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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:31:54,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:31:54,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:31:54,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:31:54,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:31:54,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:31:54,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:31:54,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:31:54,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:31:54,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:31:54,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:31:54,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:31:54,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:31:54,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:31:54,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:31:54,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:31:54,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:31:54,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:31:54,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:31:54,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:31:54,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:31:54,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:31:54,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:31:54,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:31:54,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 02:31:54,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:31:54,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:31:54,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:31:54,956 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 [2019-09-08 02:31:54,982 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:31:54,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:31:54,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:31:54,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:31:54,985 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:31:54,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:31:54,986 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:31:54,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:31:54,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:31:54,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:31:54,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:31:54,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:31:54,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:31:54,988 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:31:54,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:31:54,989 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:31:54,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:31:54,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:31:54,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:31:54,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:31:54,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:31:54,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:31:54,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:31:54,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:31:54,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:31:54,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:31:54,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:31:54,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:31:54,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:31:55,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:31:55,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:31:55,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:31:55,055 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:31:55,055 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:31:55,056 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2019-09-08 02:31:55,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4182efeb/b5461dbbe7124a3ba7699c999afbf198/FLAGc3d39f7d0 [2019-09-08 02:31:55,497 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:31:55,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2019-09-08 02:31:55,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4182efeb/b5461dbbe7124a3ba7699c999afbf198/FLAGc3d39f7d0 [2019-09-08 02:31:55,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4182efeb/b5461dbbe7124a3ba7699c999afbf198 [2019-09-08 02:31:55,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:31:55,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:31:55,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:31:55,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:31:55,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:31:55,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:31:55" (1/1) ... [2019-09-08 02:31:55,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb25d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:55, skipping insertion in model container [2019-09-08 02:31:55,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:31:55" (1/1) ... [2019-09-08 02:31:55,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:31:55,924 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:31:56,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:31:56,169 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:31:56,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:31:56,365 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:31:56,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56 WrapperNode [2019-09-08 02:31:56,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:31:56,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:31:56,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:31:56,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:31:56,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (1/1) ... [2019-09-08 02:31:56,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:31:56,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:31:56,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:31:56,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:31:56,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (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 [2019-09-08 02:31:56,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:31:56,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:31:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 02:31:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:31:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:31:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 02:31:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 02:31:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-08 02:31:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:31:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 02:31:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 02:31:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 02:31:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 02:31:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:31:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:31:56,806 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:31:56,807 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 02:31:56,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:31:56 BoogieIcfgContainer [2019-09-08 02:31:56,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:31:56,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:31:56,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:31:56,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:31:56,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:31:55" (1/3) ... [2019-09-08 02:31:56,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b9346e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:31:56, skipping insertion in model container [2019-09-08 02:31:56,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:31:56" (2/3) ... [2019-09-08 02:31:56,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b9346e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:31:56, skipping insertion in model container [2019-09-08 02:31:56,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:31:56" (3/3) ... [2019-09-08 02:31:56,823 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-09-08 02:31:56,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:31:56,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:31:56,855 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:31:56,879 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:31:56,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:31:56,880 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:31:56,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:31:56,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:31:56,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:31:56,880 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:31:56,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:31:56,881 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:31:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-08 02:31:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 02:31:56,900 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:31:56,901 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:31:56,903 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:31:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:31:56,908 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-09-08 02:31:56,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:31:56,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:31:56,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:56,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:31:56,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:31:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:31:57,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:31:57,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 02:31:57,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 02:31:57,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 02:31:57,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:31:57,065 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-08 02:31:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:31:57,085 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2019-09-08 02:31:57,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 02:31:57,087 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-08 02:31:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:31:57,095 INFO L225 Difference]: With dead ends: 52 [2019-09-08 02:31:57,095 INFO L226 Difference]: Without dead ends: 25 [2019-09-08 02:31:57,099 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 [2019-09-08 02:31:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-08 02:31:57,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-08 02:31:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-08 02:31:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-08 02:31:57,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-08 02:31:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:31:57,137 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-08 02:31:57,137 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 02:31:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-08 02:31:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 02:31:57,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:31:57,139 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:31:57,139 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:31:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:31:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-09-08 02:31:57,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:31:57,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:31:57,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:57,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:31:57,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:31:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:31:57,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:31:57,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 02:31:57,288 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 02:31:57,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 02:31:57,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 02:31:57,289 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-09-08 02:31:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:31:57,441 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2019-09-08 02:31:57,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 02:31:57,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-08 02:31:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:31:57,445 INFO L225 Difference]: With dead ends: 57 [2019-09-08 02:31:57,445 INFO L226 Difference]: Without dead ends: 35 [2019-09-08 02:31:57,447 INFO L628 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 [2019-09-08 02:31:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-08 02:31:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-09-08 02:31:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-08 02:31:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-09-08 02:31:57,458 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2019-09-08 02:31:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:31:57,459 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-09-08 02:31:57,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 02:31:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-09-08 02:31:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 02:31:57,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:31:57,460 INFO L399 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] [2019-09-08 02:31:57,461 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:31:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:31:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-09-08 02:31:57,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:31:57,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:31:57,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:57,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:31:57,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 02:31:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 02:31:57,760 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 02:31:57,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 02:31:57 BoogieIcfgContainer [2019-09-08 02:31:57,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 02:31:57,822 INFO L168 Benchmark]: Toolchain (without parser) took 1930.76 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 89.2 MB in the beginning and 110.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,823 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.37 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 88.9 MB in the beginning and 180.4 MB in the end (delta: -91.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,825 INFO L168 Benchmark]: Boogie Preprocessor took 36.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 178.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,826 INFO L168 Benchmark]: RCFGBuilder took 401.90 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 161.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,827 INFO L168 Benchmark]: TraceAbstraction took 1003.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.4 MB in the beginning and 110.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:57,831 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 475.37 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 88.9 MB in the beginning and 180.4 MB in the end (delta: -91.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 178.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.90 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 161.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1003.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.4 MB in the beginning and 110.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 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] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={1:0}, B={-2:0}, C={-1:0}, i=0, M=1] [L18] COND TRUE i