java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:36:26,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:36:26,861 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:36:26,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:36:26,874 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:36:26,875 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:36:26,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:36:26,878 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:36:26,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:36:26,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:36:26,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:36:26,882 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:36:26,883 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:36:26,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:36:26,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:36:26,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:36:26,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:36:26,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:36:26,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:36:26,892 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:36:26,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:36:26,895 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:36:26,897 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:36:26,907 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:36:26,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:36:26,924 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:36:26,925 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:36:26,925 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:36:26,925 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:36:26,926 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:36:26,926 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:36:26,926 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:36:26,926 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:36:26,927 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:36:26,928 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:36:26,928 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:36:26,928 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:36:26,928 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:36:26,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:36:26,929 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:36:26,929 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:36:26,929 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:36:26,929 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:36:26,929 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:36:26,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:36:26,930 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:36:26,930 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:36:26,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:36:26,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:36:26,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:36:26,995 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:36:26,995 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:36:26,996 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i [2018-11-06 22:36:27,063 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8849a2eda/57b384b7efd24f54825543b403af5cf3/FLAGf5c77edee [2018-11-06 22:36:27,572 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:36:27,574 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i [2018-11-06 22:36:27,584 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8849a2eda/57b384b7efd24f54825543b403af5cf3/FLAGf5c77edee [2018-11-06 22:36:27,606 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8849a2eda/57b384b7efd24f54825543b403af5cf3 [2018-11-06 22:36:27,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:36:27,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:36:27,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:36:27,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:36:27,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:36:27,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f402158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27, skipping insertion in model container [2018-11-06 22:36:27,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:36:27,662 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:36:27,915 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:36:27,919 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:36:27,938 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:36:27,954 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:36:27,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27 WrapperNode [2018-11-06 22:36:27,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:36:27,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:36:27,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:36:27,956 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:36:27,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:36:27,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:36:27,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:36:27,990 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:36:27,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:27,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:28,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:28,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:28,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:28,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... [2018-11-06 22:36:28,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:36:28,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:36:28,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:36:28,018 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:36:28,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:36:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:36:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:36:28,455 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:36:28,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:28 BoogieIcfgContainer [2018-11-06 22:36:28,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:36:28,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:36:28,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:36:28,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:36:28,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:27" (1/3) ... [2018-11-06 22:36:28,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284b9f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:28, skipping insertion in model container [2018-11-06 22:36:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27" (2/3) ... [2018-11-06 22:36:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284b9f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:28, skipping insertion in model container [2018-11-06 22:36:28,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:28" (3/3) ... [2018-11-06 22:36:28,478 INFO L112 eAbstractionObserver]: Analyzing ICFG nec20_false-unreach-call_true-termination.i [2018-11-06 22:36:28,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:36:28,500 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:36:28,519 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:36:28,553 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:36:28,553 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:36:28,553 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:36:28,554 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:36:28,554 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:36:28,554 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:36:28,554 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:36:28,554 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:36:28,555 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:36:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-06 22:36:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-06 22:36:28,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:28,578 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:36:28,580 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:28,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash -591914901, now seen corresponding path program 1 times [2018-11-06 22:36:28,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:28,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:28,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:28,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:28,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:36:28,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:36:28,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:36:28,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:36:28,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:36:28,740 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-11-06 22:36:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:36:28,756 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2018-11-06 22:36:28,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:36:28,758 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-06 22:36:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:36:28,769 INFO L225 Difference]: With dead ends: 27 [2018-11-06 22:36:28,770 INFO L226 Difference]: Without dead ends: 11 [2018-11-06 22:36:28,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:36:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-06 22:36:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-06 22:36:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-06 22:36:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-11-06 22:36:28,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2018-11-06 22:36:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:36:28,811 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-06 22:36:28,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:36:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-11-06 22:36:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-06 22:36:28,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:28,813 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:36:28,814 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:28,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:28,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1177062573, now seen corresponding path program 1 times [2018-11-06 22:36:28,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:28,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:28,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:28,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:36:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:36:28,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:36:28,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:36:28,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:36:28,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:36:28,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:36:28,992 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-11-06 22:36:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:36:29,193 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-06 22:36:29,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:36:29,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-06 22:36:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:36:29,195 INFO L225 Difference]: With dead ends: 17 [2018-11-06 22:36:29,195 INFO L226 Difference]: Without dead ends: 13 [2018-11-06 22:36:29,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:36:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-06 22:36:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-06 22:36:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-06 22:36:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-06 22:36:29,202 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-06 22:36:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:36:29,203 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-06 22:36:29,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:36:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-06 22:36:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-06 22:36:29,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:36:29,204 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:36:29,204 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:36:29,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:36:29,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1532982643, now seen corresponding path program 1 times [2018-11-06 22:36:29,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:36:29,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:36:29,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:29,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:36:29,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:36:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-06 22:36:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-06 22:36:29,261 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-06 22:36:29,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:36:29 BoogieIcfgContainer [2018-11-06 22:36:29,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:36:29,289 INFO L168 Benchmark]: Toolchain (without parser) took 1672.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -754.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:36:29,291 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-06 22:36:29,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:36:29,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:36:29,296 INFO L168 Benchmark]: Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:36:29,297 INFO L168 Benchmark]: RCFGBuilder took 438.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.9 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-11-06 22:36:29,300 INFO L168 Benchmark]: TraceAbstraction took 831.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-11-06 22:36:29,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 336.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 438.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.9 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 831.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int b; VAL [b=0] [L13] _Bool k=__VERIFIER_nondet_bool(); [L14] int i,n,j; [L15] int a[1025]; VAL [b=0] [L17] COND TRUE \read(k) [L18] n=0 VAL [b=0] [L23] i=0 [L24] j=__VERIFIER_nondet_int() [L25] COND FALSE !(j > 10000) VAL [b=0] [L28] COND TRUE i <= n [L29] i++ [L30] j= j +2 VAL [b=0] [L28] COND FALSE !(i <= n) VAL [b=0] [L33] a[i]=0 [L34] a[j]=0 [L35] CALL __VERIFIER_assert(j<1025) [L5] COND TRUE !(cond) VAL [b=0] [L6] __VERIFIER_error() VAL [b=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 9 SDslu, 5 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...