./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s12iff.c --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/array-fpi/s12iff.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 be2a88bc5308a06209a097ae96db628ecce7cca6 ...................................................................................................................................................................................................................................................................................................................................................................................... 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 [2019-11-27 22:31:28,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:31:28,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:31:28,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:31:28,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:31:28,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:31:28,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:31:28,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:31:28,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:31:28,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:31:28,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:31:28,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:31:28,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:31:28,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:31:28,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:31:28,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:31:28,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:31:28,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:31:28,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:31:28,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:31:28,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:31:28,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:31:28,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:31:28,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:31:28,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:31:28,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:31:28,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:31:28,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:31:28,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:31:28,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:31:28,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:31:28,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:31:28,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:31:28,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:31:28,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:31:28,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:31:28,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:31:28,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:31:28,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:31:28,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:31:28,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:31:28,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:31:28,194 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:31:28,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:31:28,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:31:28,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:31:28,196 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:31:28,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:31:28,197 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:31:28,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:31:28,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:31:28,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:31:28,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:31:28,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:31:28,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:31:28,199 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:31:28,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:31:28,199 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:31:28,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:31:28,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:31:28,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:31:28,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:31:28,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:31:28,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:31:28,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:31:28,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:31:28,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:31:28,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:31:28,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:31:28,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:31:28,203 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 -> be2a88bc5308a06209a097ae96db628ecce7cca6 [2019-11-27 22:31:28,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:31:28,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:31:28,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:31:28,555 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:31:28,555 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:31:28,556 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s12iff.c [2019-11-27 22:31:28,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd96b88ff/b2abd3c17df04730b1df3d68b04cb4eb/FLAGd284d7672 [2019-11-27 22:31:29,081 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:31:29,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s12iff.c [2019-11-27 22:31:29,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd96b88ff/b2abd3c17df04730b1df3d68b04cb4eb/FLAGd284d7672 [2019-11-27 22:31:29,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd96b88ff/b2abd3c17df04730b1df3d68b04cb4eb [2019-11-27 22:31:29,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:31:29,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:31:29,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:31:29,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:31:29,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:31:29,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f061439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29, skipping insertion in model container [2019-11-27 22:31:29,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:31:29,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:31:29,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:31:29,738 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:31:29,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:31:29,850 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:31:29,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29 WrapperNode [2019-11-27 22:31:29,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:31:29,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:31:29,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:31:29,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:31:29,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:31:29,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:31:29,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:31:29,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:31:29,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (1/1) ... [2019-11-27 22:31:29,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:31:29,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:31:29,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:31:29,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:31:29,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (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 [2019-11-27 22:31:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:31:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:31:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:31:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:31:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:31:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:31:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:31:30,273 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:31:30,274 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-27 22:31:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:30 BoogieIcfgContainer [2019-11-27 22:31:30,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:31:30,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:31:30,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:31:30,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:31:30,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:31:29" (1/3) ... [2019-11-27 22:31:30,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5764be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:31:30, skipping insertion in model container [2019-11-27 22:31:30,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:29" (2/3) ... [2019-11-27 22:31:30,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5764be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:31:30, skipping insertion in model container [2019-11-27 22:31:30,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:30" (3/3) ... [2019-11-27 22:31:30,282 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2019-11-27 22:31:30,291 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:31:30,297 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:31:30,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:31:30,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:31:30,326 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:31:30,326 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:31:30,326 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:31:30,326 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:31:30,326 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:31:30,326 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:31:30,327 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:31:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-27 22:31:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:31:30,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:30,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:30,347 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:30,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1306747820, now seen corresponding path program 1 times [2019-11-27 22:31:30,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:30,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287982274] [2019-11-27 22:31:30,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:31:30,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287982274] [2019-11-27 22:31:30,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:30,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:31:30,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484807166] [2019-11-27 22:31:30,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:31:30,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:31:30,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:31:30,505 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-27 22:31:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:30,520 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-11-27 22:31:30,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:31:30,521 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-27 22:31:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:30,529 INFO L225 Difference]: With dead ends: 37 [2019-11-27 22:31:30,529 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 22:31:30,532 INFO L630 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 [2019-11-27 22:31:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 22:31:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-27 22:31:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 22:31:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-27 22:31:30,561 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-11-27 22:31:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:30,562 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-27 22:31:30,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:31:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-27 22:31:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:31:30,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:30,563 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:30,563 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:30,564 INFO L82 PathProgramCache]: Analyzing trace with hash -875427960, now seen corresponding path program 1 times [2019-11-27 22:31:30,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:30,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158695036] [2019-11-27 22:31:30,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:31:30,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158695036] [2019-11-27 22:31:30,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:30,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:31:30,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703048815] [2019-11-27 22:31:30,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:31:30,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:31:30,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:31:30,645 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 3 states. [2019-11-27 22:31:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:30,729 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-27 22:31:30,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:31:30,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-27 22:31:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:30,731 INFO L225 Difference]: With dead ends: 31 [2019-11-27 22:31:30,731 INFO L226 Difference]: Without dead ends: 19 [2019-11-27 22:31:30,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:31:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-27 22:31:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-27 22:31:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 22:31:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-27 22:31:30,738 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2019-11-27 22:31:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:30,738 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-27 22:31:30,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:31:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-27 22:31:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-27 22:31:30,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:30,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:30,740 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:30,741 INFO L82 PathProgramCache]: Analyzing trace with hash -100045206, now seen corresponding path program 1 times [2019-11-27 22:31:30,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:30,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028948066] [2019-11-27 22:31:30,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 22:31:30,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028948066] [2019-11-27 22:31:30,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:30,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:31:30,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290714815] [2019-11-27 22:31:30,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:31:30,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:30,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:31:30,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:31:30,820 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 4 states. [2019-11-27 22:31:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:30,923 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2019-11-27 22:31:30,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:31:30,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-27 22:31:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:30,925 INFO L225 Difference]: With dead ends: 33 [2019-11-27 22:31:30,925 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 22:31:30,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:31:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 22:31:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2019-11-27 22:31:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-27 22:31:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-27 22:31:30,942 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-27 22:31:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:30,942 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-27 22:31:30,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:31:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-27 22:31:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 22:31:30,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:30,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:30,944 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash -682929213, now seen corresponding path program 1 times [2019-11-27 22:31:30,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:30,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903725989] [2019-11-27 22:31:30,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:31:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:31:31,056 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:31:31,056 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:31:31,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:31:31 BoogieIcfgContainer [2019-11-27 22:31:31,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:31:31,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:31:31,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:31:31,091 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:31:31,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:30" (3/4) ... [2019-11-27 22:31:31,094 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:31:31,148 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:31:31,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:31:31,151 INFO L168 Benchmark]: Toolchain (without parser) took 1643.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -98.2 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,152 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-27 22:31:31,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.46 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,154 INFO L168 Benchmark]: Boogie Preprocessor took 25.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:31:31,155 INFO L168 Benchmark]: RCFGBuilder took 350.97 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,155 INFO L168 Benchmark]: TraceAbstraction took 814.26 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,156 INFO L168 Benchmark]: Witness Printer took 58.29 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:31,160 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 342.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.46 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 350.97 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 814.26 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.29 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 1 [L27] i=0 VAL [N=1] [L27] COND TRUE i