./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.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 19c675897a6506757b73d61913c0ceb3a779b5c8 ...................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 00:00:00,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:00:00,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:00:00,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:00:00,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:00:00,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:00:00,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:00:00,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:00:00,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:00:00,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:00:00,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:00:00,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:00:00,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:00:00,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:00:00,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:00:00,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:00:00,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:00:00,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:00:00,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:00:00,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:00:00,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:00:00,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:00:00,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:00:00,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:00:00,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:00:00,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:00:00,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:00:00,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:00:00,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:00:00,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:00:00,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:00:00,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:00:00,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:00:00,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:00:00,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:00:00,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:00:00,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:00:00,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:00:00,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:00:00,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:00:00,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:00:00,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:00:00,262 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:00:00,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:00:00,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:00:00,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:00:00,265 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:00:00,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:00:00,265 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:00:00,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:00:00,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:00:00,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:00:00,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:00:00,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:00:00,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:00:00,270 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:00:00,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:00:00,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:00:00,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:00:00,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:00:00,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:00:00,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:00:00,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:00:00,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:00:00,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:00:00,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:00:00,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:00:00,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:00:00,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:00:00,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:00:00,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 19c675897a6506757b73d61913c0ceb3a779b5c8 [2019-11-28 00:00:00,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:00:00,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:00:00,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:00:00,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:00:00,602 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:00:00,604 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2019-11-28 00:00:00,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36206711d/3573647a40154894b8e43e434e5f8fa4/FLAG70e0135ff [2019-11-28 00:00:01,148 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:00:01,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2019-11-28 00:00:01,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36206711d/3573647a40154894b8e43e434e5f8fa4/FLAG70e0135ff [2019-11-28 00:00:01,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36206711d/3573647a40154894b8e43e434e5f8fa4 [2019-11-28 00:00:01,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:00:01,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:00:01,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:00:01,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:00:01,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:00:01,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2f9c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01, skipping insertion in model container [2019-11-28 00:00:01,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:00:01,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:00:01,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:00:01,775 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:00:01,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:00:01,880 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:00:01,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01 WrapperNode [2019-11-28 00:00:01,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:00:01,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:00:01,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:00:01,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:00:01,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:00:01,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:00:01,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:00:01,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:00:01,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (1/1) ... [2019-11-28 00:00:01,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:00:01,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:00:01,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:00:01,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:00:01,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (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 [2019-11-28 00:00:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 00:00:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:00:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:00:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 00:00:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 00:00:02,203 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:00:02,204 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:00:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:02 BoogieIcfgContainer [2019-11-28 00:00:02,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:00:02,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:00:02,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:00:02,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:00:02,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:00:01" (1/3) ... [2019-11-28 00:00:02,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:02, skipping insertion in model container [2019-11-28 00:00:02,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:01" (2/3) ... [2019-11-28 00:00:02,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:02, skipping insertion in model container [2019-11-28 00:00:02,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:02" (3/3) ... [2019-11-28 00:00:02,213 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2019-11-28 00:00:02,222 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:00:02,228 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:00:02,237 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:00:02,255 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:00:02,255 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:00:02,255 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:00:02,256 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:00:02,256 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:00:02,256 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:00:02,256 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:00:02,256 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:00:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 00:00:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:00:02,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:00:02,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:00:02,274 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:00:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:00:02,280 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2019-11-28 00:00:02,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:00:02,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262070590] [2019-11-28 00:00:02,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:00:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:00:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:00:02,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262070590] [2019-11-28 00:00:02,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:00:02,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 00:00:02,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069102037] [2019-11-28 00:00:02,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:00:02,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:00:02,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:00:02,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:00:02,619 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2019-11-28 00:00:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:00:02,715 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-28 00:00:02,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:00:02,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 00:00:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:00:02,728 INFO L225 Difference]: With dead ends: 33 [2019-11-28 00:00:02,729 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 00:00:02,732 INFO L630 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 [2019-11-28 00:00:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 00:00:02,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-11-28 00:00:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 00:00:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-28 00:00:02,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2019-11-28 00:00:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:00:02,771 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-28 00:00:02,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:00:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-28 00:00:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 00:00:02,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:00:02,773 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:00:02,773 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:00:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:00:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2019-11-28 00:00:02,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:00:02,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069796485] [2019-11-28 00:00:02,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:00:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:00:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:00:02,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069796485] [2019-11-28 00:00:02,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172308759] [2019-11-28 00:00:02,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:00:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:00:02,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-28 00:00:02,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:00:03,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:00:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:00:03,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:00:03,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2019-11-28 00:00:03,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651118091] [2019-11-28 00:00:03,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:00:03,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:00:03,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:00:03,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:00:03,085 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2019-11-28 00:00:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:00:03,150 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 00:00:03,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:00:03,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-28 00:00:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:00:03,152 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:00:03,152 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 00:00:03,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:00:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 00:00:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-11-28 00:00:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:00:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-28 00:00:03,162 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2019-11-28 00:00:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:00:03,162 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-28 00:00:03,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:00:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-28 00:00:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:00:03,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:00:03,164 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2019-11-28 00:00:03,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:00:03,367 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:00:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:00:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2019-11-28 00:00:03,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:00:03,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36500962] [2019-11-28 00:00:03,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:00:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:00:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:00:03,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 00:00:03,474 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 00:00:03,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:00:03 BoogieIcfgContainer [2019-11-28 00:00:03,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:00:03,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:00:03,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:00:03,532 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:00:03,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:02" (3/4) ... [2019-11-28 00:00:03,536 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 00:00:03,602 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:00:03,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:00:03,606 INFO L168 Benchmark]: Toolchain (without parser) took 2077.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -95.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,607 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:00:03,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.60 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. [2019-11-28 00:00:03,621 INFO L168 Benchmark]: Boogie Preprocessor took 23.47 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,624 INFO L168 Benchmark]: RCFGBuilder took 262.31 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,625 INFO L168 Benchmark]: TraceAbstraction took 1324.28 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: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,626 INFO L168 Benchmark]: Witness Printer took 71.91 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:00:03,631 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.60 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 23.47 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 262.31 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1324.28 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: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 11.5 GB. * Witness Printer took 71.91 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [tmp={0:0}] [L29] Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L16] Char *p; [L18] p = pathbuf VAL [tmp={2:4}] [L18] COND TRUE p <= pathlim [L4] COND FALSE !(!(cond)) VAL [tmp={2:4}] [L21] *p = 1 VAL [tmp={2:4}] [L18] p++ VAL [tmp={2:4}] [L18] COND TRUE p <= pathlim [L4] COND FALSE !(!(cond)) VAL [tmp={2:4}] [L21] *p = 1 VAL [tmp={2:4}] [L18] p++ VAL [tmp={2:4}] [L18] COND TRUE p <= pathlim [L4] COND TRUE !(cond) VAL [tmp={2:4}] [L5] __VERIFIER_error() VAL [tmp={2:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 34 SDslu, 24 SDs, 0 SdLazy, 30 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 860 SizeOfPredicates, 14 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...