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_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:29:13,459 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:29:13,463 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:29:13,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:29:13,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:29:13,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:29:13,483 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:29:13,485 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:29:13,487 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:29:13,488 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:29:13,489 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:29:13,489 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:29:13,490 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:29:13,491 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:29:13,492 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:29:13,493 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:29:13,494 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:29:13,496 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:29:13,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:29:13,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:29:13,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:29:13,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:29:13,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:29:13,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:29:13,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:29:13,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:29:13,514 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:29:13,517 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:29:13,518 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:29:13,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:29:13,520 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:29:13,520 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:29:13,526 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 18:29:13,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:29:13,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:29:13,555 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:29:13,555 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:29:13,556 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:29:13,556 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:29:13,556 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:29:13,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:29:13,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:29:13,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:29:13,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:29:13,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:29:13,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:29:13,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:29:13,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:29:13,560 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:29:13,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:29:13,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:29:13,561 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:29:13,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:29:13,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:29:13,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:29:13,562 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:29:13,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:29:13,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:29:13,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:29:13,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:29:13,633 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:29:13,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-23 18:29:13,699 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e398efc4f/0ad7241c786c4fb99b235ceb26001ddd/FLAG7d22f6fec [2018-10-23 18:29:14,433 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:29:14,434 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-23 18:29:14,456 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e398efc4f/0ad7241c786c4fb99b235ceb26001ddd/FLAG7d22f6fec [2018-10-23 18:29:14,471 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e398efc4f/0ad7241c786c4fb99b235ceb26001ddd [2018-10-23 18:29:14,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:29:14,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:29:14,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:29:14,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:29:14,490 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:29:14,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:29:14" (1/1) ... [2018-10-23 18:29:14,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cf1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:14, skipping insertion in model container [2018-10-23 18:29:14,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:29:14" (1/1) ... [2018-10-23 18:29:14,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:29:14,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:29:15,597 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:29:15,602 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:29:16,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:29:16,062 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:29:16,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16 WrapperNode [2018-10-23 18:29:16,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:29:16,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:29:16,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:29:16,065 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:29:16,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:29:16,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:29:16,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:29:16,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:29:16,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (1/1) ... [2018-10-23 18:29:16,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:29:16,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:29:16,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:29:16,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:29:16,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (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 18:29:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:29:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:29:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:29:28,234 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:29:28,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:29:28 BoogieIcfgContainer [2018-10-23 18:29:28,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:29:28,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:29:28,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:29:28,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:29:28,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:29:14" (1/3) ... [2018-10-23 18:29:28,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ba676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:29:28, skipping insertion in model container [2018-10-23 18:29:28,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:16" (2/3) ... [2018-10-23 18:29:28,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ba676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:29:28, skipping insertion in model container [2018-10-23 18:29:28,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:29:28" (3/3) ... [2018-10-23 18:29:28,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label49_false-unreach-call.c [2018-10-23 18:29:28,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:29:28,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:29:28,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:29:28,345 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:29:28,346 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:29:28,346 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:29:28,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:29:28,347 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:29:28,347 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:29:28,347 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:29:28,347 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:29:28,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:29:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:29:28,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 18:29:28,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:28,402 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:29:28,405 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:28,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-23 18:29:28,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:28,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:28,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:28,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:28,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:28,812 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 18:29:28,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:29:28,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:29:28,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:29:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:29:28,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:29:28,835 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:29:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:39,514 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-23 18:29:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:29:39,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-23 18:29:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:39,553 INFO L225 Difference]: With dead ends: 2102 [2018-10-23 18:29:39,554 INFO L226 Difference]: Without dead ends: 1504 [2018-10-23 18:29:39,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:29:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-23 18:29:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-23 18:29:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-23 18:29:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-23 18:29:39,696 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 16 [2018-10-23 18:29:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:39,696 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-23 18:29:39,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:29:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-23 18:29:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-23 18:29:39,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:39,700 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:29:39,701 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:39,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:39,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1026881206, now seen corresponding path program 1 times [2018-10-23 18:29:39,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:39,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:39,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:39,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:39,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:39,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:29:39,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:29:39,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:29:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:29:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:29:39,966 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-23 18:29:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:48,325 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-23 18:29:48,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:29:48,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2018-10-23 18:29:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:48,342 INFO L225 Difference]: With dead ends: 4268 [2018-10-23 18:29:48,342 INFO L226 Difference]: Without dead ends: 2779 [2018-10-23 18:29:48,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:29:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-23 18:29:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-23 18:29:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-23 18:29:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-23 18:29:48,406 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 84 [2018-10-23 18:29:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:48,406 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-23 18:29:48,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:29:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-23 18:29:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-23 18:29:48,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:48,410 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:29:48,411 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:48,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:48,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2006222143, now seen corresponding path program 1 times [2018-10-23 18:29:48,411 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:48,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:48,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:48,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:48,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:48,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:29:48,736 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 18:29:48,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:48,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:30:05,332 WARN L179 SmtUtils]: Spent 16.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 18:30:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:30:05,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:30:05,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:30:05,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:30:05,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:30:05,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:30:05,558 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 7 states. [2018-10-23 18:30:15,506 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 18:30:25,014 WARN L179 SmtUtils]: Spent 8.04 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-23 18:33:46,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:33:46,025 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:33:46,030 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:33:46,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:33:46 BoogieIcfgContainer [2018-10-23 18:33:46,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:33:46,031 INFO L168 Benchmark]: Toolchain (without parser) took 271547.81 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 1.7 GB in the end (delta: -238.6 MB). Peak memory consumption was 893.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:46,032 INFO L168 Benchmark]: CDTParser took 0.25 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 18:33:46,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1577.90 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 18:33:46,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 589.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:46,035 INFO L168 Benchmark]: Boogie Preprocessor took 326.15 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: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:46,036 INFO L168 Benchmark]: RCFGBuilder took 11255.02 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: 468.1 MB). Peak memory consumption was 468.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:46,037 INFO L168 Benchmark]: TraceAbstraction took 257792.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 322.4 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 46.7 MB). Peak memory consumption was 369.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:46,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1577.90 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 589.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 326.15 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: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11255.02 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: 468.1 MB). Peak memory consumption was 468.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257792.72 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 322.4 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 46.7 MB). Peak memory consumption was 369.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 53). Cancelled while BasicCegarLoop was constructing difference of abstraction (2779states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (13595 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1182 SDtfs, 6335 SDslu, 815 SDs, 0 SdLazy, 10161 SolverSat, 3365 SolverUnsat, 89 SolverUnknown, 0 SolverNotchecked, 219.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2779occurred 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 270 ConstructedInterpolants, 14 QuantifiedInterpolants, 276382 SizeOfPredicates, 1 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 26/39 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown