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/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:14:58,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:14:58,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:14:58,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:14:58,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:14:58,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:14:58,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:14:58,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:14:58,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:14:58,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:14:58,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:14:58,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:14:58,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:14:58,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:14:58,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:14:58,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:14:58,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:14:58,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 17:14:58,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 17:14:58,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 17:14:58,567 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 17:14:58,582 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:14:58,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:14:58,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:14:58,583 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:14:58,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:14:58,583 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:14:58,584 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:14:58,584 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:14:58,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:14:58,584 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:14:58,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:14:58,585 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:14:58,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:14:58,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:14:58,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:14:58,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:14:58,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:14:58,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:14:58,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:14:58,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:14:58,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:14:58,587 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:14:58,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:14:58,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:14:58,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:14:58,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:14:58,588 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:14:58,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:14:58,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:14:58,589 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:14:58,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:14:58,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:14:58,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:14:58,648 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:14:58,648 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:14:58,649 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2019-10-02 17:14:58,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de61bb906/2f2a8a5344a54ea390c577f503b5adc8/FLAGa1fb9e7cd [2019-10-02 17:14:59,249 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:14:59,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2019-10-02 17:14:59,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de61bb906/2f2a8a5344a54ea390c577f503b5adc8/FLAGa1fb9e7cd [2019-10-02 17:14:59,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de61bb906/2f2a8a5344a54ea390c577f503b5adc8 [2019-10-02 17:14:59,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:14:59,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:14:59,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:14:59,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:14:59,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:14:59,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:14:59" (1/1) ... [2019-10-02 17:14:59,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3205cab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:14:59, skipping insertion in model container [2019-10-02 17:14:59,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:14:59" (1/1) ... [2019-10-02 17:14:59,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:14:59,594 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:15:00,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:15:00,096 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:15:00,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:15:00,268 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:15:00,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00 WrapperNode [2019-10-02 17:15:00,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:15:00,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:15:00,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:15:00,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:15:00,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (1/1) ... [2019-10-02 17:15:00,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:15:00,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:15:00,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:15:00,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:15:00,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (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 17:15:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:15:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:15:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:15:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:15:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:15:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:15:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:15:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:15:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:15:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:15:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:15:01,641 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:15:01,642 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:15:01,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:15:01 BoogieIcfgContainer [2019-10-02 17:15:01,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:15:01,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:15:01,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:15:01,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:15:01,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:14:59" (1/3) ... [2019-10-02 17:15:01,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dee9138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:15:01, skipping insertion in model container [2019-10-02 17:15:01,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:15:00" (2/3) ... [2019-10-02 17:15:01,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dee9138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:15:01, skipping insertion in model container [2019-10-02 17:15:01,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:15:01" (3/3) ... [2019-10-02 17:15:01,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2019-10-02 17:15:01,664 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:15:01,673 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:15:01,690 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:15:01,736 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:15:01,737 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:15:01,737 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:15:01,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:15:01,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:15:01,738 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:15:01,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:15:01,738 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:15:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 17:15:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-02 17:15:01,799 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:15:01,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:01,804 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:15:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:15:01,812 INFO L82 PathProgramCache]: Analyzing trace with hash 575241111, now seen corresponding path program 1 times [2019-10-02 17:15:01,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:15:01,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:15:01,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:15:01,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:15:01,879 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:15:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:15:02,370 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 17:15:02,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:15:02,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:15:02,373 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:15:02,380 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:15:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:15:02,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:15:02,398 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-02 17:15:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:15:03,337 INFO L93 Difference]: Finished difference Result 346 states and 517 transitions. [2019-10-02 17:15:03,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:15:03,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-02 17:15:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:15:03,369 INFO L225 Difference]: With dead ends: 346 [2019-10-02 17:15:03,369 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 17:15:03,372 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:15:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 17:15:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 17:15:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 17:15:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-10-02 17:15:03,442 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 105 [2019-10-02 17:15:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:15:03,443 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-10-02 17:15:03,443 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:15:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-10-02 17:15:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-02 17:15:03,448 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:15:03,448 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:03,449 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:15:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:15:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1810188758, now seen corresponding path program 1 times [2019-10-02 17:15:03,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:15:03,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:15:03,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:15:03,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:15:03,452 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:15:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:15:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:15:03,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:15:03,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 17:15:03,629 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:15:03,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 17:15:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 17:15:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 17:15:03,631 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 4 states. [2019-10-02 17:15:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:15:04,560 INFO L93 Difference]: Finished difference Result 681 states and 959 transitions. [2019-10-02 17:15:04,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 17:15:04,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-02 17:15:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:15:04,562 INFO L225 Difference]: With dead ends: 681 [2019-10-02 17:15:04,562 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 17:15:04,563 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 17:15:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 17:15:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 17:15:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 17:15:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 17:15:04,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2019-10-02 17:15:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:15:04,564 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 17:15:04,564 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 17:15:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 17:15:04,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 17:15:04,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 05:15:04 BoogieIcfgContainer [2019-10-02 17:15:04,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 17:15:04,571 INFO L168 Benchmark]: Toolchain (without parser) took 5055.54 ms. Allocated memory was 132.6 MB in the beginning and 268.4 MB in the end (delta: 135.8 MB). Free memory was 86.8 MB in the beginning and 147.4 MB in the end (delta: -60.6 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,572 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.32 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 86.6 MB in the beginning and 166.9 MB in the end (delta: -80.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,574 INFO L168 Benchmark]: Boogie Preprocessor took 120.27 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 161.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,575 INFO L168 Benchmark]: RCFGBuilder took 1253.88 ms. Allocated memory was 202.9 MB in the beginning and 226.5 MB in the end (delta: 23.6 MB). Free memory was 161.5 MB in the beginning and 177.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,577 INFO L168 Benchmark]: TraceAbstraction took 2922.86 ms. Allocated memory was 226.5 MB in the beginning and 268.4 MB in the end (delta: 41.9 MB). Free memory was 177.1 MB in the beginning and 147.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2019-10-02 17:15:04,581 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 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.32 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 86.6 MB in the beginning and 166.9 MB in the end (delta: -80.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.27 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 161.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1253.88 ms. Allocated memory was 202.9 MB in the beginning and 226.5 MB in the end (delta: 23.6 MB). Free memory was 161.5 MB in the beginning and 177.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2922.86 ms. Allocated memory was 226.5 MB in the beginning and 268.4 MB in the end (delta: 41.9 MB). Free memory was 177.1 MB in the beginning and 147.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 473]: 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, 207 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 294 SDslu, 35 SDs, 0 SdLazy, 1067 SolverSat, 273 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 92976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...