java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:29:59,689 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:29:59,691 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:29:59,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:29:59,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:29:59,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:29:59,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:29:59,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:29:59,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:29:59,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:29:59,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:29:59,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:29:59,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:29:59,713 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:29:59,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:29:59,715 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:29:59,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:29:59,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:29:59,721 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:29:59,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:29:59,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:29:59,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:29:59,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:29:59,737 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:29:59,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:29:59,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:29:59,755 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:29:59,755 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:29:59,756 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:29:59,758 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:29:59,758 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:29:59,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:29:59,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:29:59,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:29:59,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:29:59,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:29:59,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:29:59,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:29:59,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:29:59,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:29:59,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:29:59,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:29:59,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:29:59,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:29:59,762 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:29:59,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:29:59,763 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:29:59,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:29:59,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:29:59,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:29:59,847 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:29:59,847 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:29:59,848 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-10-23 18:29:59,920 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92b9d2f8e/cb8468cfb82b4d9fa4fe2492033b113c/FLAG029fda297 [2018-10-23 18:30:00,597 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:30:00,598 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-10-23 18:30:00,622 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92b9d2f8e/cb8468cfb82b4d9fa4fe2492033b113c/FLAG029fda297 [2018-10-23 18:30:00,639 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92b9d2f8e/cb8468cfb82b4d9fa4fe2492033b113c [2018-10-23 18:30:00,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:30:00,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:30:00,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:30:00,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:30:00,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:30:00,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:30:00" (1/1) ... [2018-10-23 18:30:00,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceffb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:00, skipping insertion in model container [2018-10-23 18:30:00,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:30:00" (1/1) ... [2018-10-23 18:30:00,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:30:00,785 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:30:01,804 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:30:01,809 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:30:02,180 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:30:02,204 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:30:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02 WrapperNode [2018-10-23 18:30:02,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:30:02,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:30:02,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:30:02,206 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:30:02,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:30:02,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:30:02,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:30:02,745 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:30:02,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:02,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:03,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... [2018-10-23 18:30:03,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:30:03,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:30:03,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:30:03,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:30:03,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:30:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:30:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:30:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:30:11,164 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:30:11,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:30:11 BoogieIcfgContainer [2018-10-23 18:30:11,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:30:11,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:30:11,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:30:11,175 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:30:11,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:30:00" (1/3) ... [2018-10-23 18:30:11,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9103df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:30:11, skipping insertion in model container [2018-10-23 18:30:11,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:02" (2/3) ... [2018-10-23 18:30:11,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9103df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:30:11, skipping insertion in model container [2018-10-23 18:30:11,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:30:11" (3/3) ... [2018-10-23 18:30:11,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54_false-unreach-call.c [2018-10-23 18:30:11,193 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:30:11,208 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:30:11,226 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:30:11,266 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:30:11,267 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:30:11,267 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:30:11,267 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:30:11,268 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:30:11,268 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:30:11,268 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:30:11,268 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:30:11,268 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:30:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:30:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 18:30:11,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:30:11,311 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:30:11,314 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:30:11,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:30:11,320 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-23 18:30:11,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:30:11,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:30:11,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:11,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:30:11,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:30:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:30:11,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:30:11,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:30:11,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:30:11,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:30:11,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:30:11,736 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:30:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:30:21,162 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-23 18:30:21,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:30:21,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-23 18:30:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:30:21,195 INFO L225 Difference]: With dead ends: 2097 [2018-10-23 18:30:21,195 INFO L226 Difference]: Without dead ends: 1499 [2018-10-23 18:30:21,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:30:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-23 18:30:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-23 18:30:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-23 18:30:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-23 18:30:21,337 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 14 [2018-10-23 18:30:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:30:21,337 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-23 18:30:21,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:30:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-23 18:30:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-23 18:30:21,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:30:21,343 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:30:21,343 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:30:21,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:30:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash -843989150, now seen corresponding path program 1 times [2018-10-23 18:30:21,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:30:21,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:30:21,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:21,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:30:21,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:30:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:30:21,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:30:21,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:30:21,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:30:21,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:30:21,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:30:21,679 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-23 18:30:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:30:29,815 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-23 18:30:29,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:30:29,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2018-10-23 18:30:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:30:29,830 INFO L225 Difference]: With dead ends: 4257 [2018-10-23 18:30:29,830 INFO L226 Difference]: Without dead ends: 2774 [2018-10-23 18:30:29,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:30:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-23 18:30:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-23 18:30:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-23 18:30:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-23 18:30:29,912 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 82 [2018-10-23 18:30:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:30:29,913 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-23 18:30:29,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:30:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-23 18:30:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-23 18:30:29,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:30:29,919 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:30:29,919 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:30:29,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:30:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash 910712919, now seen corresponding path program 1 times [2018-10-23 18:30:29,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:30:29,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:30:29,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:29,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:30:29,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:30:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:30:30,416 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-23 18:30:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:30:30,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:30:30,438 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:30:30,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:30:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:30:30,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:30:47,096 WARN L179 SmtUtils]: Spent 16.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 18:30:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:30:47,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:30:47,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:30:47,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:30:47,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:30:47,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:30:47,287 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states. [2018-10-23 18:30:57,330 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 18:31:06,926 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-23 18:34:34,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:34:34,989 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:34:34,995 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:34:34,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:34:34 BoogieIcfgContainer [2018-10-23 18:34:34,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:34:34,996 INFO L168 Benchmark]: Toolchain (without parser) took 274344.68 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.8 MB). Peak memory consumption was 350.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:34:34,998 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:34:34,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1551.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:34:34,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 538.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:34:35,000 INFO L168 Benchmark]: Boogie Preprocessor took 390.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:34:35,002 INFO L168 Benchmark]: RCFGBuilder took 8032.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.1 MB). Peak memory consumption was 481.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:34:35,003 INFO L168 Benchmark]: TraceAbstraction took 263827.07 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 339.2 MB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -522.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:34:35,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1551.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 538.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 390.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8032.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.1 MB). Peak memory consumption was 481.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263827.07 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 339.2 MB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -522.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 47). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7184 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 263.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 245.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1163 SDtfs, 4664 SDslu, 745 SDs, 0 SdLazy, 7849 SolverSat, 2561 SolverUnsat, 95 SolverUnknown, 0 SolverNotchecked, 225.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2774occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 262 ConstructedInterpolants, 12 QuantifiedInterpolants, 242314 SizeOfPredicates, 1 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 22/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown