./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.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 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 ................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:07:58,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:07:58,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:07:58,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:07:58,501 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:07:58,503 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:07:58,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:07:58,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:07:58,509 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:07:58,510 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:07:58,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:07:58,511 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:07:58,513 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:07:58,514 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:07:58,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:07:58,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:07:58,517 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:07:58,520 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:07:58,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:07:58,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:07:58,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:07:58,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:07:58,530 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:07:58,531 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:07:58,531 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:07:58,532 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:07:58,534 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:07:58,535 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:07:58,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:07:58,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:07:58,537 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:07:58,538 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:07:58,539 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:07:58,540 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:07:58,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:07:58,542 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:07:58,543 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:07:58,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:07:58,560 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:07:58,561 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:07:58,561 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:07:58,562 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:07:58,563 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:07:58,563 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:07:58,563 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:07:58,563 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:07:58,563 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:07:58,564 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:07:58,564 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:07:58,565 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:07:58,567 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:07:58,567 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:07:58,567 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:07:58,567 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:07:58,567 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:07:58,567 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:07:58,568 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:07:58,568 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:07:58,568 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:07:58,568 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:07:58,568 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:07:58,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:07:58,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 [2018-11-28 18:07:58,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:07:58,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:07:58,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:07:58,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:07:58,627 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:07:58,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-11-28 18:07:58,701 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bcd08b2/ccf775fd43b7448bb54947b8178dcf2c/FLAG93f7b9c22 [2018-11-28 18:07:59,213 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:07:59,213 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-11-28 18:07:59,219 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bcd08b2/ccf775fd43b7448bb54947b8178dcf2c/FLAG93f7b9c22 [2018-11-28 18:07:59,560 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bcd08b2/ccf775fd43b7448bb54947b8178dcf2c [2018-11-28 18:07:59,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:07:59,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:07:59,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:07:59,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:07:59,571 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:07:59,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6c4ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59, skipping insertion in model container [2018-11-28 18:07:59,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:07:59,605 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:07:59,859 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:07:59,872 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:07:59,894 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:07:59,911 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:07:59,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59 WrapperNode [2018-11-28 18:07:59,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:07:59,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:07:59,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:07:59,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:07:59,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:07:59,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:07:59,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:07:59,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:07:59,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (1/1) ... [2018-11-28 18:07:59,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:07:59,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:07:59,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:07:59,975 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:07:59,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (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 [2018-11-28 18:08:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:08:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:08:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:08:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:08:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:08:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:08:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:08:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:08:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:08:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:08:00,419 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:08:00,419 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:08:00,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:00 BoogieIcfgContainer [2018-11-28 18:08:00,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:08:00,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:08:00,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:08:00,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:08:00,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:07:59" (1/3) ... [2018-11-28 18:08:00,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b6c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:00, skipping insertion in model container [2018-11-28 18:08:00,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:59" (2/3) ... [2018-11-28 18:08:00,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b6c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:00, skipping insertion in model container [2018-11-28 18:08:00,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:00" (3/3) ... [2018-11-28 18:08:00,430 INFO L112 eAbstractionObserver]: Analyzing ICFG test29_false-unreach-call_true-termination.c [2018-11-28 18:08:00,442 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:08:00,450 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:08:00,471 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:08:00,506 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:08:00,507 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:08:00,507 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:08:00,507 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:08:00,508 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:08:00,508 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:08:00,508 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:08:00,508 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:08:00,508 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:08:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-28 18:08:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:08:00,534 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:00,535 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:00,537 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:00,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2018-11-28 18:08:00,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:00,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:00,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:00,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:00,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:08:00,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:00,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:08:00,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:08:00,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:08:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:08:00,925 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-11-28 18:08:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:01,093 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-11-28 18:08:01,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:08:01,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-28 18:08:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:01,105 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:08:01,105 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 18:08:01,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:08:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 18:08:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-11-28 18:08:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 18:08:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-28 18:08:01,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-11-28 18:08:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:01,149 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-28 18:08:01,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:08:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-28 18:08:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:08:01,149 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:01,150 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:01,150 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:01,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2018-11-28 18:08:01,151 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:01,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:01,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:01,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:01,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:08:01,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:01,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:08:01,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:08:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:08:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:08:01,363 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-11-28 18:08:01,676 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 18:08:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:01,749 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-28 18:08:01,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:08:01,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-28 18:08:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:01,751 INFO L225 Difference]: With dead ends: 23 [2018-11-28 18:08:01,751 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 18:08:01,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:08:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 18:08:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 18:08:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 18:08:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-11-28 18:08:01,756 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2018-11-28 18:08:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:01,756 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-11-28 18:08:01,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:08:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-11-28 18:08:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:08:01,757 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:01,757 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:01,757 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:01,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2018-11-28 18:08:01,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:01,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:01,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:01,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:01,818 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:08:01,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:08:01 BoogieIcfgContainer [2018-11-28 18:08:01,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:08:01,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:08:01,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:08:01,853 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:08:01,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:00" (3/4) ... [2018-11-28 18:08:01,856 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:08:01,902 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:08:01,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:08:01,903 INFO L168 Benchmark]: Toolchain (without parser) took 2338.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -101.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:01,904 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:01,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:01,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.58 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:01,906 INFO L168 Benchmark]: Boogie Preprocessor took 31.39 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:01,907 INFO L168 Benchmark]: RCFGBuilder took 445.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:01,908 INFO L168 Benchmark]: TraceAbstraction took 1430.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:01,908 INFO L168 Benchmark]: Witness Printer took 49.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:01,913 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.58 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.39 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 445.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1430.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. * Witness Printer took 49.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 VAL [d1={7:0}, d2={6:0}, n=0, n ? &d1 : &d2={6:0}] [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 VAL [d1={7:0}, d1.a=1, d2={6:0}, n=0, pd={6:0}, pd == &d2 && d1.a != 0=1] [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 22 SDslu, 40 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...