./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test06_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ldv-regression/test06_false-unreach-call_true-termination.c -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 eae8c8207b0324f06a17c285b94ce79cd751d6f9 .............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:23:10,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:23:10,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:23:10,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:23:10,091 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:23:10,092 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:23:10,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:23:10,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:23:10,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:23:10,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:23:10,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:23:10,104 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:23:10,105 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:23:10,108 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:23:10,115 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:23:10,115 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:23:10,118 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:23:10,122 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:23:10,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:23:10,130 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:23:10,132 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:23:10,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:23:10,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:23:10,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:23:10,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:23:10,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:23:10,145 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:23:10,145 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:23:10,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:23:10,150 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:23:10,150 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:23:10,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:23:10,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:23:10,154 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:23:10,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:23:10,156 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:23:10,156 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:23:10,183 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:23:10,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:23:10,186 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:23:10,189 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:23:10,189 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:23:10,189 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:23:10,190 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:23:10,190 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:23:10,190 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:23:10,190 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:23:10,190 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:23:10,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:23:10,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:23:10,192 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:23:10,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:23:10,193 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:23:10,193 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:23:10,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:23:10,195 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:23:10,195 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:23:10,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:23:10,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:23:10,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:23:10,196 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:23:10,196 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:23:10,198 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:23:10,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:23:10,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:23:10,198 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 -> eae8c8207b0324f06a17c285b94ce79cd751d6f9 [2018-12-31 04:23:10,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:23:10,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:23:10,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:23:10,287 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:23:10,288 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:23:10,289 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test06_false-unreach-call_true-termination.c [2018-12-31 04:23:10,353 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60da000/ea16fe3b5864424b80aba1612f45ba2c/FLAGd954bbcd3 [2018-12-31 04:23:10,811 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:23:10,812 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test06_false-unreach-call_true-termination.c [2018-12-31 04:23:10,818 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60da000/ea16fe3b5864424b80aba1612f45ba2c/FLAGd954bbcd3 [2018-12-31 04:23:11,178 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60da000/ea16fe3b5864424b80aba1612f45ba2c [2018-12-31 04:23:11,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:23:11,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:23:11,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:11,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:23:11,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:23:11,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75205fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11, skipping insertion in model container [2018-12-31 04:23:11,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:23:11,226 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:23:11,388 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:11,401 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:23:11,423 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:11,448 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:23:11,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11 WrapperNode [2018-12-31 04:23:11,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:11,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:11,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:23:11,450 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:23:11,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:11,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:23:11,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:23:11,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:23:11,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... [2018-12-31 04:23:11,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:23:11,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:23:11,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:23:11,552 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:23:11,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:23:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:23:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-31 04:23:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:23:11,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:23:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:23:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:23:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-31 04:23:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:23:12,179 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:23:12,180 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-31 04:23:12,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:12 BoogieIcfgContainer [2018-12-31 04:23:12,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:23:12,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:23:12,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:23:12,185 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:23:12,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:23:11" (1/3) ... [2018-12-31 04:23:12,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fcd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:12, skipping insertion in model container [2018-12-31 04:23:12,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:11" (2/3) ... [2018-12-31 04:23:12,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fcd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:12, skipping insertion in model container [2018-12-31 04:23:12,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:12" (3/3) ... [2018-12-31 04:23:12,189 INFO L112 eAbstractionObserver]: Analyzing ICFG test06_false-unreach-call_true-termination.c [2018-12-31 04:23:12,201 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:23:12,210 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:23:12,229 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:23:12,263 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:23:12,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:23:12,264 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:23:12,264 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:23:12,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:23:12,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:23:12,265 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:23:12,265 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:23:12,265 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:23:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-12-31 04:23:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 04:23:12,285 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:12,286 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 04:23:12,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash 889629865, now seen corresponding path program 1 times [2018-12-31 04:23:12,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:12,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:12,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:12,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:12,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:23:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:23:12,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:23:12,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:23:12,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 04:23:12,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 04:23:12,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:23:12,620 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2018-12-31 04:23:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:23:12,655 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-12-31 04:23:12,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 04:23:12,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-12-31 04:23:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:23:12,669 INFO L225 Difference]: With dead ends: 18 [2018-12-31 04:23:12,669 INFO L226 Difference]: Without dead ends: 8 [2018-12-31 04:23:12,672 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:23:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-31 04:23:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-31 04:23:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-31 04:23:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2018-12-31 04:23:12,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 6 [2018-12-31 04:23:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:23:12,704 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2018-12-31 04:23:12,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 04:23:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2018-12-31 04:23:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-31 04:23:12,705 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:12,705 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:23:12,705 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:12,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1804905802, now seen corresponding path program 1 times [2018-12-31 04:23:12,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:12,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:12,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:12,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:12,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:23:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:23:12,946 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:23:12,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:23:12 BoogieIcfgContainer [2018-12-31 04:23:12,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:23:12,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:23:12,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:23:12,986 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:23:12,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:12" (3/4) ... [2018-12-31 04:23:12,989 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:23:13,065 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:23:13,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:23:13,066 INFO L168 Benchmark]: Toolchain (without parser) took 1882.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -114.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,068 INFO L168 Benchmark]: CDTParser took 0.40 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. [2018-12-31 04:23:13,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.40 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:23:13,070 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,071 INFO L168 Benchmark]: RCFGBuilder took 629.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,075 INFO L168 Benchmark]: TraceAbstraction took 803.23 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,076 INFO L168 Benchmark]: Witness Printer took 79.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:13,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 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 264.40 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 629.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 803.23 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * Witness Printer took 79.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 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: 40]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int a, b; [L22] int *p1, *p2; [L24] p1 = &a [L25] p2 = &b [L27] b = 1 [L28] a = 5 [L30] EXPR \read(a) [L30] a-- [L32] EXPR \read(a) [L12] COND TRUE a == 4 [L5] EXPR \read(**p2) [L5] int *pq = *p2; [L7] EXPR \read(**p2) [L7] *p1 = *p2 [L8] *pq = 0 [L14] return 1; [L32] a = f(a, &p1, &p2) [L34] EXPR \read(*p1) [L34] COND TRUE *p1 == 0 [L40] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...