./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.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/ldv-regression/test_while_int_true-termination.c_false-unreach-call.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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b ........................................................................................................................................................................................................................................................................................................................................ 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 18:07:09,403 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:07:09,406 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:07:09,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:07:09,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:07:09,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:07:09,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:07:09,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:07:09,425 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:07:09,426 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:07:09,427 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:07:09,427 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:07:09,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:07:09,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:07:09,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:07:09,431 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:07:09,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:07:09,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:07:09,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:07:09,437 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:07:09,441 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:07:09,445 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:07:09,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:07:09,448 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:07:09,448 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:07:09,449 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:07:09,453 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:07:09,454 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:07:09,455 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:07:09,459 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:07:09,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:07:09,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:07:09,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:07:09,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:07:09,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:07:09,464 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:07:09,464 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:07:09,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:07:09,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:07:09,485 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:07:09,485 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:07:09,486 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:07:09,486 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:07:09,486 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:07:09,486 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:07:09,487 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:07:09,488 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:07:09,488 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:07:09,488 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:07:09,488 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:07:09,488 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:07:09,488 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:07:09,489 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:07:09,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:07:09,489 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:07:09,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:07:09,489 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:07:09,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:07:09,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:07:09,490 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:07:09,490 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:07:09,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:07:09,490 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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2018-11-28 18:07:09,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:07:09,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:07:09,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:07:09,568 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:07:09,568 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:07:09,569 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-28 18:07:09,636 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87523372d/5af447b94a6d4ec9959ced0287b0f186/FLAG65d8e8292 [2018-11-28 18:07:10,044 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:07:10,044 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-28 18:07:10,050 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87523372d/5af447b94a6d4ec9959ced0287b0f186/FLAG65d8e8292 [2018-11-28 18:07:10,418 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87523372d/5af447b94a6d4ec9959ced0287b0f186 [2018-11-28 18:07:10,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:07:10,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:07:10,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:07:10,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:07:10,427 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:07:10,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ebed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10, skipping insertion in model container [2018-11-28 18:07:10,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:07:10,457 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:07:10,652 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:07:10,660 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:07:10,679 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:07:10,701 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:07:10,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10 WrapperNode [2018-11-28 18:07:10,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:07:10,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:07:10,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:07:10,703 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:07:10,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:07:10,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:07:10,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:07:10,731 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:07:10,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (1/1) ... [2018-11-28 18:07:10,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:07:10,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:07:10,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:07:10,761 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:07:10,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (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 18:07:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:07:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:07:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2018-11-28 18:07:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2018-11-28 18:07:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-28 18:07:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-28 18:07:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:07:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:07:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:07:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:07:11,258 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:07:11,259 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:07:11,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:07:11 BoogieIcfgContainer [2018-11-28 18:07:11,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:07:11,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:07:11,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:07:11,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:07:11,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:07:10" (1/3) ... [2018-11-28 18:07:11,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68053701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:07:11, skipping insertion in model container [2018-11-28 18:07:11,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:07:10" (2/3) ... [2018-11-28 18:07:11,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68053701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:07:11, skipping insertion in model container [2018-11-28 18:07:11,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:07:11" (3/3) ... [2018-11-28 18:07:11,269 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call.i [2018-11-28 18:07:11,280 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:07:11,288 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:07:11,308 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:07:11,342 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:07:11,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:07:11,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:07:11,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:07:11,343 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:07:11,343 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:07:11,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:07:11,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:07:11,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:07:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 18:07:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:07:11,372 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:07:11,373 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:07:11,376 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:07:11,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:07:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash 708560652, now seen corresponding path program 1 times [2018-11-28 18:07:11,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:07:11,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:07:11,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:11,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:07:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:07:11,723 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 18:07:11,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:07:11,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:07:11,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:07:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:07:11,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:07:11,747 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-11-28 18:07:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:07:11,925 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2018-11-28 18:07:11,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:07:11,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-28 18:07:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:07:11,935 INFO L225 Difference]: With dead ends: 42 [2018-11-28 18:07:11,935 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 18:07:11,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:07:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 18:07:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-28 18:07:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 18:07:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-28 18:07:11,979 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2018-11-28 18:07:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:07:11,980 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-28 18:07:11,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:07:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-28 18:07:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 18:07:11,981 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:07:11,982 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:07:11,982 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:07:11,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:07:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1910985178, now seen corresponding path program 1 times [2018-11-28 18:07:11,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:07:11,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:07:11,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:11,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:07:11,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:07:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:07:12,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:07:12,201 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:07:12,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:07:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:07:12,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:07:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:07:12,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:07:12,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2018-11-28 18:07:12,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:07:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:07:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:07:12,536 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 10 states. [2018-11-28 18:07:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:07:12,752 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-28 18:07:12,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:07:12,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-28 18:07:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:07:12,754 INFO L225 Difference]: With dead ends: 30 [2018-11-28 18:07:12,754 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 18:07:12,755 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:07:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 18:07:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-11-28 18:07:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 18:07:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-28 18:07:12,762 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2018-11-28 18:07:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:07:12,763 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-28 18:07:12,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:07:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-28 18:07:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:07:12,764 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:07:12,764 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:07:12,765 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:07:12,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:07:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1165555160, now seen corresponding path program 2 times [2018-11-28 18:07:12,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:07:12,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:07:12,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:12,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:07:12,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:07:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:07:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:07:12,805 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:07:12,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:07:12 BoogieIcfgContainer [2018-11-28 18:07:12,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:07:12,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:07:12,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:07:12,832 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:07:12,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:07:11" (3/4) ... [2018-11-28 18:07:12,836 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:07:12,898 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:07:12,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:07:12,900 INFO L168 Benchmark]: Toolchain (without parser) took 2478.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -86.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:07:12,903 INFO L168 Benchmark]: CDTParser took 0.46 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 18:07:12,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.07 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:07:12,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.51 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 18:07:12,907 INFO L168 Benchmark]: Boogie Preprocessor took 29.40 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 18:07:12,908 INFO L168 Benchmark]: RCFGBuilder took 499.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:07:12,909 INFO L168 Benchmark]: TraceAbstraction took 1571.26 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: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:07:12,913 INFO L168 Benchmark]: Witness Printer took 66.93 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:07:12,921 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 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 279.07 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 27.51 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 29.40 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 499.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1571.26 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: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. * Witness Printer took 66.93 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; VAL [i=0] [L24] COND TRUE i<5 [L25] i++ VAL [i=1] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] RET check_error(i!=3) VAL [i=1] [L24] COND TRUE i<5 [L25] i++ VAL [i=2] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] RET check_error(i!=3) VAL [i=2] [L24] COND TRUE i<5 [L25] i++ VAL [i=3] [L29] CALL check_error(i!=3) VAL [\old(b)=0] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=0, b=0] [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 19 SDslu, 91 SDs, 0 SdLazy, 59 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 2 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...