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_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:52:14,536 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:52:14,538 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:52:14,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:52:14,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:52:14,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:52:14,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:52:14,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:52:14,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:52:14,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:52:14,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:52:14,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:52:14,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:52:14,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:52:14,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:52:14,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:52:14,564 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:52:14,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:52:14,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:52:14,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:52:14,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:52:14,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:52:14,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:52:14,579 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:52:14,579 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:52:14,580 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:52:14,581 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:52:14,583 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:52:14,584 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:52:14,585 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:52:14,585 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:52:14,586 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:52:14,589 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 [2018-10-24 16:52:14,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:52:14,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:52:14,614 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:52:14,614 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:52:14,614 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:52:14,615 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:52:14,615 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:52:14,615 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:52:14,615 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:52:14,615 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:52:14,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:52:14,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:52:14,616 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:52:14,616 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:52:14,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:52:14,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:52:14,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:52:14,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:52:14,617 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:52:14,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:52:14,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:52:14,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:52:14,618 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:52:14,618 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:52:14,618 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:52:14,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:52:14,619 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:52:14,619 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:52:14,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:52:14,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:52:14,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:52:14,679 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:52:14,680 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:52:14,681 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44_true-unreach-call.c [2018-10-24 16:52:14,740 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22c5f25e9/e1e18e40a41847f4999f244529768acf/FLAG1b6e62ce1 [2018-10-24 16:52:15,422 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:52:15,423 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label44_true-unreach-call.c [2018-10-24 16:52:15,450 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22c5f25e9/e1e18e40a41847f4999f244529768acf/FLAG1b6e62ce1 [2018-10-24 16:52:15,472 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22c5f25e9/e1e18e40a41847f4999f244529768acf [2018-10-24 16:52:15,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:52:15,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:52:15,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:52:15,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:52:15,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:52:15,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:15" (1/1) ... [2018-10-24 16:52:15,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cdce36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:15, skipping insertion in model container [2018-10-24 16:52:15,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:15" (1/1) ... [2018-10-24 16:52:15,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:52:15,635 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:52:16,564 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:52:16,569 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:52:16,986 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:52:17,013 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:52:17,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17 WrapperNode [2018-10-24 16:52:17,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:52:17,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:52:17,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:52:17,016 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:52:17,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:52:17,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:52:17,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:52:17,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:52:17,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (1/1) ... [2018-10-24 16:52:17,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:52:17,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:52:17,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:52:17,865 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:52:17,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (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 [2018-10-24 16:52:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:52:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:52:17,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:52:26,717 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:52:26,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:52:26 BoogieIcfgContainer [2018-10-24 16:52:26,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:52:26,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:52:26,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:52:26,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:52:26,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:52:15" (1/3) ... [2018-10-24 16:52:26,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11343618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:52:26, skipping insertion in model container [2018-10-24 16:52:26,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:17" (2/3) ... [2018-10-24 16:52:26,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11343618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:52:26, skipping insertion in model container [2018-10-24 16:52:26,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:52:26" (3/3) ... [2018-10-24 16:52:26,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label44_true-unreach-call.c [2018-10-24 16:52:26,742 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:52:26,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:52:26,770 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:52:26,815 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:52:26,816 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:52:26,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:52:26,817 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:52:26,817 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:52:26,817 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:52:26,817 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:52:26,817 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:52:26,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:52:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:52:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 16:52:26,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:52:26,860 INFO L375 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] [2018-10-24 16:52:26,862 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:52:26,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:52:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-10-24 16:52:26,871 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:52:26,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:52:26,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:52:26,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:52:26,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:52:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:52:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:52:27,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:52:27,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:52:27,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:52:27,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:52:27,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:52:27,318 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:52:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:52:37,361 INFO L93 Difference]: Finished difference Result 2078 states and 3883 transitions. [2018-10-24 16:52:37,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:52:37,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-24 16:52:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:52:37,402 INFO L225 Difference]: With dead ends: 2078 [2018-10-24 16:52:37,402 INFO L226 Difference]: Without dead ends: 1480 [2018-10-24 16:52:37,408 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 [2018-10-24 16:52:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2018-10-24 16:52:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1019. [2018-10-24 16:52:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-10-24 16:52:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1572 transitions. [2018-10-24 16:52:37,520 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1572 transitions. Word has length 36 [2018-10-24 16:52:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:52:37,521 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1572 transitions. [2018-10-24 16:52:37,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:52:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1572 transitions. [2018-10-24 16:52:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 16:52:37,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:52:37,529 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:52:37,529 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:52:37,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:52:37,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1524085169, now seen corresponding path program 1 times [2018-10-24 16:52:37,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:52:37,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:52:37,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:52:37,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:52:37,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:52:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:52:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:52:37,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:52:37,917 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 [2018-10-24 16:52:37,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:52:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:52:38,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:52:54,507 WARN L179 SmtUtils]: Spent 16.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 16:52:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:52:54,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:52:54,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:52:54,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:52:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:52:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:52:54,950 INFO L87 Difference]: Start difference. First operand 1019 states and 1572 transitions. Second operand 7 states. [2018-10-24 16:52:55,160 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 16:53:04,137 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 16:53:24,199 WARN L179 SmtUtils]: Spent 8.04 s on a formula simplification that was a NOOP. DAG size: 77 [2018-10-24 16:53:59,230 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-24 16:56:51,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:56:51,958 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:56:51,963 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:56:51,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:56:51 BoogieIcfgContainer [2018-10-24 16:56:51,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:56:51,965 INFO L168 Benchmark]: Toolchain (without parser) took 276479.69 ms. Allocated memory was 1.5 GB in the beginning and 2.6 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: -318.7 MB). Peak memory consumption was 768.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:51,966 INFO L168 Benchmark]: CDTParser took 0.29 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. [2018-10-24 16:56:51,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1526.74 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. [2018-10-24 16:56:51,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 562.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:51,968 INFO L168 Benchmark]: Boogie Preprocessor took 286.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:51,969 INFO L168 Benchmark]: RCFGBuilder took 8854.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 486.1 MB). Peak memory consumption was 486.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:51,970 INFO L168 Benchmark]: TraceAbstraction took 265243.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 320.9 MB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -83.5 MB). Peak memory consumption was 237.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:51,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 1526.74 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 562.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8854.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 486.1 MB). Peak memory consumption was 486.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265243.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 320.9 MB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -83.5 MB). Peak memory consumption was 237.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 113). Cancelled while BasicCegarLoop was constructing difference of abstraction (1019states) and FLOYD_HOARE automaton (currently 13 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (2759 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 265.1s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 247.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 698 SDtfs, 2729 SDslu, 745 SDs, 0 SdLazy, 6583 SolverSat, 1527 SolverUnsat, 96 SolverUnknown, 0 SolverNotchecked, 219.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1019occurred 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, 1 MinimizatonAttempts, 461 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 247 ConstructedInterpolants, 34 QuantifiedInterpolants, 664197 SizeOfPredicates, 1 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 33/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown