./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/trex01_false-unreach-call_true-termination.i --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/loops/trex01_false-unreach-call_true-termination.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 b3a658a1fe592322f5aa7f1391ad7ef7d0545b11 .................................................................................................................................................................................................................................................................................. 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 18:17:20,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:17:20,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:17:20,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:17:20,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:17:20,349 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:17:20,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:17:20,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:17:20,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:17:20,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:17:20,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:17:20,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:17:20,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:17:20,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:17:20,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:17:20,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:17:20,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:17:20,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:17:20,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:17:20,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:17:20,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:17:20,371 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:17:20,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:17:20,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:17:20,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:17:20,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:17:20,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:17:20,377 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:17:20,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:17:20,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:17:20,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:17:20,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:17:20,381 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:17:20,381 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:17:20,382 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:17:20,383 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:17:20,384 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:17:20,407 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:17:20,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:17:20,411 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:17:20,411 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:17:20,412 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:17:20,412 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:17:20,412 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:17:20,416 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:17:20,416 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:17:20,416 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:17:20,416 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:17:20,416 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:17:20,416 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:17:20,417 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:17:20,420 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:17:20,420 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:17:20,421 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:17:20,421 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:17:20,421 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:17:20,421 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:17:20,421 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:17:20,421 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:17:20,422 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:17:20,422 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:17:20,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:17:20,422 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 -> b3a658a1fe592322f5aa7f1391ad7ef7d0545b11 [2018-11-28 18:17:20,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:17:20,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:17:20,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:17:20,493 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:17:20,493 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:17:20,494 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/trex01_false-unreach-call_true-termination.i [2018-11-28 18:17:20,554 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ddb4294/0320fa2c81f94508a13c5efcf623b530/FLAG06281b4d6 [2018-11-28 18:17:20,967 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:17:20,968 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/trex01_false-unreach-call_true-termination.i [2018-11-28 18:17:20,973 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ddb4294/0320fa2c81f94508a13c5efcf623b530/FLAG06281b4d6 [2018-11-28 18:17:21,356 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ddb4294/0320fa2c81f94508a13c5efcf623b530 [2018-11-28 18:17:21,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:17:21,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:17:21,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:21,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:17:21,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:17:21,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f203e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21, skipping insertion in model container [2018-11-28 18:17:21,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:17:21,410 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:17:21,660 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:21,667 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:17:21,697 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:21,716 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:17:21,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21 WrapperNode [2018-11-28 18:17:21,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:21,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:21,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:17:21,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:17:21,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:21,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:17:21,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:17:21,747 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:17:21,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (1/1) ... [2018-11-28 18:17:21,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:17:21,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:17:21,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:17:21,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:17:21,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (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 18:17:21,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:17:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:17:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-28 18:17:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-28 18:17:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:17:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:17:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:17:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:17:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:17:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:17:22,397 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:17:22,398 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:17:22,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:22 BoogieIcfgContainer [2018-11-28 18:17:22,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:17:22,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:17:22,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:17:22,403 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:17:22,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:17:21" (1/3) ... [2018-11-28 18:17:22,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30a7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:22, skipping insertion in model container [2018-11-28 18:17:22,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:21" (2/3) ... [2018-11-28 18:17:22,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30a7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:22, skipping insertion in model container [2018-11-28 18:17:22,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:22" (3/3) ... [2018-11-28 18:17:22,407 INFO L112 eAbstractionObserver]: Analyzing ICFG trex01_false-unreach-call_true-termination.i [2018-11-28 18:17:22,418 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:17:22,433 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:17:22,452 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:17:22,492 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:17:22,493 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:17:22,494 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:17:22,494 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:17:22,494 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:17:22,495 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:17:22,495 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:17:22,495 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:17:22,495 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:17:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 18:17:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:17:22,521 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:22,522 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:22,525 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:22,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2018-11-28 18:17:22,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:22,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:22,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:22,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:22,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:22,662 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 18:17:22,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:22,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:17:22,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:17:22,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:17:22,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:22,690 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-11-28 18:17:22,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:22,715 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2018-11-28 18:17:22,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:17:22,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-28 18:17:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:22,728 INFO L225 Difference]: With dead ends: 45 [2018-11-28 18:17:22,728 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 18:17:22,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 18:17:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 18:17:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 18:17:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-28 18:17:22,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2018-11-28 18:17:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:22,770 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-28 18:17:22,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:17:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-28 18:17:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:17:22,771 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:22,771 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:22,771 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:22,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2018-11-28 18:17:22,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:22,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:22,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:22,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:22,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:17:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:17:22,839 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:17:22,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:17:22 BoogieIcfgContainer [2018-11-28 18:17:22,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:17:22,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:17:22,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:17:22,865 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:17:22,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:22" (3/4) ... [2018-11-28 18:17:22,868 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:17:22,916 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:17:22,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:17:22,917 INFO L168 Benchmark]: Toolchain (without parser) took 1556.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:22,919 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:22,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.20 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:22,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:22,921 INFO L168 Benchmark]: Boogie Preprocessor took 37.44 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:22,921 INFO L168 Benchmark]: RCFGBuilder took 613.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:22,922 INFO L168 Benchmark]: TraceAbstraction took 464.69 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:22,923 INFO L168 Benchmark]: Witness Printer took 52.08 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 18:17:22,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 353.20 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.44 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 613.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 464.69 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 52.08 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] _Bool c = __VERIFIER_nondet_bool(); [L32] COND FALSE !(\read(c)) VAL [c=0] [L35] CALL f(2) VAL [\old(d)=2] [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L12] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L15] COND FALSE !(z < k) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L16] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...