java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 11:56:08,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 11:56:08,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 11:56:08,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 11:56:08,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 11:56:08,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 11:56:08,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 11:56:08,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 11:56:08,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 11:56:08,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 11:56:08,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 11:56:08,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 11:56:08,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 11:56:08,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 11:56:08,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 11:56:08,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 11:56:08,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 11:56:08,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 11:56:08,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 11:56:08,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 11:56:08,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 11:56:08,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 11:56:08,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 11:56:08,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 11:56:08,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 11:56:08,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 11:56:08,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 11:56:08,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 11:56:08,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 11:56:08,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 11:56:08,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 11:56:08,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 11:56:08,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 11:56:08,724 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 11:56:08,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 11:56:08,724 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 11:56:08,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 11:56:08,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 11:56:08,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 11:56:08,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 11:56:08,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 11:56:08,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 11:56:08,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 11:56:08,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 11:56:08,730 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 11:56:08,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 11:56:08,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 11:56:08,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 11:56:08,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 11:56:08,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 11:56:08,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 11:56:08,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 11:56:08,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 11:56:08,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 11:56:08,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 11:56:08,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 11:56:08,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 11:56:08,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 11:56:08,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 11:56:08,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 11:56:08,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 11:56:08,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 11:56:08,803 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 11:56:08,803 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2019-09-07 11:56:08,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a7e5262/ec52824bddf94888be25b4b65d04bc55/FLAGf2ef26312 [2019-09-07 11:56:09,325 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 11:56:09,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bor5.i [2019-09-07 11:56:09,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a7e5262/ec52824bddf94888be25b4b65d04bc55/FLAGf2ef26312 [2019-09-07 11:56:09,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a7e5262/ec52824bddf94888be25b4b65d04bc55 [2019-09-07 11:56:09,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 11:56:09,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 11:56:09,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 11:56:09,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 11:56:09,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 11:56:09,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:09,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e80a95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09, skipping insertion in model container [2019-09-07 11:56:09,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:09,710 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 11:56:09,729 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 11:56:09,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 11:56:09,916 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 11:56:09,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 11:56:09,954 INFO L192 MainTranslator]: Completed translation [2019-09-07 11:56:09,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09 WrapperNode [2019-09-07 11:56:09,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 11:56:09,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 11:56:09,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 11:56:09,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 11:56:10,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... [2019-09-07 11:56:10,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 11:56:10,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 11:56:10,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 11:56:10,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 11:56:10,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 11:56:10,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 11:56:10,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 11:56:10,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2019-09-07 11:56:10,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 11:56:10,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-07 11:56:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-07 11:56:10,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-07 11:56:10,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 11:56:10,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 11:56:10,495 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 11:56:10,495 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-07 11:56:10,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:56:10 BoogieIcfgContainer [2019-09-07 11:56:10,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 11:56:10,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 11:56:10,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 11:56:10,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 11:56:10,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:56:09" (1/3) ... [2019-09-07 11:56:10,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de5f218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:56:10, skipping insertion in model container [2019-09-07 11:56:10,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:56:09" (2/3) ... [2019-09-07 11:56:10,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de5f218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:56:10, skipping insertion in model container [2019-09-07 11:56:10,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:56:10" (3/3) ... [2019-09-07 11:56:10,507 INFO L109 eAbstractionObserver]: Analyzing ICFG bor5.i [2019-09-07 11:56:10,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 11:56:10,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 11:56:10,538 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 11:56:10,564 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 11:56:10,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 11:56:10,565 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 11:56:10,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 11:56:10,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 11:56:10,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 11:56:10,566 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 11:56:10,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 11:56:10,566 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 11:56:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-07 11:56:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-07 11:56:10,588 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:56:10,590 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:56:10,592 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:56:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:56:10,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2019-09-07 11:56:10,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:56:10,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:56:10,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:10,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:10,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:56:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-07 11:56:10,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:56:10,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 11:56:10,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 11:56:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 11:56:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 11:56:10,813 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-07 11:56:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:56:10,838 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-09-07 11:56:10,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 11:56:10,840 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-09-07 11:56:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:56:10,849 INFO L225 Difference]: With dead ends: 57 [2019-09-07 11:56:10,850 INFO L226 Difference]: Without dead ends: 27 [2019-09-07 11:56:10,853 INFO L628 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 [2019-09-07 11:56:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-07 11:56:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-07 11:56:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-07 11:56:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-07 11:56:10,900 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-09-07 11:56:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:56:10,901 