./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.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 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2018-12-31 04:08:56,740 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:08:56,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:08:56,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:08:56,762 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:08:56,764 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:08:56,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:08:56,768 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:08:56,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:08:56,773 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:08:56,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:08:56,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:08:56,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:08:56,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:08:56,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:08:56,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:08:56,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:08:56,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:08:56,802 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:08:56,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:08:56,806 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:08:56,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:08:56,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:08:56,815 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:08:56,815 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:08:56,816 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:08:56,819 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:08:56,821 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:08:56,822 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:08:56,825 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:08:56,825 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:08:56,826 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:08:56,826 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:08:56,827 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:08:56,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:08:56,831 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:08:56,832 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:08:56,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:08:56,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:08:56,855 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:08:56,856 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:08:56,856 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:08:56,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:08:56,857 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:08:56,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:08:56,858 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:08:56,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:08:56,858 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:08:56,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:08:56,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:08:56,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:08:56,862 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:08:56,862 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:08:56,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:08:56,862 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:08:56,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:08:56,862 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:08:56,864 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:08:56,864 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:08:56,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:08:56,864 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 -> 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff [2018-12-31 04:08:56,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:08:56,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:08:56,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:08:56,945 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:08:56,946 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:08:56,946 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:08:57,015 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad6d6e2e/158f800d672f4309b86a99db2469a745/FLAG7e6648aa8 [2018-12-31 04:08:57,549 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:08:57,550 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:08:57,566 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad6d6e2e/158f800d672f4309b86a99db2469a745/FLAG7e6648aa8 [2018-12-31 04:08:57,823 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad6d6e2e/158f800d672f4309b86a99db2469a745 [2018-12-31 04:08:57,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:08:57,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:08:57,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:08:57,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:08:57,833 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:08:57,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:08:57" (1/1) ... [2018-12-31 04:08:57,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1249e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:57, skipping insertion in model container [2018-12-31 04:08:57,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:08:57" (1/1) ... [2018-12-31 04:08:57,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:08:57,901 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:08:58,230 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:08:58,242 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:08:58,294 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:08:58,430 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:08:58,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58 WrapperNode [2018-12-31 04:08:58,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:08:58,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:08:58,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:08:58,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:08:58,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:08:58,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:08:58,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:08:58,494 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:08:58,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (1/1) ... [2018-12-31 04:08:58,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:08:58,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:08:58,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:08:58,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:08:58,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (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 [2018-12-31 04:08:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:08:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:08:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2018-12-31 04:08:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-31 04:08:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-31 04:08:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:08:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:08:59,084 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:08:59,084 INFO L280 CfgBuilder]: Removed 11 assue(true) statements. [2018-12-31 04:08:59,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:08:59 BoogieIcfgContainer [2018-12-31 04:08:59,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:08:59,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:08:59,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:08:59,089 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:08:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:08:57" (1/3) ... [2018-12-31 04:08:59,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16363f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:08:59, skipping insertion in model container [2018-12-31 04:08:59,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:08:58" (2/3) ... [2018-12-31 04:08:59,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16363f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:08:59, skipping insertion in model container [2018-12-31 04:08:59,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:08:59" (3/3) ... [2018-12-31 04:08:59,094 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:08:59,105 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:08:59,114 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:08:59,132 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:08:59,162 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:08:59,162 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:08:59,163 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:08:59,163 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:08:59,163 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:08:59,163 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:08:59,163 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:08:59,163 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:08:59,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:08:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-12-31 04:08:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:08:59,186 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:08:59,188 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:08:59,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:08:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:08:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -171712200, now seen corresponding path program 1 times [2018-12-31 04:08:59,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:08:59,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:08:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:08:59,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:08:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:08:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:08:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:08:59,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:08:59,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:08:59,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:08:59,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:08:59,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:08:59,367 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-12-31 04:08:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:08:59,384 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2018-12-31 04:08:59,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:08:59,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-31 04:08:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:08:59,395 INFO L225 Difference]: With dead ends: 38 [2018-12-31 04:08:59,395 INFO L226 Difference]: Without dead ends: 20 [2018-12-31 04:08:59,398 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 [2018-12-31 04:08:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-31 04:08:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-31 04:08:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-31 04:08:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-12-31 04:08:59,431 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2018-12-31 04:08:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:08:59,432 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-12-31 04:08:59,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:08:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2018-12-31 04:08:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-31 04:08:59,433 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:08:59,433 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:08:59,434 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:08:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:08:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2019338034, now seen corresponding path program 1 times [2018-12-31 