./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/list-simple/dll2n_update_all_reverse.i -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 cfdde8b1798318c3bb26b76a748741913b280952 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:01:07,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:01:07,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:01:07,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:01:07,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:01:07,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:01:07,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:01:07,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:01:07,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:01:07,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:01:07,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:01:07,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:01:07,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:01:07,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:01:07,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:01:07,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:01:07,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:01:07,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:01:07,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:01:07,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:01:07,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:01:07,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:01:07,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:01:07,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:01:07,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:01:07,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:01:07,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:01:07,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:01:07,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:01:07,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:01:07,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:01:07,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:01:07,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:01:07,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:01:07,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:01:07,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:01:07,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:01:07,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:01:07,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:01:07,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:01:07,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:01:07,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:01:07,445 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:01:07,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:01:07,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:01:07,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:01:07,450 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:01:07,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:01:07,451 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:01:07,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:01:07,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:01:07,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:01:07,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:01:07,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:01:07,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:01:07,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:01:07,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:01:07,453 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:01:07,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:01:07,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:01:07,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:01:07,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:01:07,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:01:07,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:01:07,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:01:07,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:01:07,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:01:07,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:01:07,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:01:07,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:01:07,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:01:07,459 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 -> cfdde8b1798318c3bb26b76a748741913b280952 [2019-11-28 17:01:07,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:01:07,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:01:07,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:01:07,853 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:01:07,855 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:01:07,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-28 17:01:07,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdc3ffb/6157bb6479e441b59f681cba041b3aea/FLAG3fe8163d7 [2019-11-28 17:01:08,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:01:08,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-28 17:01:08,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdc3ffb/6157bb6479e441b59f681cba041b3aea/FLAG3fe8163d7 [2019-11-28 17:01:08,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bdc3ffb/6157bb6479e441b59f681cba041b3aea [2019-11-28 17:01:08,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:01:08,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:01:08,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:01:08,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:01:08,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:01:08,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:01:08" (1/1) ... [2019-11-28 17:01:08,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6798cdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:08, skipping insertion in model container [2019-11-28 17:01:08,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:01:08" (1/1) ... [2019-11-28 17:01:08,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:01:08,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:01:09,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:01:09,320 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:01:09,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:01:09,434 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:01:09,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09 WrapperNode [2019-11-28 17:01:09,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:01:09,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:01:09,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:01:09,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:01:09,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:01:09,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:01:09,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:01:09,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:01:09,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (1/1) ... [2019-11-28 17:01:09,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:01:09,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:01:09,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:01:09,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:01:09,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (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 [2019-11-28 17:01:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:01:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:01:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 17:01:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 17:01:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 17:01:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:01:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:01:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:01:09,994 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:01:09,994 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-28 17:01:09,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:01:09 BoogieIcfgContainer [2019-11-28 17:01:09,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:01:09,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:01:09,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:01:10,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:01:10,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:01:08" (1/3) ... [2019-11-28 17:01:10,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:01:10, skipping insertion in model container [2019-11-28 17:01:10,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:09" (2/3) ... [2019-11-28 17:01:10,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:01:10, skipping insertion in model container [2019-11-28 17:01:10,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:01:09" (3/3) ... [2019-11-28 17:01:10,006 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2019-11-28 17:01:10,018 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:01:10,024 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:01:10,034 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:01:10,059 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:01:10,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:01:10,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:01:10,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:01:10,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:01:10,060 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:01:10,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:01:10,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:01:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-28 17:01:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 17:01:10,084 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:01:10,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:01:10,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:01:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:01:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1608020802, now seen corresponding path program 1 times [2019-11-28 17:01:10,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:01:10,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698182599] [2019-11-28 17:01:10,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:01:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:01:10,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698182599] [2019-11-28 17:01:10,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:01:10,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:01:10,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663184788] [2019-11-28 17:01:10,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:01:10,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:01:10,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:01:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:01:10,295 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-11-28 17:01:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:01:10,366 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-11-28 17:01:10,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:01:10,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-28 17:01:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:01:10,380 INFO L225 Difference]: With dead ends: 56 [2019-11-28 17:01:10,381 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 17:01:10,388 INFO L630 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 [2019-11-28 17:01:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 17:01:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-28 17:01:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 17:01:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-11-28 17:01:10,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2019-11-28 17:01:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:01:10,433 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-28 17:01:10,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:01:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-11-28 17:01:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 17:01:10,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:01:10,434 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:01:10,435 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:01:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:01:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash -780239213, now seen corresponding path program 1 times [2019-11-28 17:01:10,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:01:10,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869515802] [2019-11-28 17:01:10,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:01:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:01:10,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869515802] [2019-11-28 17:01:10,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:01:10,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:01:10,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079993105] [2019-11-28 