./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-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/loop-acceleration/phases_false-unreach-call2_false-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 64bcaa7dcfb14b395c299a14aa5941fba1dc63cc ........................................................................................................................................................................................................................................................................ 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 18:18:48,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:18:48,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:18:48,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:18:48,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:18:48,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:18:48,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:18:48,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:18:48,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:18:48,608 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:18:48,609 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:18:48,609 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:18:48,610 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:18:48,611 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:18:48,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:18:48,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:18:48,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:18:48,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:18:48,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:18:48,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:18:48,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:18:48,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:18:48,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:18:48,626 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:18:48,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:18:48,628 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:18:48,629 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:18:48,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:18:48,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:18:48,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:18:48,633 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:18:48,633 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:18:48,634 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:18:48,634 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:18:48,635 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:18:48,636 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:18:48,637 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:18:48,653 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:18:48,653 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:18:48,654 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:18:48,654 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:18:48,655 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:18:48,655 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:18:48,656 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:18:48,656 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:18:48,656 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:18:48,656 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:18:48,656 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:18:48,657 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:18:48,657 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:18:48,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:18:48,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:18:48,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:18:48,658 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:18:48,658 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:18:48,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:18:48,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:18:48,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:18:48,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:18:48,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:18:48,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:18:48,661 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:18:48,661 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:18:48,662 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:18:48,662 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:18:48,662 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:18:48,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:18:48,662 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 -> 64bcaa7dcfb14b395c299a14aa5941fba1dc63cc [2018-11-28 18:18:48,699 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:18:48,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:18:48,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:18:48,716 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:18:48,717 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:18:48,718 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-termination.i [2018-11-28 18:18:48,773 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dee43a45/fafa1ab311c446fbb960e26f067f33ad/FLAGb18392689 [2018-11-28 18:18:49,212 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:18:49,215 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-termination.i [2018-11-28 18:18:49,221 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dee43a45/fafa1ab311c446fbb960e26f067f33ad/FLAGb18392689 [2018-11-28 18:18:49,645 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dee43a45/fafa1ab311c446fbb960e26f067f33ad [2018-11-28 18:18:49,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:18:49,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:18:49,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:18:49,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:18:49,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:18:49,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3613db22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49, skipping insertion in model container [2018-11-28 18:18:49,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:18:49,691 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:18:49,882 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:18:49,886 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:18:49,904 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:18:49,922 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:18:49,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49 WrapperNode [2018-11-28 18:18:49,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:18:49,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:18:49,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:18:49,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:18:49,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:18:49,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:18:49,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:18:49,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:18:49,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (1/1) ... [2018-11-28 18:18:49,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:18:49,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:18:49,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:18:49,974 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:18:49,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (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 18:18:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:18:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:18:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:18:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:18:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:18:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:18:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:18:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:18:50,329 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:18:50,329 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:18:50,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:18:50 BoogieIcfgContainer [2018-11-28 18:18:50,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:18:50,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:18:50,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:18:50,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:18:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:18:49" (1/3) ... [2018-11-28 18:18:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b544f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:18:50, skipping insertion in model container [2018-11-28 18:18:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:18:49" (2/3) ... [2018-11-28 18:18:50,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b544f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:18:50, skipping insertion in model container [2018-11-28 18:18:50,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:18:50" (3/3) ... [2018-11-28 18:18:50,340 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_false-unreach-call2_false-termination.i [2018-11-28 18:18:50,351 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:18:50,360 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:18:50,381 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:18:50,450 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:18:50,454 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:18:50,454 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:18:50,455 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:18:50,455 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:18:50,455 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:18:50,455 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:18:50,455 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:18:50,455 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:18:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:18:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:18:50,501 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:18:50,502 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:18:50,504 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:18:50,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:18:50,511 INFO L82 PathProgramCache]: Analyzing trace with hash -133618162, now seen corresponding path program 1 times [2018-11-28 18:18:50,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:18:50,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:18:50,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:18:50,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:18:50,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:18:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:18:50,610 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 18:18:50,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:18:50,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:18:50,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:18:50,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:18:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:18:50,633 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-28 18:18:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:18:50,655 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-11-28 18:18:50,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:18:50,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-28 18:18:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:18:50,665 INFO L225 Difference]: With dead ends: 30 [2018-11-28 18:18:50,665 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 18:18:50,669 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 18:18:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 18:18:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 18:18:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 18:18:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-28 18:18:50,707 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2018-11-28 18:18:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:18:50,708 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-28 18:18:50,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:18:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-28 18:18:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:18:50,709 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:18:50,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:18:50,710 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:18:50,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:18:50,710 INFO L82 PathProgramCache]: Analyzing trace with hash -142853372, now seen corresponding path program 1 times [2018-11-28 18:18:50,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:18:50,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:18:50,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:18:50,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:18:50,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:18:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:18:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:18:50,762 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:18:50,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:18:50 BoogieIcfgContainer [2018-11-28 18:18:50,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:18:50,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:18:50,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:18:50,789 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:18:50,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:18:50" (3/4) ... [2018-11-28 18:18:50,792 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:18:50,843 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:18:50,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:18:50,844 INFO L168 Benchmark]: Toolchain (without parser) took 1194.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:18:50,848 INFO L168 Benchmark]: CDTParser took 0.18 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 18:18:50,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.00 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:18:50,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.71 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:18:50,852 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:18:50,853 INFO L168 Benchmark]: RCFGBuilder took 356.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:18:50,854 INFO L168 Benchmark]: TraceAbstraction took 456.75 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:18:50,856 INFO L168 Benchmark]: Witness Printer took 54.33 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 18:18:50,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 271.00 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 23.71 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 356.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 456.75 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 54.33 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] unsigned int x = 1; [L12] unsigned int y = __VERIFIER_nondet_uint(); [L13] COND FALSE !(!(y > 0)) VAL [x=1, y=1] [L14] COND FALSE !(x < y) VAL [x=1, y=1] [L21] CALL __VERIFIER_assert(x != y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 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=19occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...