java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:34:37,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:34:37,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:34:37,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:34:37,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:34:37,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:34:37,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:34:37,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:34:37,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:34:37,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:34:37,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:34:37,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:34:37,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:34:37,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:34:37,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:34:37,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:34:37,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:34:37,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:34:37,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:34:37,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:34:37,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:34:37,392 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:34:37,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:34:37,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:34:37,394 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:34:37,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:34:37,395 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:34:37,395 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:34:37,395 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:34:37,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:34:37,395 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:34:37,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:34:37,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:34:37,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:34:37,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:34:37,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:34:37,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:34:37,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:34:37,399 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:34:37,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:34:37,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:34:37,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:34:37,400 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:34:37,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:34:37,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:34:37,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:34:37,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:34:37,401 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:34:37,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:34:37,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:34:37,402 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:34:37,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:34:37,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:34:37,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:34:37,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:34:37,473 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:34:37,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2019-10-03 02:34:37,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83deb6c89/aa4534c6e3524562822b24bd65f8a4c7/FLAGe82ca25c2 [2019-10-03 02:34:37,997 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:34:37,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i [2019-10-03 02:34:38,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83deb6c89/aa4534c6e3524562822b24bd65f8a4c7/FLAGe82ca25c2 [2019-10-03 02:34:38,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83deb6c89/aa4534c6e3524562822b24bd65f8a4c7 [2019-10-03 02:34:38,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:34:38,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:34:38,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:38,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:34:38,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:34:38,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18014f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38, skipping insertion in model container [2019-10-03 02:34:38,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:34:38,400 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:34:38,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:38,672 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:34:38,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:38,843 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:34:38,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38 WrapperNode [2019-10-03 02:34:38,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:38,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:34:38,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:34:38,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:34:38,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... [2019-10-03 02:34:38,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:34:38,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:34:38,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:34:38,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:34:38,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:34:38,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:34:38,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:34:38,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:34:38,973 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2019-10-03 02:34:38,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:34:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:34:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:34:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2019-10-03 02:34:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:34:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:34:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:34:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:34:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:34:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:34:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:34:38,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:34:39,346 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:34:39,347 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-03 02:34:39,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:39 BoogieIcfgContainer [2019-10-03 02:34:39,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:34:39,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:34:39,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:34:39,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:34:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:34:38" (1/3) ... [2019-10-03 02:34:39,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b282923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:39, skipping insertion in model container [2019-10-03 02:34:39,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:38" (2/3) ... [2019-10-03 02:34:39,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b282923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:39, skipping insertion in model container [2019-10-03 02:34:39,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:39" (3/3) ... [2019-10-03 02:34:39,357 INFO L109 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2019-10-03 02:34:39,367 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:34:39,375 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:34:39,393 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:34:39,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:34:39,422 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:34:39,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:34:39,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:34:39,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:34:39,423 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:34:39,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:34:39,424 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:34:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-03 02:34:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-03 02:34:39,452 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:39,453 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:39,455 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 625586084, now seen corresponding path program 1 times [2019-10-03 02:34:39,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:39,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:39,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,527 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:39,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:39,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:34:39,688 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:39,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:34:39,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:34:39,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:34:39,707 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-03 02:34:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:39,726 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-03 02:34:39,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:34:39,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-03 02:34:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:39,737 INFO L225 Difference]: With dead ends: 34 [2019-10-03 02:34:39,737 INFO L226 Difference]: Without dead ends: 29 [2019-10-03 02:34:39,739 INFO L640 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 [2019-10-03 02:34:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-03 02:34:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-03 02:34:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-03 02:34:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-03 02:34:39,775 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2019-10-03 02:34:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:39,775 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-03 02:34:39,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:34:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-03 02:34:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-03 02:34:39,777 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:39,777 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:39,777 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2087778385, now seen corresponding path program 1 times [2019-10-03 02:34:39,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:39,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:39,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,780 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:39,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:39,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:34:39,860 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:39,861 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:34:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:34:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:34:39,862 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-10-03 02:34:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:39,901 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-03 02:34:39,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:34:39,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-03 02:34:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:39,903 INFO L225 Difference]: With dead ends: 31 [2019-10-03 02:34:39,903 INFO L226 Difference]: Without dead ends: 31 [2019-10-03 02:34:39,904 INFO L640 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 [2019-10-03 02:34:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-03 02:34:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-03 02:34:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-03 02:34:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-03 02:34:39,911 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2019-10-03 02:34:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:39,912 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-03 02:34:39,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:34:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-03 02:34:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-03 02:34:39,913 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:39,913 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:39,913 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1482156659, now seen corresponding path program 1 times [2019-10-03 02:34:39,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:39,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:39,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:39,917 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:39,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:34:39,976 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:34:39,977 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-10-03 02:34:39,978 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [35], [39], [45], [47], [49], [54], [62], [72], [75], [77], [83], [84], [85], [87], [88], [89] [2019-10-03 02:34:40,009 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:34:40,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:34:40,064 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:34:40,066 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 12 root evaluator evaluations with a maximum evaluation depth of 0. Performed 12 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 18 variables. [2019-10-03 02:34:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:40,070 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:34:40,101 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:34:40,102 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:34:40,104 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-03 02:34:40,104 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:34:40,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:34:40,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-03 02:34:40,105 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:40,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:34:40,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:34:40,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:34:40,106 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 2 states. [2019-10-03 02:34:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:40,107 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:34:40,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:34:40,108 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-03 02:34:40,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:40,108 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:34:40,108 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:34:40,109 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:34:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:34:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:34:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:34:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:34:40,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-03 02:34:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:40,110 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:34:40,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:34:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:34:40,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:34:40,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:34:40 BoogieIcfgContainer [2019-10-03 02:34:40,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:34:40,118 INFO L168 Benchmark]: Toolchain (without parser) took 1754.50 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.8 MB in the beginning and 118.1 MB in the end (delta: -31.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,119 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.92 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.6 MB in the beginning and 177.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,121 INFO L168 Benchmark]: Boogie Preprocessor took 71.77 ms. Allocated memory is still 198.7 MB. Free memory was 177.2 MB in the beginning and 174.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,122 INFO L168 Benchmark]: RCFGBuilder took 430.87 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 157.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,123 INFO L168 Benchmark]: TraceAbstraction took 765.99 ms. Allocated memory is still 198.7 MB. Free memory was 157.7 MB in the beginning and 118.1 MB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:40,128 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.92 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.6 MB in the beginning and 177.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.77 ms. Allocated memory is still 198.7 MB. Free memory was 177.2 MB in the beginning and 174.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.87 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 157.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 765.99 ms. Allocated memory is still 198.7 MB. Free memory was 157.7 MB in the beginning and 118.1 MB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 1 SDslu, 26 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8947368421052632 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...