04:08:59,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:08:59,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:08:59,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:08:59,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:08:59,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:08:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:08:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:08:59,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:08:59,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:08:59,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:08:59,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:08:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:08:59,632 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2018-12-31 04:09:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:09:00,096 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-12-31 04:09:00,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:09:00,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-31 04:09:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:09:00,098 INFO L225 Difference]: With dead ends: 44 [2018-12-31 04:09:00,098 INFO L226 Difference]: Without dead ends: 40 [2018-12-31 04:09:00,099 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:09:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-31 04:09:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2018-12-31 04:09:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-31 04:09:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-12-31 04:09:00,107 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2018-12-31 04:09:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:09:00,107 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-12-31 04:09:00,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:09:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-12-31 04:09:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-31 04:09:00,108 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:09:00,109 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:09:00,109 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:09:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:09:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash 790043241, now seen corresponding path program 1 times [2018-12-31 04:09:00,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:09:00,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:09:00,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:09:00,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:09:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:09:00,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:09:00,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:09:00,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:09:00,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:09:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:09:00,232 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2018-12-31 04:09:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:09:00,406 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-31 04:09:00,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:09:00,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-31 04:09:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:09:00,409 INFO L225 Difference]: With dead ends: 46 [2018-12-31 04:09:00,410 INFO L226 Difference]: Without dead ends: 38 [2018-12-31 04:09:00,410 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:09:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-31 04:09:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-12-31 04:09:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 04:09:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-31 04:09:00,415 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2018-12-31 04:09:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:09:00,416 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-31 04:09:00,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:09:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-31 04:09:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-31 04:09:00,417 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:09:00,417 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:09:00,417 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:09:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:09:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash -453698280, now seen corresponding path program 1 times [2018-12-31 04:09:00,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:09:00,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:09:00,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:09:00,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:09:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:09:00,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:09:00,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:09:00,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:09:00,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:09:00,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:09:00,629 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2018-12-31 04:09:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:09:00,798 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-31 04:09:00,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:09:00,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-31 04:09:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:09:00,801 INFO L225 Difference]: With dead ends: 44 [2018-12-31 04:09:00,801 INFO L226 Difference]: Without dead ends: 34 [2018-12-31 04:09:00,803 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:09:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-31 04:09:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2018-12-31 04:09:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-31 04:09:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-12-31 04:09:00,808 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2018-12-31 04:09:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:09:00,808 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-12-31 04:09:00,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:09:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-12-31 04:09:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-31 04:09:00,809 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:09:00,810 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:09:00,810 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:09:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:09:00,810 INFO L82 PathProgramCache]: Analyzing trace with hash -709641469, now seen corresponding path program 1 times [2018-12-31 04:09:00,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:09:00,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:09:00,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:09:00,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:09:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:09:00,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:09:00,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:09:00,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 04:09:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 04:09:00,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:09:00,869 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2018-12-31 04:09:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:09:00,900 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2018-12-31 04:09:00,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 04:09:00,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-31 04:09:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:09:00,902 INFO L225 Difference]: With dead ends: 50 [2018-12-31 04:09:00,903 INFO L226 Difference]: Without dead ends: 34 [2018-12-31 04:09:00,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:09:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-31 04:09:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-12-31 04:09:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-31 04:09:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-12-31 04:09:00,908 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2018-12-31 04:09:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:09:00,908 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-12-31 04:09:00,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 04:09:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-12-31 04:09:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-31 04:09:00,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:09:00,910 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:09:00,911 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:09:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:09:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1153378414, now seen corresponding path program 1 times [2018-12-31 04:09:00,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:09:00,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:09:00,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:09:00,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:09:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:09:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:09:01,007 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:09:01,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:09:01 BoogieIcfgContainer [2018-12-31 04:09:01,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:09:01,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:09:01,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:09:01,045 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:09:01,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:08:59" (3/4) ... [2018-12-31 04:09:01,050 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:09:01,109 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:09:01,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:09:01,111 INFO L168 Benchmark]: Toolchain (without parser) took 3283.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.3 MB in the beginning and 1.0 GB in the end (delta: -68.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:09:01,113 INFO L168 Benchmark]: CDTParser took 1.30 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. [2018-12-31 04:09:01,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2018-12-31 04:09:01,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.13 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. [2018-12-31 04:09:01,116 INFO L168 Benchmark]: Boogie Preprocessor took 31.35 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. [2018-12-31 04:09:01,116 INFO L168 Benchmark]: RCFGBuilder took 560.04 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-12-31 04:09:01,117 INFO L168 Benchmark]: TraceAbstraction took 1958.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.9 MB). Peak memory consumption was 80.9 MB. Max. memory is 11.5 GB. [2018-12-31 04:09:01,118 INFO L168 Benchmark]: Witness Printer took 64.44 ms. Allocated memory is still 1.2 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. [2018-12-31 04:09:01,123 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 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 602.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.13 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. * Boogie Preprocessor took 31.35 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 560.04 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1958.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.9 MB). Peak memory consumption was 80.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.44 ms. Allocated memory is still 1.2 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: 652]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] p->h = 1 [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] p->n = t [L641] EXPR p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 [L644] p = a [L645] COND TRUE \read(flag) [L646] EXPR p->h [L646] COND FALSE !(p->h == 2) [L651] EXPR p->h [L651] COND TRUE p->h != 3 [L652] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. UNSAFE Result, 1.8s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 107 SDtfs, 71 SDslu, 136 SDs, 0 SdLazy, 135 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, 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, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...