/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:26:18,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:26:18,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:26:18,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:26:18,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:26:18,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:26:18,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:26:18,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:26:18,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:26:18,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:26:18,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:26:18,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:26:18,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:26:18,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:26:18,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:26:18,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:26:18,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:26:18,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:26:18,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:26:18,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:26:18,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:26:18,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:26:18,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:26:18,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:26:18,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:26:18,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:26:18,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:26:18,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:26:18,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:26:18,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:26:18,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:26:18,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:26:18,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:26:18,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:26:18,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:26:18,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:26:18,501 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:26:18,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:26:18,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:26:18,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:26:18,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:26:18,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:26:18,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:26:18,503 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:26:18,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:26:18,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:26:18,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:26:18,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:26:18,988 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:26:18,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c [2020-10-23 20:26:19,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568c7a15/b1899355bbdc4978b4ad2b30093d136b/FLAGfb810b1bb [2020-10-23 20:26:19,728 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:26:19,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c [2020-10-23 20:26:19,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568c7a15/b1899355bbdc4978b4ad2b30093d136b/FLAGfb810b1bb [2020-10-23 20:26:20,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568c7a15/b1899355bbdc4978b4ad2b30093d136b [2020-10-23 20:26:20,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:26:20,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:26:20,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:20,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:26:20,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:26:20,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a4c9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20, skipping insertion in model container [2020-10-23 20:26:20,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:26:20,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:26:20,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:20,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:26:20,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:20,320 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:26:20,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20 WrapperNode [2020-10-23 20:26:20,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:20,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:26:20,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:26:20,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:26:20,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (1/1) ... [2020-10-23 20:26:20,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:26:20,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:26:20,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:26:20,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:26:20,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (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 [2020-10-23 20:26:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:26:20,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:26:20,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:26:20,482 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-23 20:26:20,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:26:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:26:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:26:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:26:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:26:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-23 20:26:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:26:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:26:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:26:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:26:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:26:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:26:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:26:20,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:26:20,718 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:26:20,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:20 BoogieIcfgContainer [2020-10-23 20:26:20,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:26:20,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:26:20,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:26:20,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:26:20,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:26:20" (1/3) ... [2020-10-23 20:26:20,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae0ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:20, skipping insertion in model container [2020-10-23 20:26:20,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:20" (2/3) ... [2020-10-23 20:26:20,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae0ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:20, skipping insertion in model container [2020-10-23 20:26:20,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:20" (3/3) ... [2020-10-23 20:26:20,731 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2020-10-23 20:26:20,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:26:20,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:26:20,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:26:20,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:26:20,812 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:26:20,812 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:26:20,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:26:20,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:26:20,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:26:20,813 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:26:20,813 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:26:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-23 20:26:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 20:26:20,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:20,864 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:20,868 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -553296711, now seen corresponding path program 1 times [2020-10-23 20:26:20,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:20,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316244032] [2020-10-23 20:26:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:21,044 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:21,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316244032] [2020-10-23 20:26:21,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:21,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:26:21,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376064364] [2020-10-23 20:26:21,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:26:21,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:21,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:26:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:26:21,480 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-10-23 20:26:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:21,718 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-23 20:26:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:26:21,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-23 20:26:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:21,727 INFO L225 Difference]: With dead ends: 39 [2020-10-23 20:26:21,727 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:26:21,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:26:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:26:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:26:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:26:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:26:21,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-23 20:26:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:21,761 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:26:21,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:26:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:26:21,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:26:21,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:26:21,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:26:22,045 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,046 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,046 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,046 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,046 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,047 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,047 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,047 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,047 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,047 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,048 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 20:26:22,048 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,048 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,048 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,048 INFO L270 CegarLoopResult]: At program point fFINAL(lines 5 10) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-23 20:26:22,049 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,049 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,049 INFO L270 CegarLoopResult]: At program point fEXIT(lines 5 10) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-23 20:26:22,049 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,049 INFO L270 CegarLoopResult]: At program point L8-1(lines 5 10) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,050 INFO L270 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (or (not (= |f_#in~n| 2)) (= 2 f_~n)) [2020-10-23 20:26:22,050 INFO L270 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,050 INFO L277 CegarLoopResult]: At program point fENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 20:26:22,050 INFO L270 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: (not (= |f_#in~n| 2)) [2020-10-23 20:26:22,051 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,051 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,051 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,051 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,051 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 14) the Hoare annotation is: true [2020-10-23 20:26:22,052 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 12 14) the Hoare annotation is: true [2020-10-23 20:26:22,052 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 12 14) the Hoare annotation is: true [2020-10-23 20:26:22,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:26:22 BoogieIcfgContainer [2020-10-23 20:26:22,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:26:22,073 INFO L168 Benchmark]: Toolchain (without parser) took 1984.69 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 148.5 MB in the beginning and 147.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,074 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 137.9 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:26:22,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.21 ms. Allocated memory is still 164.6 MB. Free memory was 147.8 MB in the beginning and 139.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,076 INFO L168 Benchmark]: Boogie Preprocessor took 32.99 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 137.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,077 INFO L168 Benchmark]: RCFGBuilder took 363.83 ms. Allocated memory is still 164.6 MB. Free memory was 137.8 MB in the beginning and 137.2 MB in the end (delta: 563.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,079 INFO L168 Benchmark]: TraceAbstraction took 1347.98 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 136.7 MB in the beginning and 147.2 MB in the end (delta: -10.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 137.9 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.21 ms. Allocated memory is still 164.6 MB. Free memory was 147.8 MB in the beginning and 139.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.99 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 137.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 363.83 ms. Allocated memory is still 164.6 MB. Free memory was 137.8 MB in the beginning and 137.2 MB in the end (delta: 563.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1347.98 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 136.7 MB in the beginning and 147.2 MB in the end (delta: -10.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for f Derived contract for procedure f: !(\old(n) == 2) || 2 == n - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 9 SDslu, 33 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 41 PreInvPairs, 47 NumberOfFragments, 100 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 31 FomulaSimplificationsInter, 230 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...