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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:27:18,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:27:18,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:27:18,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:27:18,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:27:18,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:27:18,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:27:18,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:27:18,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:27:18,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:27:18,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:27:18,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:27:18,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:27:18,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:27:18,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:27:18,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:27:18,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:27:18,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:27:18,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:27:18,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:27:18,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:27:18,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:27:18,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:27:18,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:27:18,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:27:18,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:27:18,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:27:18,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:27:18,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:27:18,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:27:18,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:27:18,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:27:18,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:27:18,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:27:18,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:27:18,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:27:18,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:27:18,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:27:18,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:27:18,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:27:18,936 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:27:18,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:27:18,937 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:27:18,937 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:27:18,938 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:27:18,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:27:18,938 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:27:18,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:27:18,939 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:27:18,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:27:18,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:27:18,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:27:18,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:27:18,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:27:18,940 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:27:18,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:27:18,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:27:18,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:27:18,941 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:27:18,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:27:18,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:27:18,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:27:18,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:27:18,942 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:27:18,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:27:18,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:27:18,942 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:27:18,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:27:18,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:27:18,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:27:18,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:27:18,986 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:27:18,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2019-09-09 05:27:19,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96960854b/a63fd23eeeb04283b7a05cf57a1ba91a/FLAG3d1b90b6d [2019-09-09 05:27:19,429 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:27:19,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2019-09-09 05:27:19,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96960854b/a63fd23eeeb04283b7a05cf57a1ba91a/FLAG3d1b90b6d [2019-09-09 05:27:19,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96960854b/a63fd23eeeb04283b7a05cf57a1ba91a [2019-09-09 05:27:19,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:27:19,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:27:19,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:27:19,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:27:19,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:27:19,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779b0c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19, skipping insertion in model container [2019-09-09 05:27:19,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,482 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:27:19,500 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:27:19,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:27:19,722 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:27:19,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:27:19,762 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:27:19,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19 WrapperNode [2019-09-09 05:27:19,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:27:19,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:27:19,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:27:19,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:27:19,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (1/1) ... [2019-09-09 05:27:19,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:27:19,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:27:19,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:27:19,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:27:19,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (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 [2019-09-09 05:27:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:27:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:27:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:27:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:27:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:27:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:27:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:27:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:27:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:27:20,149 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:27:20,150 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-09 05:27:20,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:20 BoogieIcfgContainer [2019-09-09 05:27:20,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:27:20,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:27:20,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:27:20,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:27:20,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:27:19" (1/3) ... [2019-09-09 05:27:20,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f0a9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:20, skipping insertion in model container [2019-09-09 05:27:20,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:19" (2/3) ... [2019-09-09 05:27:20,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f0a9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:20, skipping insertion in model container [2019-09-09 05:27:20,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:20" (3/3) ... [2019-09-09 05:27:20,158 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.i [2019-09-09 05:27:20,168 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:27:20,175 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:27:20,205 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:27:20,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:27:20,249 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:27:20,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:27:20,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:27:20,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:27:20,250 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:27:20,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:27:20,250 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:27:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-09 05:27:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:27:20,280 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:20,281 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:20,282 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:20,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1998025284, now seen corresponding path program 1 times [2019-09-09 05:27:20,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:20,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:20,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,338 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:20,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:20,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:27:20,418 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:20,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:27:20,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:27:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:20,434 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-09 