./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s22iff.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/s22iff.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 b39b101c563655209f71a34308c9d664d667eb3e ...................................................................................................................................................................................................................................................................................................................................................................................... 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 22:31:41,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:31:41,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:31:41,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:31:41,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:31:41,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:31:41,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:31:41,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:31:41,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:31:41,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:31:41,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:31:41,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:31:41,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:31:41,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:31:41,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:31:41,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:31:41,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:31:41,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:31:41,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:31:41,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:31:41,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:31:41,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:31:41,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:31:41,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:31:41,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:31:41,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:31:41,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:31:41,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:31:41,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:31:41,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:31:41,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:31:41,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:31:41,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:31:41,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:31:41,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:31:41,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:31:41,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:31:41,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:31:41,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:31:41,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:31:41,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:31:41,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:31:41,338 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:31:41,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:31:41,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:31:41,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:31:41,340 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:31:41,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:31:41,341 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:31:41,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:31:41,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:31:41,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:31:41,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:31:41,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:31:41,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:31:41,343 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:31:41,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:31:41,344 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:31:41,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:31:41,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:31:41,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:31:41,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:31:41,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:31:41,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:31:41,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:31:41,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:31:41,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:31:41,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:31:41,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:31:41,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:31:41,347 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 -> b39b101c563655209f71a34308c9d664d667eb3e [2019-11-27 22:31:41,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:31:41,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:31:41,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:31:41,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:31:41,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:31:41,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s22iff.c [2019-11-27 22:31:41,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf99cb5c3/a44c8bd7234b4a64bd174292195692bb/FLAGd13d55a9d [2019-11-27 22:31:42,243 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:31:42,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s22iff.c [2019-11-27 22:31:42,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf99cb5c3/a44c8bd7234b4a64bd174292195692bb/FLAGd13d55a9d [2019-11-27 22:31:42,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf99cb5c3/a44c8bd7234b4a64bd174292195692bb [2019-11-27 22:31:42,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:31:42,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:31:42,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:31:42,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:31:42,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:31:42,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:31:42" (1/1) ... [2019-11-27 22:31:42,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730116ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:42, skipping insertion in model container [2019-11-27 22:31:42,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:31:42" (1/1) ... [2019-11-27 22:31:42,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:31:42,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:31:42,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:31:42,913 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:31:42,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:31:43,011 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:31:43,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43 WrapperNode [2019-11-27 22:31:43,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:31:43,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:31:43,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:31:43,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:31:43,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:31:43,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:31:43,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:31:43,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:31:43,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (1/1) ... [2019-11-27 22:31:43,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:31:43,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:31:43,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:31:43,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:31:43,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (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 22:31:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:31:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:31:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:31:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:31:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:31:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:31:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:31:43,427 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:31:43,427 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-27 22:31:43,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:43 BoogieIcfgContainer [2019-11-27 22:31:43,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:31:43,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:31:43,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:31:43,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:31:43,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:31:42" (1/3) ... [2019-11-27 22:31:43,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c39f10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:31:43, skipping insertion in model container [2019-11-27 22:31:43,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:31:43" (2/3) ... [2019-11-27 22:31:43,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c39f10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:31:43, skipping insertion in model container [2019-11-27 22:31:43,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:43" (3/3) ... [2019-11-27 22:31:43,437 INFO L109 eAbstractionObserver]: Analyzing ICFG s22iff.c [2019-11-27 22:31:43,446 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:31:43,452 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:31:43,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:31:43,481 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:31:43,481 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:31:43,482 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:31:43,482 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:31:43,482 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:31:43,482 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:31:43,482 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:31:43,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:31:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-27 22:31:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:31:43,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:43,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:43,502 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1306747820, now seen corresponding path program 1 times [2019-11-27 22:31:43,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:43,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881538630] [2019-11-27 22:31:43,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:43,646 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 22:31:43,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881538630] [2019-11-27 22:31:43,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:43,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:31:43,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769112763] [2019-11-27 22:31:43,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:31:43,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:43,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:31:43,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:31:43,665 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-27 22:31:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:43,680 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-11-27 22:31:43,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:31:43,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-27 22:31:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:43,690 INFO L225 Difference]: With dead ends: 37 [2019-11-27 22:31:43,690 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 22:31:43,693 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 22:31:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 22:31:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-27 22:31:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 22:31:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-27 22:31:43,723 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-11-27 22:31:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:43,724 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-27 22:31:43,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:31:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-27 22:31:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:31:43,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:43,725 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:43,725 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:43,726 INFO L82 PathProgramCache]: Analyzing trace with hash -875427960, now seen corresponding path program 1 times [2019-11-27 22:31:43,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:43,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746932119] [2019-11-27 22:31:43,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:43,801 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 22:31:43,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746932119] [2019-11-27 22:31:43,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:43,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:31:43,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442778525] [2019-11-27 22:31:43,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:31:43,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:43,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:31:43,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:31:43,806 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 3 states. [2019-11-27 22:31:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:43,888 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-27 22:31:43,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:31:43,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-27 22:31:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:43,890 INFO L225 Difference]: With dead ends: 31 [2019-11-27 22:31:43,890 INFO L226 Difference]: Without dead ends: 19 [2019-11-27 22:31:43,891 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 22:31:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-27 22:31:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-27 22:31:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 22:31:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-27 22:31:43,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2019-11-27 22:31:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:43,896 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-27 22:31:43,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:31:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-27 22:31:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-27 22:31:43,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:43,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:31:43,898 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash -100045206, now seen corresponding path program 1 times [2019-11-27 22:31:43,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:43,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334800260] [2019-11-27 22:31:43,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:31:43,961 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 22:31:43,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334800260] [2019-11-27 22:31:43,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:31:43,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:31:43,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641568308] [2019-11-27 22:31:43,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:31:43,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:31:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:31:43,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:31:43,965 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 4 states. [2019-11-27 22:31:44,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:31:44,068 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2019-11-27 22:31:44,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:31:44,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-27 22:31:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:31:44,069 INFO L225 Difference]: With dead ends: 33 [2019-11-27 22:31:44,070 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 22:31:44,070 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 22:31:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 22:31:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2019-11-27 22:31:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-27 22:31:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-27 22:31:44,076 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-27 22:31:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:31:44,076 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-27 22:31:44,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:31:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-27 22:31:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 22:31:44,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:31:44,078 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 22:31:44,078 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:31:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:31:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -682929213, now seen corresponding path program 1 times [2019-11-27 22:31:44,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:31:44,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206668302] [2019-11-27 22:31:44,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:31:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:31:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:31:44,236 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:31:44,236 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:31:44,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:31:44 BoogieIcfgContainer [2019-11-27 22:31:44,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:31:44,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:31:44,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:31:44,272 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:31:44,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:31:43" (3/4) ... [2019-11-27 22:31:44,275 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:31:44,334 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:31:44,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:31:44,337 INFO L168 Benchmark]: Toolchain (without parser) took 1685.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:44,338 INFO L168 Benchmark]: CDTParser took 0.54 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 22:31:44,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:44,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.07 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 22:31:44,340 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 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 22:31:44,340 INFO L168 Benchmark]: RCFGBuilder took 348.26 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:44,341 INFO L168 Benchmark]: TraceAbstraction took 841.32 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: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:31:44,341 INFO L168 Benchmark]: Witness Printer took 62.92 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 22:31:44,345 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 361.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.07 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 28.15 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 348.26 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 841.32 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: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. * Witness Printer took 62.92 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. * 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