./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/forester-heap/dll-token_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/forester-heap/dll-token_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 35a5ccff58935eefedf723cd2243fac7c8b8e61b ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:08:51,479 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:08:51,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:08:51,500 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:08:51,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:08:51,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:08:51,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:08:51,505 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:08:51,507 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:08:51,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:08:51,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:08:51,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:08:51,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:08:51,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:08:51,513 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:08:51,514 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:08:51,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:08:51,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:08:51,519 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:08:51,520 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:08:51,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:08:51,523 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:08:51,527 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:08:51,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:08:51,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:08:51,532 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:08:51,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:08:51,539 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:08:51,540 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:08:51,542 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:08:51,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:08:51,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:08:51,545 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:08:51,545 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:08:51,547 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:08:51,548 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:08:51,548 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:08:51,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:08:51,581 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:08:51,582 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:08:51,583 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:08:51,583 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:08:51,583 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:08:51,583 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:08:51,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:08:51,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:08:51,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:08:51,586 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:08:51,587 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:08:51,587 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:08:51,587 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:08:51,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:08:51,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:08:51,588 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:08:51,588 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:08:51,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:08:51,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:08:51,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:08:51,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:08:51,590 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:08:51,590 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:08:51,590 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:08:51,591 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 -> 35a5ccff58935eefedf723cd2243fac7c8b8e61b [2018-11-28 18:08:51,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:08:51,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:08:51,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:08:51,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:08:51,686 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:08:51,687 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/forester-heap/dll-token_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:51,751 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a49d176/5447aa72014041d5827ab12aa5f6871e/FLAG992ad2b3d [2018-11-28 18:08:52,269 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:08:52,271 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/forester-heap/dll-token_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:52,295 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a49d176/5447aa72014041d5827ab12aa5f6871e/FLAG992ad2b3d [2018-11-28 18:08:52,550 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a49d176/5447aa72014041d5827ab12aa5f6871e [2018-11-28 18:08:52,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:08:52,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:08:52,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:52,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:08:52,565 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:08:52,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:52" (1/1) ... [2018-11-28 18:08:52,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae763f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:52, skipping insertion in model container [2018-11-28 18:08:52,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:52" (1/1) ... [2018-11-28 18:08:52,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:08:52,645 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:08:53,052 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:53,064 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:08:53,197 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:53,262 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:08:53,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53 WrapperNode [2018-11-28 18:08:53,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:53,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:53,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:08:53,264 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:08:53,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:53,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:08:53,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:08:53,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:08:53,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (1/1) ... [2018-11-28 18:08:53,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:08:53,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:08:53,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:08:53,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:08:53,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (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 18:08:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:08:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:08:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:08:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:08:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:08:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 18:08:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 18:08:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:08:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:08:54,056 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:08:54,056 INFO L280 CfgBuilder]: Removed 15 assue(true) statements. [2018-11-28 18:08:54,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:54 BoogieIcfgContainer [2018-11-28 18:08:54,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:08:54,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:08:54,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:08:54,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:08:54,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:08:52" (1/3) ... [2018-11-28 18:08:54,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6287cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:54, skipping insertion in model container [2018-11-28 18:08:54,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:53" (2/3) ... [2018-11-28 18:08:54,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6287cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:54, skipping insertion in model container [2018-11-28 18:08:54,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:54" (3/3) ... [2018-11-28 18:08:54,069 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-token_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:54,080 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:08:54,088 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 18:08:54,107 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 18:08:54,140 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:08:54,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:08:54,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:08:54,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:08:54,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:08:54,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:08:54,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:08:54,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:08:54,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:08:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-28 18:08:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:08:54,167 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:54,168 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:54,171 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:54,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 71293511, now seen corresponding path program 1 times [2018-11-28 18:08:54,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:54,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:54,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:54,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:54,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:54,332 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 18:08:54,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:54,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:08:54,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:08:54,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:08:54,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:08:54,355 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-28 18:08:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:54,381 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2018-11-28 18:08:54,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:08:54,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 18:08:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:54,394 INFO L225 Difference]: With dead ends: 92 [2018-11-28 18:08:54,394 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:08:54,398 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 [2018-11-28 18:08:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:08:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:08:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:08:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-11-28 18:08:54,443 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2018-11-28 18:08:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:54,444 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-11-28 18:08:54,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:08:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-11-28 18:08:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:08:54,445 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:54,445 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:54,445 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:54,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash 70526890, now seen corresponding path program 1 times [2018-11-28 