./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/afterrec-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/afterrec-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30601811463d073f869bef96a3132d41c5e6f5ce ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:08:31,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:08:31,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:08:31,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:08:31,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:08:31,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:08:31,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:08:31,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:08:31,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:08:31,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:08:31,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:08:31,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:08:31,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:08:31,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:08:31,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:08:31,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:08:31,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:08:31,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:08:31,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:08:31,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:08:31,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:08:31,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:08:31,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:08:31,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:08:31,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:08:31,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:08:31,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:08:31,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:08:31,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:08:31,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:08:31,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:08:31,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:08:31,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:08:31,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:08:31,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:08:31,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:08:31,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:08:31,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:08:31,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:08:31,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:08:31,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:08:31,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 19:08:31,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:08:31,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:08:31,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:08:31,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:08:31,234 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:08:31,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:08:31,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:08:31,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 19:08:31,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:08:31,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:08:31,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:08:31,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:08:31,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:08:31,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:08:31,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:08:31,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:08:31,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:08:31,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:08:31,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:08:31,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:08:31,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:08:31,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:08:31,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:08:31,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:08:31,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:08:31,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 19:08:31,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 19:08:31,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:08:31,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:08:31,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30601811463d073f869bef96a3132d41c5e6f5ce [2020-07-28 19:08:31,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:08:31,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:08:31,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:08:31,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:08:31,656 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:08:31,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec-2.c [2020-07-28 19:08:31,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07da772a9/d37851a7f616421a8ecc01388bea5540/FLAGf09ad9e38 [2020-07-28 19:08:32,180 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:08:32,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec-2.c [2020-07-28 19:08:32,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07da772a9/d37851a7f616421a8ecc01388bea5540/FLAGf09ad9e38 [2020-07-28 19:08:32,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07da772a9/d37851a7f616421a8ecc01388bea5540 [2020-07-28 19:08:32,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:08:32,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:08:32,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:08:32,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:08:32,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:08:32,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9b5758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32, skipping insertion in model container [2020-07-28 19:08:32,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:08:32,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:08:32,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:08:32,804 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:08:32,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:08:32,848 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:08:32,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32 WrapperNode [2020-07-28 19:08:32,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:08:32,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:08:32,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:08:32,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:08:32,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:08:32,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:08:32,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:08:32,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:08:32,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (1/1) ... [2020-07-28 19:08:32,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:08:32,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:08:32,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:08:32,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:08:32,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (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 [2020-07-28 19:08:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-28 19:08:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-28 19:08:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:08:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:08:33,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:08:33,215 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:08:33,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:33 BoogieIcfgContainer [2020-07-28 19:08:33,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:08:33,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:08:33,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:08:33,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:08:33,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:08:32" (1/3) ... [2020-07-28 19:08:33,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8f6cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:08:33, skipping insertion in model container [2020-07-28 19:08:33,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:32" (2/3) ... [2020-07-28 19:08:33,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8f6cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:08:33, skipping insertion in model container [2020-07-28 19:08:33,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:33" (3/3) ... [2020-07-28 19:08:33,228 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2020-07-28 19:08:33,240 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:08:33,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 19:08:33,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 19:08:33,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:08:33,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:08:33,286 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:08:33,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:08:33,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:08:33,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:08:33,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:08:33,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:08:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-28 19:08:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 19:08:33,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:08:33,311 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:08:33,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:08:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:08:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1875137816, now seen corresponding path program 1 times [2020-07-28 19:08:33,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 19:08:33,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867369440] [2020-07-28 19:08:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 19:08:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-07-28 19:08:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:33,527 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} ~n := #in~n; {15#true} is VALID [2020-07-28 19:08:33,528 INFO L280 