./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test_while_int.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 0.1.24-30f4e4a [2019-11-27 23:53:47,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:47,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:47,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:47,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:47,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:47,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:47,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:47,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:47,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:47,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:47,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:47,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:47,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:47,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:47,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:47,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:47,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:47,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:47,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:47,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:47,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:47,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:47,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:47,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:47,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:47,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:47,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:47,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:47,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:47,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:47,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:47,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:47,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:47,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:47,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:47,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:47,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:47,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:47,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:47,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:47,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:47,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:47,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:47,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:47,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:47,349 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:47,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:47,350 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:47,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:47,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:47,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:47,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:47,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:47,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:47,351 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:47,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:47,352 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:47,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:47,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:47,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:47,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:47,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:47,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:47,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:47,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:47,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:47,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:47,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:47,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:47,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2019-11-27 23:53:47,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:47,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:47,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:47,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:47,704 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:47,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-27 23:53:47,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebae8f6/752c092055474df9be5af63bc74be0f3/FLAGded0f99d8 [2019-11-27 23:53:48,205 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:48,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-27 23:53:48,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebae8f6/752c092055474df9be5af63bc74be0f3/FLAGded0f99d8 [2019-11-27 23:53:48,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebae8f6/752c092055474df9be5af63bc74be0f3 [2019-11-27 23:53:48,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:48,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:48,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:48,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:48,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:48,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:48,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4667024d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48, skipping insertion in model container [2019-11-27 23:53:48,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:48,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:48,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:48,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:48,846 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:48,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:48,879 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:48,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48 WrapperNode [2019-11-27 23:53:48,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:48,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:48,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:48,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:48,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:48,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:49,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:49,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:49,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:49,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... [2019-11-27 23:53:49,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:49,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:49,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:49,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:49,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:49,248 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:49,248 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-27 23:53:49,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:49 BoogieIcfgContainer [2019-11-27 23:53:49,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:49,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:49,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:49,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:49,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:48" (1/3) ... [2019-11-27 23:53:49,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:49, skipping insertion in model container [2019-11-27 23:53:49,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:48" (2/3) ... [2019-11-27 23:53:49,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:49, skipping insertion in model container [2019-11-27 23:53:49,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:49" (3/3) ... [2019-11-27 23:53:49,258 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2019-11-27 23:53:49,268 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:49,273 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:49,286 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:49,310 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:49,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:49,311 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:49,311 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:49,311 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:49,311 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:49,311 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:49,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-27 23:53:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:53:49,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:49,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:53:49,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-11-27 23:53:49,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:49,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73489536] [2019-11-27 23:53:49,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:49,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73489536] [2019-11-27 23:53:49,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:49,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:53:49,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781142578] [2019-11-27 23:53:49,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:53:49,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:49,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:53:49,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:53:49,545 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-27 23:53:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:49,672 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-27 23:53:49,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:53:49,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-27 23:53:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:49,686 INFO L225 Difference]: With dead ends: 19 [2019-11-27 23:53:49,687 INFO L226 Difference]: Without dead ends: 7 [2019-11-27 23:53:49,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:53:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-27 23:53:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-27 23:53:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-27 23:53:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-27 23:53:49,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-27 23:53:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:49,734 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-27 23:53:49,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:53:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-27 23:53:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:53:49,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:49,735 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-27 23:53:49,736 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-11-27 23:53:49,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:49,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491810776] [2019-11-27 23:53:49,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:49,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491810776] [2019-11-27 23:53:49,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415130620] [2019-11-27 23:53:49,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:49,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:53:49,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:49,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:49,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:49,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-27 23:53:49,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97553917] [2019-11-27 23:53:49,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:53:49,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:53:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:53:49,908 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-27 23:53:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:49,949 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-27 23:53:49,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:53:49,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-27 23:53:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:49,951 INFO L225 Difference]: With dead ends: 12 [2019-11-27 23:53:49,951 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:53:49,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:53:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:53:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-27 23:53:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-27 23:53:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-27 23:53:49,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-27 23:53:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:49,956 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-27 23:53:49,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:53:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-27 23:53:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:53:49,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:49,958 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-11-27 23:53:50,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:50,167 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:50,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-11-27 23:53:50,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:50,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005944449] [2019-11-27 23:53:50,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:50,224 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:50,225 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:50,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:50 BoogieIcfgContainer [2019-11-27 23:53:50,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:50,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:50,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:50,245 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:50,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:49" (3/4) ... [2019-11-27 23:53:50,248 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:50,301 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:50,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:50,304 INFO L168 Benchmark]: Toolchain (without parser) took 1693.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,304 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:50,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,306 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 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. [2019-11-27 23:53:50,307 INFO L168 Benchmark]: RCFGBuilder took 217.82 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,307 INFO L168 Benchmark]: TraceAbstraction took 993.08 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,308 INFO L168 Benchmark]: Witness Printer took 56.62 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:50,312 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 128.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.76 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. * RCFGBuilder took 217.82 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 993.08 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.62 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: 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; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...