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/loops/sum_array_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:45:10,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:45:10,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:45:10,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:45:10,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:45:10,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:45:10,043 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:45:10,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:45:10,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:45:10,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:45:10,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:45:10,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:45:10,061 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:45:10,062 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:45:10,063 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:45:10,064 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:45:10,065 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:45:10,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:45:10,069 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:45:10,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:45:10,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:45:10,080 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:45:10,083 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:45:10,094 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 11:45:10,119 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:45:10,119 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:45:10,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:45:10,121 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:45:10,122 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:45:10,122 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:45:10,123 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:45:10,123 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:45:10,123 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:45:10,123 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:45:10,123 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:45:10,125 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:45:10,125 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:45:10,125 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:45:10,125 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:45:10,126 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:45:10,126 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:45:10,126 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:45:10,126 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:45:10,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:45:10,127 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:45:10,128 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:45:10,128 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:45:10,128 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:45:10,129 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:45:10,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:45:10,129 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:45:10,129 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:45:10,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:45:10,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:45:10,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:45:10,203 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:45:10,203 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:45:10,204 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum_array_false-unreach-call.i [2018-10-24 11:45:10,265 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/266c70c07/227feb9119cd477cb830fc89a339af07/FLAGa248807e3 [2018-10-24 11:45:10,713 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:45:10,714 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_false-unreach-call.i [2018-10-24 11:45:10,720 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/266c70c07/227feb9119cd477cb830fc89a339af07/FLAGa248807e3 [2018-10-24 11:45:10,737 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/266c70c07/227feb9119cd477cb830fc89a339af07 [2018-10-24 11:45:10,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:45:10,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:45:10,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:10,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:45:10,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:45:10,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:10" (1/1) ... [2018-10-24 11:45:10,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a05e19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:10, skipping insertion in model container [2018-10-24 11:45:10,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:10" (1/1) ... [2018-10-24 11:45:10,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:45:10,793 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:45:11,004 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:11,009 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:45:11,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:11,056 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:45:11,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11 WrapperNode [2018-10-24 11:45:11,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:11,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:11,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:45:11,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:45:11,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:11,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:45:11,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:45:11,103 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:45:11,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (1/1) ... [2018-10-24 11:45:11,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:45:11,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:45:11,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:45:11,131 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:45:11,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (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 11:45:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-24 11:45:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-24 11:45:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:45:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:45:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-24 11:45:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-24 11:45:11,799 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:45:11,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:11 BoogieIcfgContainer [2018-10-24 11:45:11,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:45:11,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:45:11,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:45:11,804 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:45:11,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:10" (1/3) ... [2018-10-24 11:45:11,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161cb457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:11, skipping insertion in model container [2018-10-24 11:45:11,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:11" (2/3) ... [2018-10-24 11:45:11,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161cb457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:11, skipping insertion in model container [2018-10-24 11:45:11,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:11" (3/3) ... [2018-10-24 11:45:11,808 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_false-unreach-call.i [2018-10-24 11:45:11,818 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:45:11,827 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:45:11,845 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:45:11,880 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:45:11,881 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:45:11,881 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:45:11,881 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:45:11,881 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:45:11,882 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:45:11,882 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:45:11,882 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:45:11,882 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:45:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-10-24 11:45:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 11:45:11,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:11,908 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] [2018-10-24 11:45:11,911 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:11,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1077543020, now seen corresponding path program 1 times [2018-10-24 11:45:11,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:11,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:11,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:12,053 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 11:45:12,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:12,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:45:12,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:45:12,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:45:12,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:45:12,077 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-10-24 11:45:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:12,097 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2018-10-24 11:45:12,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:45:12,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-10-24 11:45:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:12,111 INFO L225 Difference]: With dead ends: 81 [2018-10-24 11:45:12,111 INFO L226 Difference]: Without dead ends: 37 [2018-10-24 11:45:12,115 INFO L605 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 [2018-10-24 11:45:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-24 11:45:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-24 11:45:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-24 11:45:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-10-24 11:45:12,155 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20 [2018-10-24 11:45:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:12,156 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-10-24 11:45:12,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:45:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-10-24 11:45:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 11:45:12,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:12,157 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] [2018-10-24 11:45:12,157 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:12,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -935536917, now seen corresponding path program 1 times [2018-10-24 11:45:12,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:12,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:12,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:12,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:12,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:12,313 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 11:45:12,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:12,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:45:12,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:45:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:45:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:12,316 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 4 states. [2018-10-24 11:45:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:12,825 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2018-10-24 11:45:12,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:45:12,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-24 11:45:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:12,828 INFO L225 Difference]: With dead ends: 99 [2018-10-24 11:45:12,829 INFO L226 Difference]: Without dead ends: 65 [2018-10-24 11:45:12,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:45:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-24 11:45:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2018-10-24 11:45:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-24 11:45:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-10-24 11:45:12,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2018-10-24 11:45:12,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:12,842 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-10-24 11:45:12,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:45:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-10-24 11:45:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 11:45:12,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:12,846 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 11:45:12,846 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:12,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1425916964, now seen corresponding path program 1 times [2018-10-24 11:45:12,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:12,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:12,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:12,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:12,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 11:45:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 11:45:13,145 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 11:45:13,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:45:13 BoogieIcfgContainer [2018-10-24 11:45:13,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:45:13,212 INFO L168 Benchmark]: Toolchain (without parser) took 2464.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -736.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:13,216 INFO L168 Benchmark]: CDTParser took 0.22 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 11:45:13,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.92 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. [2018-10-24 11:45:13,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.94 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. [2018-10-24 11:45:13,219 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 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. [2018-10-24 11:45:13,219 INFO L168 Benchmark]: RCFGBuilder took 668.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:13,221 INFO L168 Benchmark]: TraceAbstraction took 1411.29 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: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2018-10-24 11:45:13,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 306.92 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 44.94 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 27.94 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 668.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1411.29 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: 40.0 MB). Peak memory consumption was 40.0 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: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] FCALL int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i