18:08:54,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:54,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:54,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:54,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:54,674 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 18:08:54,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:54,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:08:54,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:08:54,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:08:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:08:54,677 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2018-11-28 18:08:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:55,001 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-11-28 18:08:55,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:08:55,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 18:08:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:55,003 INFO L225 Difference]: With dead ends: 43 [2018-11-28 18:08:55,003 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:08:55,004 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:08:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:08:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:08:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:08:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-11-28 18:08:55,011 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2018-11-28 18:08:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:55,012 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-11-28 18:08:55,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:08:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-11-28 18:08:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:08:55,013 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:55,013 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:55,013 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:55,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2108677217, now seen corresponding path program 1 times [2018-11-28 18:08:55,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:55,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:55,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:55,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:55,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:55,117 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 18:08:55,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:55,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:08:55,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:08:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:08:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:08:55,119 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 4 states. [2018-11-28 18:08:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:55,250 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-11-28 18:08:55,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:08:55,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 18:08:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:55,253 INFO L225 Difference]: With dead ends: 67 [2018-11-28 18:08:55,253 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 18:08:55,253 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:08:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 18:08:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2018-11-28 18:08:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:08:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-11-28 18:08:55,262 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2018-11-28 18:08:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:55,263 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-11-28 18:08:55,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:08:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-11-28 18:08:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:08:55,265 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:55,265 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:55,265 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:55,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:55,266 INFO L82 PathProgramCache]: Analyzing trace with hash 461941694, now seen corresponding path program 1 times [2018-11-28 18:08:55,266 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:55,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:55,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:55,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:55,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:55,657 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 3 [2018-11-28 18:08:55,673 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 18:08:55,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:55,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:08:55,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:08:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:08:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:08:55,679 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2018-11-28 18:08:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:56,034 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2018-11-28 18:08:56,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:08:56,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 18:08:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:56,037 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:08:56,037 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 18:08:56,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:08:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 18:08:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-11-28 18:08:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 18:08:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-28 18:08:56,045 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 16 [2018-11-28 18:08:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:56,046 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-28 18:08:56,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:08:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-28 18:08:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:08:56,047 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:56,047 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:56,048 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:56,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash 461903958, now seen corresponding path program 1 times [2018-11-28 18:08:56,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:56,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:56,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:56,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:56,250 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 18:08:56,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:56,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:08:56,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:08:56,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:08:56,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:08:56,253 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 5 states. [2018-11-28 18:08:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:56,462 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-28 18:08:56,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:08:56,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 18:08:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:56,464 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:08:56,464 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:08:56,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:08:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:08:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:08:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:08:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-28 18:08:56,471 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2018-11-28 18:08:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:56,472 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-28 18:08:56,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:08:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-28 18:08:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:08:56,473 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:56,473 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:56,474 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:56,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:56,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1977605822, now seen corresponding path program 1 times [2018-11-28 18:08:56,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:56,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:56,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:56,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:56,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:56,555 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:08:56,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:08:56 BoogieIcfgContainer [2018-11-28 18:08:56,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:08:56,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:08:56,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:08:56,596 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:08:56,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:54" (3/4) ... [2018-11-28 18:08:56,599 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:08:56,661 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:08:56,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:08:56,662 INFO L168 Benchmark]: Toolchain (without parser) took 4105.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.7 MB in the beginning and 989.1 MB in the end (delta: -36.4 MB). Peak memory consumption was 100.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:56,663 INFO L168 Benchmark]: CDTParser took 0.19 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 18:08:56,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:56,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.46 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 18:08:56,665 INFO L168 Benchmark]: Boogie Preprocessor took 41.18 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 18:08:56,666 INFO L168 Benchmark]: RCFGBuilder took 709.10 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:56,666 INFO L168 Benchmark]: TraceAbstraction took 2537.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.9 MB in the end (delta: 94.7 MB). Peak memory consumption was 94.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:56,667 INFO L168 Benchmark]: Witness Printer took 65.21 ms. Allocated memory is still 1.2 GB. Free memory was 995.9 MB in the beginning and 989.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:56,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 704.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.46 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. * Boogie Preprocessor took 41.18 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 709.10 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2537.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.9 MB in the end (delta: 94.7 MB). Peak memory consumption was 94.7 MB. Max. memory is 11.5 GB. * Witness Printer took 65.21 ms. Allocated memory is still 1.2 GB. Free memory was 995.9 MB in the beginning and 989.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, x={24:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={24:0}] [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={24:0}] [L1019] EXPR x->data VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={24:0}, x->data=1] [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={24:0}, x->data=1] [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={21:0}, x->data=2] [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() VAL [head={24:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={21:0}, x={21:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. UNSAFE Result, 2.4s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 187 SDtfs, 95 SDslu, 238 SDs, 0 SdLazy, 139 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 5 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...