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-07 11:56:10,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 11:56:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-07 11:56:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-07 11:56:10,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:56:10,904 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:56:10,904 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:56:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:56:10,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2019-09-07 11:56:10,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:56:10,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:56:10,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:10,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:56:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-07 11:56:11,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:56:11,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 11:56:11,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 11:56:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 11:56:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 11:56:11,019 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-09-07 11:56:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:56:11,075 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-09-07 11:56:11,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 11:56:11,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-09-07 11:56:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:56:11,077 INFO L225 Difference]: With dead ends: 47 [2019-09-07 11:56:11,078 INFO L226 Difference]: Without dead ends: 29 [2019-09-07 11:56:11,079 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 11:56:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-07 11:56:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-09-07 11:56:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-07 11:56:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-07 11:56:11,088 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-09-07 11:56:11,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:56:11,088 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-07 11:56:11,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 11:56:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-07 11:56:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-07 11:56:11,090 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:56:11,090 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:56:11,091 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:56:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:56:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2019-09-07 11:56:11,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:56:11,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:56:11,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:11,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:56:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 11:56:11,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:56:11,252 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-09-07 11:56:11,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:56:11,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 11:56:11,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:56:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 11:56:11,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:56:11,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-09-07 11:56:11,398 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 11:56:11,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 11:56:11,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 11:56:11,399 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2019-09-07 11:56:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:56:11,567 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-09-07 11:56:11,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 11:56:11,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-09-07 11:56:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:56:11,571 INFO L225 Difference]: With dead ends: 51 [2019-09-07 11:56:11,571 INFO L226 Difference]: Without dead ends: 33 [2019-09-07 11:56:11,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 11:56:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-07 11:56:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-09-07 11:56:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-07 11:56:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-09-07 11:56:11,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35 [2019-09-07 11:56:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:56:11,591 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-09-07 11:56:11,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 11:56:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-09-07 11:56:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-07 11:56:11,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:56:11,595 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:56:11,595 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:56:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:56:11,595 INFO L82 PathProgramCache]: Analyzing trace with hash 476203942, now seen corresponding path program 1 times [2019-09-07 11:56:11,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:56:11,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:56:11,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:11,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:56:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-07 11:56:11,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:56:11,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 11:56:11,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 11:56:11,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 11:56:11,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 11:56:11,754 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-09-07 11:56:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:56:11,823 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-09-07 11:56:11,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 11:56:11,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-09-07 11:56:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:56:11,825 INFO L225 Difference]: With dead ends: 46 [2019-09-07 11:56:11,825 INFO L226 Difference]: Without dead ends: 33 [2019-09-07 11:56:11,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 11:56:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-07 11:56:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-09-07 11:56:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-07 11:56:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-09-07 11:56:11,843 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2019-09-07 11:56:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:56:11,845 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-09-07 11:56:11,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 11:56:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-09-07 11:56:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-07 11:56:11,851 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:56:11,854 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-09-07 11:56:11,855 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:56:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:56:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash -106794812, now seen corresponding path program 1 times [2019-09-07 11:56:11,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:56:11,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:56:11,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:56:11,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:56:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 11:56:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 11:56:12,060 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-07 11:56:12,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.09 11:56:12 BoogieIcfgContainer [2019-09-07 11:56:12,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-07 11:56:12,121 INFO L168 Benchmark]: Toolchain (without parser) took 2427.40 ms. Allocated memory was 131.1 MB in the beginning and 218.6 MB in the end (delta: 87.6 MB). Free memory was 87.7 MB in the beginning and 182.3 MB in the end (delta: -94.6 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,122 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.1 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 131.1 MB. Free memory was 87.3 MB in the beginning and 76.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,124 INFO L168 Benchmark]: Boogie Preprocessor took 151.77 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 76.9 MB in the beginning and 174.4 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,125 INFO L168 Benchmark]: RCFGBuilder took 389.81 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 157.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,126 INFO L168 Benchmark]: TraceAbstraction took 1620.36 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 157.4 MB in the beginning and 182.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2019-09-07 11:56:12,131 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 131.1 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 131.1 MB. Free memory was 87.3 MB in the beginning and 76.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.77 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 76.9 MB in the beginning and 174.4 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.81 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 157.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1620.36 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 157.4 MB in the beginning and 182.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 14. Possible FailurePath: [L6] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; VAL [\old(N)=0, i=0, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=1, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}] [L29] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}] [L34] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=0, i=2, N=2, res=0, x={1:0}, x={1:0}] [L34] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=0, i=2, N=2, x={1:0}] [L34] ret = bor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp VAL [\old(N)=0, i=2, N=2, ret=0, temp=0, x={1:0}] [L37] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=1, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=-2, i=2, N=2, res=4294967294, x={1:0}, x={1:0}] [L37] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=-2, i=2, N=2, ret=0, temp=0, x={1:0}] [L37] ret2 = bor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [\old(N)=0, i=0, i=2, N=2, ret=0, ret2=-2, temp=1, x={1:0}] [L39] COND TRUE i