TraceCheckUtils]: 1: Hoare triple {15#true} assume ~n < 3; {15#true} is VALID [2020-07-28 19:08:33,529 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#true} assume true; {15#true} is VALID [2020-07-28 19:08:33,530 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {15#true} {16#false} #17#return; {16#false} is VALID [2020-07-28 19:08:33,533 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} havoc main_#res; {15#true} is VALID [2020-07-28 19:08:33,537 INFO L263 TraceCheckUtils]: 1: Hoare triple {15#true} call f(2); {17#(<= |f_#in~n| 2)} is VALID [2020-07-28 19:08:33,538 INFO L280 TraceCheckUtils]: 2: Hoare triple {17#(<= |f_#in~n| 2)} ~n := #in~n; {18#(<= f_~n 2)} is VALID [2020-07-28 19:08:33,540 INFO L280 TraceCheckUtils]: 3: Hoare triple {18#(<= f_~n 2)} assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; {16#false} is VALID [2020-07-28 19:08:33,540 INFO L263 TraceCheckUtils]: 4: Hoare triple {16#false} call f(~n); {15#true} is VALID [2020-07-28 19:08:33,541 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#true} ~n := #in~n; {15#true} is VALID [2020-07-28 19:08:33,541 INFO L280 TraceCheckUtils]: 6: Hoare triple {15#true} assume ~n < 3; {15#true} is VALID [2020-07-28 19:08:33,541 INFO L280 TraceCheckUtils]: 7: Hoare triple {15#true} assume true; {15#true} is VALID [2020-07-28 19:08:33,542 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {15#true} {16#false} #17#return; {16#false} is VALID [2020-07-28 19:08:33,542 INFO L280 TraceCheckUtils]: 9: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 19:08:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:08:33,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867369440] [2020-07-28 19:08:33,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950946526] [2020-07-28 19:08:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-28 19:08:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:33,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-28 19:08:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:33,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 19:08:33,800 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} havoc main_#res; {15#true} is VALID [2020-07-28 19:08:33,801 INFO L263 TraceCheckUtils]: 1: Hoare triple {15#true} call f(2); {17#(<= |f_#in~n| 2)} is VALID [2020-07-28 19:08:33,802 INFO L280 TraceCheckUtils]: 2: Hoare triple {17#(<= |f_#in~n| 2)} ~n := #in~n; {18#(<= f_~n 2)} is VALID [2020-07-28 19:08:33,804 INFO L280 TraceCheckUtils]: 3: Hoare triple {18#(<= f_~n 2)} assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; {16#false} is VALID [2020-07-28 19:08:33,804 INFO L263 TraceCheckUtils]: 4: Hoare triple {16#false} call f(~n); {16#false} is VALID [2020-07-28 19:08:33,804 INFO L280 TraceCheckUtils]: 5: Hoare triple {16#false} ~n := #in~n; {16#false} is VALID [2020-07-28 19:08:33,805 INFO L280 TraceCheckUtils]: 6: Hoare triple {16#false} assume ~n < 3; {16#false} is VALID [2020-07-28 19:08:33,805 INFO L280 TraceCheckUtils]: 7: Hoare triple {16#false} assume true; {16#false} is VALID [2020-07-28 19:08:33,805 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {16#false} {16#false} #17#return; {16#false} is VALID [2020-07-28 19:08:33,806 INFO L280 TraceCheckUtils]: 9: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 19:08:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:08:33,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-28 19:08:33,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2020-07-28 19:08:33,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907397538] [2020-07-28 19:08:33,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-28 19:08:33,819 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 19:08:33,823 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 19:08:33,843 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:08:33,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 19:08:33,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 19:08:33,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 19:08:33,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 19:08:33,856 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-07-28 19:08:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:33,935 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-28 19:08:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 19:08:33,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-28 19:08:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 19:08:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 19:08:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-28 19:08:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 19:08:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-28 19:08:33,951 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 20 transitions. [2020-07-28 19:08:33,999 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:08:34,006 INFO L225 Difference]: With dead ends: 19 [2020-07-28 19:08:34,006 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 19:08:34,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 19:08:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 19:08:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 19:08:34,035 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 19:08:34,036 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:34,037 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:34,037 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:34,037 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:08:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:34,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:34,038 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:08:34,038 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:34,038 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:34,039 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:08:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:34,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:34,039 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:08:34,040 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 19:08:34,040 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 19:08:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 19:08:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 19:08:34,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-28 19:08:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 19:08:34,042 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 19:08:34,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 19:08:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:34,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:34,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-28 19:08:34,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 19:08:34,284 INFO L268 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-07-28 19:08:34,284 INFO L268 CegarLoopResult]: For program point fEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-28 19:08:34,285 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2020-07-28 19:08:34,285 INFO L271 CegarLoopResult]: At program point fENTRY(lines 3 8) the Hoare annotation is: true [2020-07-28 19:08:34,285 INFO L268 CegarLoopResult]: For program point L6-1(lines 3 8) no Hoare annotation was computed. [2020-07-28 19:08:34,285 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-28 19:08:34,285 INFO L268 CegarLoopResult]: For program point fFINAL(lines 3 8) no Hoare annotation was computed. [2020-07-28 19:08:34,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 19:08:34,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 19:08:34,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 19:08:34,286 INFO L271 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-07-28 19:08:34,286 INFO L268 CegarLoopResult]: For program point L11-1(lines 10 12) no Hoare annotation was computed. [2020-07-28 19:08:34,290 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-28 19:08:34,291 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 19:08:34,292 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 19:08:34,292 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 19:08:34,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 07:08:34 BoogieIcfgContainer [2020-07-28 19:08:34,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 19:08:34,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 19:08:34,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 19:08:34,296 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 19:08:34,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:33" (3/4) ... [2020-07-28 19:08:34,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 19:08:34,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-07-28 19:08:34,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 19:08:34,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 19:08:34,345 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 19:08:34,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 19:08:34,348 INFO L168 Benchmark]: Toolchain (without parser) took 1823.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -73.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:34,349 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:08:34,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:34,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.62 ms. Allocated memory is still 1.0 GB. Free memory is still 945.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:08:34,351 INFO L168 Benchmark]: Boogie Preprocessor took 76.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:34,352 INFO L168 Benchmark]: RCFGBuilder took 248.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:34,353 INFO L168 Benchmark]: TraceAbstraction took 1074.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:34,353 INFO L168 Benchmark]: Witness Printer took 49.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:08:34,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.62 ms. Allocated memory is still 1.0 GB. Free memory is still 945.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 248.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1074.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 11.5 GB. * Witness Printer took 49.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 1 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, 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...