./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 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/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 0.1.24-91b1670 [2018-11-28 18:06:24,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:06:24,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:06:24,383 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:06:24,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:06:24,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:06:24,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:06:24,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:06:24,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:06:24,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:06:24,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:06:24,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:06:24,394 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:06:24,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:06:24,396 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:06:24,397 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:06:24,398 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:06:24,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:06:24,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:06:24,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:06:24,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:06:24,407 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:06:24,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:06:24,415 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:06:24,416 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:06:24,417 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:06:24,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:06:24,420 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:06:24,421 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:06:24,422 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:06:24,422 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:06:24,422 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:06:24,423 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:06:24,423 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:06:24,424 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:06:24,425 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:06:24,425 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:06:24,455 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:06:24,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:06:24,458 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:06:24,459 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:06:24,459 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:06:24,461 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:06:24,461 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:06:24,461 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:06:24,461 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:06:24,461 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:06:24,462 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:06:24,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:06:24,463 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:06:24,463 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:06:24,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:06:24,464 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:06:24,464 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:06:24,464 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:06:24,464 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:06:24,465 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:06:24,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:06:24,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:06:24,465 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:06:24,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:06:24,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:06:24,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:06:24,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:06:24,469 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:06:24,469 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:06:24,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:06:24,469 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 [2018-11-28 18:06:24,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:06:24,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:06:24,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:06:24,560 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:06:24,561 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:06:24,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:06:24,626 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940dc732a/034f6346cbfb421991e74fb8401bdc81/FLAG7fd30e9c2 [2018-11-28 18:06:25,178 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:06:25,179 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:06:25,196 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940dc732a/034f6346cbfb421991e74fb8401bdc81/FLAG7fd30e9c2 [2018-11-28 18:06:25,473 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940dc732a/034f6346cbfb421991e74fb8401bdc81 [2018-11-28 18:06:25,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:06:25,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:06:25,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:06:25,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:06:25,485 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:06:25,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:06:25" (1/1) ... [2018-11-28 18:06:25,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e3ec09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:25, skipping insertion in model container [2018-11-28 18:06:25,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:06:25" (1/1) ... [2018-11-28 18:06:25,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:06:25,568 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:06:25,969 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:06:25,980 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:06:26,032 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:06:26,099 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:06:26,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26 WrapperNode [2018-11-28 18:06:26,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:06:26,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:06:26,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:06:26,101 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:06:26,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:06:26,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:06:26,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:06:26,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:06:26,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (1/1) ... [2018-11-28 18:06:26,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:06:26,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:06:26,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:06:26,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:06:26,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (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 18:06:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 18:06:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 18:06:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:06:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:06:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:06:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:06:26,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:06:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:06:26,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:06:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 18:06:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 18:06:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:06:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:06:26,837 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:06:26,838 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 18:06:26,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:26 BoogieIcfgContainer [2018-11-28 18:06:26,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:06:26,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:06:26,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:06:26,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:06:26,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:06:25" (1/3) ... [2018-11-28 18:06:26,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e7bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:06:26, skipping insertion in model container [2018-11-28 18:06:26,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:26" (2/3) ... [2018-11-28 18:06:26,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e7bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:06:26, skipping insertion in model container [2018-11-28 18:06:26,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:26" (3/3) ... [2018-11-28 18:06:26,847 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:06:26,857 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:06:26,865 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:06:26,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:06:26,913 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:06:26,914 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:06:26,914 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:06:26,914 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:06:26,915 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:06:26,915 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:06:26,915 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:06:26,915 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:06:26,915 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:06:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-28 18:06:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 18:06:26,938 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:26,939 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:26,942 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:26,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1659708178, now seen corresponding path program 1 times [2018-11-28 18:06:26,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:26,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:27,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:27,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:27,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:06:27,098 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 18:06:27,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:06:27,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:06:27,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:06:27,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:06:27,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:06:27,119 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-11-28 18:06:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:06:27,141 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2018-11-28 18:06:27,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:06:27,143 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-28 18:06:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:06:27,152 