.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:09,983 INFO L168 Benchmark]: TraceAbstraction took 672.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:09,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 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 349.53 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 41.98 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 31.42 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 780.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 672.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 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: 16]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 1 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...