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/array-examples/sorting_bubblesort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:44,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:44,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:44,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:29:44,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:44,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:44,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:44,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:44,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:44,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:44,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:44,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:44,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:44,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:44,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:44,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:44,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:44,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:44,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:44,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:44,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:44,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:44,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:44,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:44,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:44,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:44,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:44,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:44,394 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 [2019-10-02 16:29:44,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:44,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:44,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:44,411 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:44,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:44,412 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:44,412 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:44,412 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:44,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:44,413 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:44,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:44,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:44,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:44,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:44,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:44,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:44,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:44,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:44,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:44,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:44,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:44,416 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:44,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:44,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:44,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:44,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:44,417 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:44,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:44,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:44,417 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:44,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:44,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:44,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:44,465 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:44,466 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:44,467 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2019-10-02 16:29:44,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185c59f5a/46d9f90a924942a48511227c5c7c6a16/FLAG38474d3ce [2019-10-02 16:29:44,966 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:44,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2019-10-02 16:29:44,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185c59f5a/46d9f90a924942a48511227c5c7c6a16/FLAG38474d3ce [2019-10-02 16:29:45,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185c59f5a/46d9f90a924942a48511227c5c7c6a16 [2019-10-02 16:29:45,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:45,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:45,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:45,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:45,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:45,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45, skipping insertion in model container [2019-10-02 16:29:45,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:45,381 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:45,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:45,613 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:45,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:45,761 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:45,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45 WrapperNode [2019-10-02 16:29:45,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:45,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:45,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:45,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:45,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:45,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:45,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:45,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:45,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (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 [2019-10-02 16:29:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:46,165 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:46,165 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:29:46,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:46 BoogieIcfgContainer [2019-10-02 16:29:46,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:46,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:46,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:46,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:46,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:45" (1/3) ... [2019-10-02 16:29:46,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdfedca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:46, skipping insertion in model container [2019-10-02 16:29:46,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (2/3) ... [2019-10-02 16:29:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdfedca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:46, skipping insertion in model container [2019-10-02 16:29:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:46" (3/3) ... [2019-10-02 16:29:46,198 INFO L109 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_2_ground.i [2019-10-02 16:29:46,212 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:46,221 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:46,250 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:46,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:46,278 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:46,278 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:46,278 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:46,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:46,279 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:46,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:46,279 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-02 16:29:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:46,301 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,302 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:46,303 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1296691801, now seen corresponding path program 1 times [2019-10-02 16:29:46,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,366 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:46,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:46,444 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:46,469 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-10-02 16:29:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,490 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-02 16:29:46,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:46,492 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 16:29:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,503 INFO L225 Difference]: With dead ends: 31 [2019-10-02 16:29:46,503 INFO L226 Difference]: Without dead ends: 26 [2019-10-02 16:29:46,505 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 [2019-10-02 16:29:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-02 16:29:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-02 16:29:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-02 16:29:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-10-02 16:29:46,546 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-10-02 16:29:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,547 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-10-02 16:29:46,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-10-02 16:29:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:46,548 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,548 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:46,549 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1547542812, now seen corresponding path program 1 times [2019-10-02 16:29:46,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,552 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:46,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:46,621 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:46,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:46,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:46,623 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2019-10-02 16:29:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,656 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-10-02 16:29:46,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:46,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 16:29:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,660 INFO L225 Difference]: With dead ends: 28 [2019-10-02 16:29:46,660 INFO L226 Difference]: Without dead ends: 28 [2019-10-02 16:29:46,661 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 [2019-10-02 16:29:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-02 16:29:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-02 16:29:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-02 16:29:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-02 16:29:46,668 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2019-10-02 16:29:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,669 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-02 16:29:46,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-02 16:29:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:29:46,670 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,671 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:46,671 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1387426810, now seen corresponding path program 1 times [2019-10-02 16:29:46,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,678 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:46,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:46,759 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:46,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:46,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:46,760 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-10-02 16:29:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,785 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2019-10-02 16:29:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:46,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-02 16:29:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,788 INFO L225 Difference]: With dead ends: 31 [2019-10-02 16:29:46,789 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:29:46,790 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 [2019-10-02 16:29:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:29:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-02 16:29:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-02 16:29:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-10-02 16:29:46,799 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2019-10-02 16:29:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,799 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-10-02 16:29:46,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-10-02 16:29:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:29:46,801 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,802 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] [2019-10-02 16:29:46,802 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1108929549, now seen corresponding path program 1 times [2019-10-02 16:29:46,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,805 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:46,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:46,860 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,860 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:46,861 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 3 states. [2019-10-02 16:29:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,894 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-10-02 16:29:46,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:46,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-02 16:29:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,896 INFO L225 Difference]: With dead ends: 35 [2019-10-02 16:29:46,896 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 16:29:46,896 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 [2019-10-02 16:29:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 16:29:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-10-02 16:29:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:29:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-10-02 16:29:46,903 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2019-10-02 16:29:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,903 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-10-02 16:29:46,903 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-10-02 16:29:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:46,905 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,905 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, 1, 1, 1] [2019-10-02 16:29:46,906 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2055572838, now seen corresponding path program 1 times [2019-10-02 16:29:46,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,908 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:46,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:46,971 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:46,973 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-10-02 16:29:46,974 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [26], [28], [35], [37], [42], [44], [51], [59], [67], [81], [84], [86], [92], [93], [94], [96] [2019-10-02 16:29:47,006 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:47,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:47,071 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:47,073 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 25 variables. [2019-10-02 16:29:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:47,075 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:47,110 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:47,110 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:47,112 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-02 16:29:47,112 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:47,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:47,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:47,113 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:47,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:47,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:47,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:47,114 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 2 states. [2019-10-02 16:29:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:47,115 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:47,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:47,116 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-02 16:29:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:47,116 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:47,116 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:47,117 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:47,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-02 16:29:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:47,118 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:47,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:47,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:47,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:47 BoogieIcfgContainer [2019-10-02 16:29:47,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:47,127 INFO L168 Benchmark]: Toolchain (without parser) took 1779.16 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 87.9 MB in the beginning and 106.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,128 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.36 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 176.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,130 INFO L168 Benchmark]: Boogie Preprocessor took 63.29 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,131 INFO L168 Benchmark]: RCFGBuilder took 350.31 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 158.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,132 INFO L168 Benchmark]: TraceAbstraction took 943.12 ms. Allocated memory is still 199.8 MB. Free memory was 158.1 MB in the beginning and 106.7 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,136 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.36 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 176.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.29 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.31 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 158.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 943.12 ms. Allocated memory is still 199.8 MB. Free memory was 158.1 MB in the beginning and 106.7 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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 4 procedures, 31 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 132 SDtfs, 8 SDslu, 80 SDs, 0 SdLazy, 15 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9659090909090909 AbsIntWeakeningRatio, 0.7727272727272727 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 1818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...