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:06:27,153 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 18:06:27,156 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 18:06:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 18:06:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 18:06:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 18:06:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 18:06:27,199 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2018-11-28 18:06:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:06:27,200 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 18:06:27,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:06:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-28 18:06:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 18:06:27,201 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:27,201 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:27,201 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:27,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1269377224, now seen corresponding path program 1 times [2018-11-28 18:06:27,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:27,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:27,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:27,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:27,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:06:27,555 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 18:06:27,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:06:27,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:06:27,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:06:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:06:27,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:06:27,558 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2018-11-28 18:06:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:06:28,032 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2018-11-28 18:06:28,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:06:28,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 18:06:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:06:28,035 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:06:28,035 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:06:28,037 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:06:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:06:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2018-11-28 18:06:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 18:06:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-11-28 18:06:28,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2018-11-28 18:06:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:06:28,046 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-11-28 18:06:28,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:06:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-11-28 18:06:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:06:28,047 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:28,047 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:28,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:28,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 149476515, now seen corresponding path program 1 times [2018-11-28 18:06:28,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:28,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:28,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:28,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:06:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:06:28,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:06:28,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:06:28,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:06:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:06:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:06:28,195 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2018-11-28 18:06:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:06:28,443 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-11-28 18:06:28,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:06:28,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 18:06:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:06:28,445 INFO L225 Difference]: With dead ends: 50 [2018-11-28 18:06:28,445 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 18:06:28,446 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 [2018-11-28 18:06:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 18:06:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2018-11-28 18:06:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 18:06:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-11-28 18:06:28,453 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2018-11-28 18:06:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:06:28,453 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-11-28 18:06:28,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:06:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-11-28 18:06:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:06:28,455 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:28,455 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:28,455 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:28,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:28,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1094265006, now seen corresponding path program 1 times [2018-11-28 18:06:28,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:28,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:28,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:28,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:06:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:06:28,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:06:28,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:06:28,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:06:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:06:28,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:06:28,597 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2018-11-28 18:06:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:06:28,749 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-11-28 18:06:28,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:06:28,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 18:06:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:06:28,752 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:06:28,752 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 18:06:28,753 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 [2018-11-28 18:06:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 18:06:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-11-28 18:06:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 18:06:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-28 18:06:28,759 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2018-11-28 18:06:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:06:28,760 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-28 18:06:28,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:06:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-28 18:06:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:06:28,761 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:28,761 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:28,761 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:28,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1856827007, now seen corresponding path program 1 times [2018-11-28 18:06:28,762 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:28,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:28,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:28,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:06:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:06:28,868 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:06:28,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:06:28 BoogieIcfgContainer [2018-11-28 18:06:28,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:06:28,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:06:28,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:06:28,913 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:06:28,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:26" (3/4) ... [2018-11-28 18:06:28,917 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:06:28,982 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:06:28,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:06:28,983 INFO L168 Benchmark]: Toolchain (without parser) took 3505.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -70.3 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:28,985 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:28,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 931.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:28,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:28,988 INFO L168 Benchmark]: Boogie Preprocessor took 37.45 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 18:06:28,988 INFO L168 Benchmark]: RCFGBuilder took 588.17 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:28,989 INFO L168 Benchmark]: TraceAbstraction took 2072.08 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: 80.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:28,990 INFO L168 Benchmark]: Witness Printer took 70.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:28,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 620.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 931.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 111.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.45 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 588.17 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2072.08 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: 80.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. * Witness Printer took 70.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. 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)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}] [L630] COND FALSE !(a == 0) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}] [L631] p = a VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, p={14:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] p->h = 2 VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, p={14:0}] [L638] t = (List) malloc(sizeof(struct node)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, t={17:0}] [L639] COND FALSE !(t == 0) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, t={17:0}] [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 VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, t={17:0}] [L645] COND FALSE !(\read(flag)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, t={17:0}] [L649] EXPR p->h VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, p->h=2, t={17:0}] [L649] COND FALSE !(p->h == 1) [L651] EXPR p->h VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, p->h=2, t={17:0}] [L651] COND TRUE p->h != 3 [L652] __VERIFIER_error() VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={17:0}, malloc(sizeof(struct node))={14:0}, p={14:0}, t={17:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. UNSAFE Result, 2.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 63 SDslu, 159 SDs, 0 SdLazy, 127 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 2956 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...