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/ldv-regression/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:06:46,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:06:46,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:06:46,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:06:46,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:06:46,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:06:46,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:06:46,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:06:46,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:06:46,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:06:46,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:06:46,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:06:46,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:06:46,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:06:46,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:06:46,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:06:46,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:06:46,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:06:46,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:06:46,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:06:46,459 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 [2019-09-16 17:06:46,473 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:06:46,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:06:46,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:06:46,474 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:06:46,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:06:46,475 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:06:46,475 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:06:46,475 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:06:46,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:06:46,476 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:06:46,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:06:46,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:06:46,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:06:46,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:06:46,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:06:46,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:06:46,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:06:46,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:06:46,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:06:46,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:06:46,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:06:46,478 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:06:46,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:06:46,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:06:46,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:06:46,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:06:46,480 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:06:46,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:06:46,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:06:46,480 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:06:46,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:06:46,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:06:46,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:06:46,532 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:06:46,532 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:06:46,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2019-09-16 17:06:46,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb18c2727/04378e9f3fe24ccc864fc31096b25fd3/FLAG590c026f6 [2019-09-16 17:06:47,077 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:06:47,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test05.c [2019-09-16 17:06:47,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb18c2727/04378e9f3fe24ccc864fc31096b25fd3/FLAG590c026f6 [2019-09-16 17:06:47,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb18c2727/04378e9f3fe24ccc864fc31096b25fd3 [2019-09-16 17:06:47,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:06:47,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:06:47,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:06:47,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:06:47,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:06:47,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a2e2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47, skipping insertion in model container [2019-09-16 17:06:47,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:06:47,521 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:06:47,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:06:47,725 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:06:47,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:06:47,757 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:06:47,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47 WrapperNode [2019-09-16 17:06:47,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:06:47,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:06:47,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:06:47,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:06:47,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (1/1) ... [2019-09-16 17:06:47,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:06:47,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:06:47,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:06:47,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:06:47,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (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 [2019-09-16 17:06:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:06:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:06:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-09-16 17:06:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-16 17:06:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-16 17:06:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:06:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:06:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:06:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:06:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:06:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:06:48,316 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:06:48,316 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-16 17:06:48,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:06:48 BoogieIcfgContainer [2019-09-16 17:06:48,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:06:48,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:06:48,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:06:48,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:06:48,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:06:47" (1/3) ... [2019-09-16 17:06:48,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157375d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:06:48, skipping insertion in model container [2019-09-16 17:06:48,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:06:47" (2/3) ... [2019-09-16 17:06:48,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157375d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:06:48, skipping insertion in model container [2019-09-16 17:06:48,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:06:48" (3/3) ... [2019-09-16 17:06:48,326 INFO L109 eAbstractionObserver]: Analyzing ICFG test05.c [2019-09-16 17:06:48,335 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:06:48,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:06:48,359 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:06:48,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:06:48,380 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:06:48,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:06:48,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:06:48,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:06:48,380 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:06:48,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:06:48,381 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:06:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-16 17:06:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 17:06:48,400 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:06:48,401 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:06:48,402 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:06:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:06:48,408 INFO L82 PathProgramCache]: Analyzing trace with hash -685779266, now seen corresponding path program 1 times [2019-09-16 17:06:48,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:06:48,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:06:48,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,464 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:06:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:06:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:06:48,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:06:48,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:06:48,657 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:06:48,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:06:48,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:06:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:06:48,674 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-09-16 17:06:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:06:48,762 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-09-16 17:06:48,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:06:48,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-16 17:06:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:06:48,773 INFO L225 Difference]: With dead ends: 27 [2019-09-16 17:06:48,773 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 17:06:48,776 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:06:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 17:06:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-16 17:06:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 17:06:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-09-16 17:06:48,819 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-09-16 17:06:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:06:48,819 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-09-16 17:06:48,819 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:06:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-09-16 17:06:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-16 17:06:48,820 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:06:48,821 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:06:48,821 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:06:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:06:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash 636648720, now seen corresponding path program 1 times [2019-09-16 17:06:48,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:06:48,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:06:48,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:06:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:06:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:06:48,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:06:48,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:06:48,962 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:06:48,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:06:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:06:48,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:06:48,965 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 5 states. [2019-09-16 17:06:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:06:48,983 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-09-16 17:06:48,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:06:48,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-09-16 17:06:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:06:48,985 INFO L225 Difference]: With dead ends: 21 [2019-09-16 17:06:48,985 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 17:06:48,986 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:06:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 17:06:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-16 17:06:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 17:06:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-09-16 17:06:48,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2019-09-16 17:06:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:06:48,992 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-09-16 17:06:48,992 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:06:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-09-16 17:06:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 17:06:48,993 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:06:48,993 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:06:48,994 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:06:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:06:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1738724303, now seen corresponding path program 1 times [2019-09-16 17:06:48,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:06:48,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:06:48,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:06:48,997 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:06:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:06:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:06:49,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:06:49,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-16 17:06:49,326 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:06:49,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-16 17:06:49,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-16 17:06:49,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:06:49,327 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 10 states. [2019-09-16 17:06:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:06:49,615 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-09-16 17:06:49,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:06:49,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-09-16 17:06:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:06:49,617 INFO L225 Difference]: With dead ends: 19 [2019-09-16 17:06:49,617 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:06:49,618 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-16 17:06:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:06:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:06:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:06:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:06:49,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-16 17:06:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:06:49,619 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:06:49,620 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-16 17:06:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:06:49,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:06:49,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:06:49 BoogieIcfgContainer [2019-09-16 17:06:49,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:06:49,629 INFO L168 Benchmark]: Toolchain (without parser) took 2142.30 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 75.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,630 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.38 ms. Allocated memory is still 131.6 MB. Free memory was 85.7 MB in the beginning and 75.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,635 INFO L168 Benchmark]: Boogie Preprocessor took 134.64 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 75.4 MB in the beginning and 174.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,637 INFO L168 Benchmark]: RCFGBuilder took 424.71 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 155.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,638 INFO L168 Benchmark]: TraceAbstraction took 1307.05 ms. Allocated memory is still 198.7 MB. Free memory was 155.6 MB in the beginning and 75.2 MB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:06:49,650 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.38 ms. Allocated memory is still 131.6 MB. Free memory was 85.7 MB in the beginning and 75.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.64 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 75.4 MB in the beginning and 174.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.71 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 155.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1307.05 ms. Allocated memory is still 198.7 MB. Free memory was 155.6 MB in the beginning and 75.2 MB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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, 25 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 10 SDslu, 150 SDs, 0 SdLazy, 99 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 6277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...