05:27:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:20,447 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-09 05:27:20,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:27:20,449 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-09 05:27:20,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:20,458 INFO L225 Difference]: With dead ends: 28 [2019-09-09 05:27:20,458 INFO L226 Difference]: Without dead ends: 23 [2019-09-09 05:27:20,461 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 [2019-09-09 05:27:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-09 05:27:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-09 05:27:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-09 05:27:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-09 05:27:20,494 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-09-09 05:27:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:20,494 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-09 05:27:20,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:27:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-09 05:27:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:27:20,496 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:20,496 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:20,496 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash -915838997, now seen corresponding path program 1 times [2019-09-09 05:27:20,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,499 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:20,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:20,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:27:20,552 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:20,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:27:20,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:27:20,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:27:20,554 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-09-09 05:27:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:20,592 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-09-09 05:27:20,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:27:20,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-09-09 05:27:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:20,594 INFO L225 Difference]: With dead ends: 25 [2019-09-09 05:27:20,594 INFO L226 Difference]: Without dead ends: 25 [2019-09-09 05:27:20,595 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 [2019-09-09 05:27:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-09 05:27:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-09-09 05:27:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-09 05:27:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-09-09 05:27:20,600 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2019-09-09 05:27:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:20,600 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-09-09 05:27:20,600 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:27:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-09-09 05:27:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-09 05:27:20,601 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:20,601 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:20,601 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:20,601 INFO L82 PathProgramCache]: Analyzing trace with hash 203688137, now seen corresponding path program 1 times [2019-09-09 05:27:20,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,603 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-09 05:27:20,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:20,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:27:20,654 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:20,657 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:27:20,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:27:20,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:27:20,658 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2019-09-09 05:27:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:20,687 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-09-09 05:27:20,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:27:20,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-09 05:27:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:20,689 INFO L225 Difference]: With dead ends: 27 [2019-09-09 05:27:20,689 INFO L226 Difference]: Without dead ends: 27 [2019-09-09 05:27:20,689 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 [2019-09-09 05:27:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-09 05:27:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-09-09 05:27:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-09 05:27:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-09 05:27:20,694 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-09 05:27:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:20,695 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-09 05:27:20,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:27:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-09 05:27:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-09 05:27:20,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:20,696 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] [2019-09-09 05:27:20,696 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -990062782, now seen corresponding path program 1 times [2019-09-09 05:27:20,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:20,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:20,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:20,699 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-09 05:27:20,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:27:20,778 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:27:20,779 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-09-09 05:27:20,781 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [32], [34], [38], [46], [56], [59], [61], [67], [68], [69], [71] [2019-09-09 05:27:20,818 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:27:20,818 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:27:20,877 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:27:20,879 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 23 variables. [2019-09-09 05:27:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:20,882 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:27:20,917 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:27:20,919 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:27:20,921 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-09-09 05:27:20,921 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:27:20,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:27:20,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:27:20,922 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:20,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:27:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:27:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:20,924 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-09-09 05:27:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:20,925 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:27:20,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:27:20,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-09 05:27:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:20,926 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:27:20,926 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:27:20,926 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:27:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:27:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:27:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:27:20,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-09 05:27:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:20,927 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:27:20,928 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:27:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:27:20,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:27:20,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:27:20 BoogieIcfgContainer [2019-09-09 05:27:20,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:27:20,935 INFO L168 Benchmark]: Toolchain (without parser) took 1467.95 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 87.5 MB in the beginning and 114.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,936 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.89 ms. Allocated memory is still 131.1 MB. Free memory was 87.2 MB in the beginning and 77.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,938 INFO L168 Benchmark]: Boogie Preprocessor took 121.38 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 77.0 MB in the beginning and 174.3 MB in the end (delta: -97.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,939 INFO L168 Benchmark]: RCFGBuilder took 266.85 ms. Allocated memory is still 198.7 MB. Free memory was 174.3 MB in the beginning and 159.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,940 INFO L168 Benchmark]: TraceAbstraction took 780.75 ms. Allocated memory is still 198.7 MB. Free memory was 159.1 MB in the beginning and 114.5 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:20,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.89 ms. Allocated memory is still 131.1 MB. Free memory was 87.2 MB in the beginning and 77.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.38 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 77.0 MB in the beginning and 174.3 MB in the end (delta: -97.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.85 ms. Allocated memory is still 198.7 MB. Free memory was 174.3 MB in the beginning and 159.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 780.75 ms. Allocated memory is still 198.7 MB. Free memory was 159.1 MB in the beginning and 114.5 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 34 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9605263157894737 AbsIntWeakeningRatio, 0.7894736842105263 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...