17:01:10,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:01:10,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:01:10,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:01:10,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:01:10,527 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 3 states. [2019-11-28 17:01:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:01:10,562 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-11-28 17:01:10,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:01:10,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-28 17:01:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:01:10,564 INFO L225 Difference]: With dead ends: 47 [2019-11-28 17:01:10,564 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 17:01:10,565 INFO L630 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 [2019-11-28 17:01:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 17:01:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-28 17:01:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 17:01:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-11-28 17:01:10,572 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2019-11-28 17:01:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:01:10,572 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-11-28 17:01:10,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:01:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-11-28 17:01:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 17:01:10,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:01:10,574 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:01:10,574 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:01:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:01:10,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1367045227, now seen corresponding path program 1 times [2019-11-28 17:01:10,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:01:10,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22848938] [2019-11-28 17:01:10,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:01:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:01:10,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22848938] [2019-11-28 17:01:10,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442722343] [2019-11-28 17:01:10,642 INFO L94 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 [2019-11-28 17:01:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:10,725 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 17:01:10,731 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:01:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:01:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:01:10,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 17:01:10,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764022127] [2019-11-28 17:01:10,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:01:10,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:01:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:01:10,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:01:10,779 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2019-11-28 17:01:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:01:10,816 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-28 17:01:10,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:01:10,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-28 17:01:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:01:10,819 INFO L225 Difference]: With dead ends: 43 [2019-11-28 17:01:10,820 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 17:01:10,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:01:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 17:01:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 17:01:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 17:01:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-28 17:01:10,831 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-28 17:01:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:01:10,832 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-28 17:01:10,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:01:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-28 17:01:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 17:01:10,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:01:10,834 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:01:11,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:01:11,038 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:01:11,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:01:11,038 INFO L82 PathProgramCache]: Analyzing trace with hash 980561436, now seen corresponding path program 1 times [2019-11-28 17:01:11,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:01:11,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646282680] [2019-11-28 17:01:11,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:01:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:01:11,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646282680] [2019-11-28 17:01:11,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674150026] [2019-11-28 17:01:11,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:01:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:01:11,301 INFO L264 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 17:01:11,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:01:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 17:01:11,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:01:11,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2019-11-28 17:01:11,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40888214] [2019-11-28 17:01:11,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:01:11,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:01:11,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:01:11,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:01:11,320 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-11-28 17:01:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:01:11,376 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-28 17:01:11,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:01:11,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-11-28 17:01:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:01:11,378 INFO L225 Difference]: With dead ends: 34 [2019-11-28 17:01:11,378 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:01:11,379 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:01:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:01:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:01:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:01:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:01:11,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-28 17:01:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:01:11,380 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:01:11,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:01:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:01:11,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:01:11,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:01:11,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:01:11,632 INFO L246 CegarLoopResult]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2019-11-28 17:01:11,633 INFO L242 CegarLoopResult]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 ULTIMATE.start_main_~len~0) (<= 1 ULTIMATE.start_main_~i~0)) [2019-11-28 17:01:11,633 INFO L246 CegarLoopResult]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2019-11-28 17:01:11,633 INFO L246 CegarLoopResult]: For program point L606(lines 1 632) no Hoare annotation was computed. [2019-11-28 17:01:11,633 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:01:11,633 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:01:11,634 INFO L249 CegarLoopResult]: At program point L631(lines 613 632) the Hoare annotation is: true [2019-11-28 17:01:11,634 INFO L242 CegarLoopResult]: At program point L590(lines 574 591) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-28 17:01:11,634 INFO L242 CegarLoopResult]: At program point L607-2(lines 607 610) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-28 17:01:11,635 INFO L246 CegarLoopResult]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2019-11-28 17:01:11,635 INFO L246 CegarLoopResult]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-11-28 17:01:11,635 INFO L242 CegarLoopResult]: At program point L600-2(lines 600 603) the Hoare annotation is: false [2019-11-28 17:01:11,635 INFO L246 CegarLoopResult]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2019-11-28 17:01:11,635 INFO L242 CegarLoopResult]: At program point L625(lines 613 632) the Hoare annotation is: false [2019-11-28 17:01:11,636 INFO L246 CegarLoopResult]: For program point L592(lines 592 598) no Hoare annotation was computed. [2019-11-28 17:01:11,636 INFO L246 CegarLoopResult]: For program point L584(lines 584 586) no Hoare annotation was computed. [2019-11-28 17:01:11,636 INFO L246 CegarLoopResult]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2019-11-28 17:01:11,636 INFO L242 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-28 17:01:11,636 INFO L246 CegarLoopResult]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2019-11-28 17:01:11,636 INFO L249 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2019-11-28 17:01:11,637 INFO L242 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-28 17:01:11,637 INFO L246 CegarLoopResult]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2019-11-28 17:01:11,638 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 17:01:11,638 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2019-11-28 17:01:11,638 INFO L246 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-11-28 17:01:11,638 INFO L246 CegarLoopResult]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2019-11-28 17:01:11,639 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:01:11,639 INFO L249 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2019-11-28 17:01:11,639 INFO L242 CegarLoopResult]: At program point L604(lines 599 605) the Hoare annotation is: false [2019-11-28 17:01:11,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:01:11 BoogieIcfgContainer [2019-11-28 17:01:11,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:01:11,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:01:11,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:01:11,660 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:01:11,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:01:09" (3/4) ... [2019-11-28 17:01:11,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:01:11,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 17:01:11,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 17:01:11,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:01:11,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:01:11,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:01:11,747 INFO L168 Benchmark]: Toolchain (without parser) took 2942.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 956.3 MB in the beginning and 926.3 MB in the end (delta: 30.1 MB). Peak memory consumption was 102.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:01:11,748 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:01:11,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -97.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:01:11,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.00 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:01:11,750 INFO L168 Benchmark]: Boogie Preprocessor took 36.41 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. [2019-11-28 17:01:11,750 INFO L168 Benchmark]: RCFGBuilder took 458.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:01:11,751 INFO L168 Benchmark]: TraceAbstraction took 1662.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 926.3 MB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:01:11,752 INFO L168 Benchmark]: Witness Printer took 84.27 ms. Allocated memory is still 1.1 GB. Free memory is still 926.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:01:11,755 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 630.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -97.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.00 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.41 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. * RCFGBuilder took 458.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1662.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 926.3 MB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. * Witness Printer took 84.27 ms. Allocated memory is still 1.1 GB. Free memory is still 926.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: 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 - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 2 <= len && 1 <= i - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 33 SDslu, 108 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 23 NumberOfFragments, 25 HoareAnnotationTreeSize, 11 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4491 SizeOfPredicates, 5 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...