./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s3liff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/s3liff.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 aafa53e8bc448dd2e5457504125331636c182449 .................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 15:36:31,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:36:31,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:36:31,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:36:31,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:36:31,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:36:31,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:36:31,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:36:31,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:36:31,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:36:31,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:36:31,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:36:31,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:36:31,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:36:31,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:36:31,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:36:31,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:36:31,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:36:31,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:36:31,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:36:31,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:36:31,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:36:31,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:36:31,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:36:31,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:36:31,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:36:31,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:36:31,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:36:31,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:36:31,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:36:31,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:36:31,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:36:31,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:36:31,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:36:31,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:36:31,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:36:31,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:36:31,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:36:31,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:36:31,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:36:31,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:36:31,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:36:31,516 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:36:31,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:36:31,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:36:31,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:36:31,520 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:36:31,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:36:31,521 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:36:31,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:36:31,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:36:31,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:36:31,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:36:31,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:36:31,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:36:31,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:36:31,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:36:31,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:36:31,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:36:31,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:36:31,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:36:31,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:36:31,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:36:31,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:36:31,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:36:31,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:36:31,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:36:31,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:36:31,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:36:31,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:36:31,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:36:31,528 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 -> aafa53e8bc448dd2e5457504125331636c182449 [2019-11-28 15:36:31,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:36:31,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:36:31,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:36:31,845 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:36:31,845 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:36:31,846 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s3liff.c [2019-11-28 15:36:31,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fb2f76f/11a12e6a9a034bf0b4041391308d59b8/FLAG64d926dcc [2019-11-28 15:36:32,307 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:36:32,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3liff.c [2019-11-28 15:36:32,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fb2f76f/11a12e6a9a034bf0b4041391308d59b8/FLAG64d926dcc [2019-11-28 15:36:32,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fb2f76f/11a12e6a9a034bf0b4041391308d59b8 [2019-11-28 15:36:32,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:36:32,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:36:32,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:32,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:36:32,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:36:32,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:32" (1/1) ... [2019-11-28 15:36:32,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c1ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:32, skipping insertion in model container [2019-11-28 15:36:32,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:32" (1/1) ... [2019-11-28 15:36:32,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:36:32,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:36:32,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:32,981 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:36:33,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:33,014 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:36:33,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33 WrapperNode [2019-11-28 15:36:33,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:33,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:33,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:36:33,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:36:33,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:33,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:36:33,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:36:33,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:36:33,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (1/1) ... [2019-11-28 15:36:33,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:36:33,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:36:33,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:36:33,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:36:33,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (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 15:36:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:36:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:36:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:36:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:36:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:36:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:36:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:36:33,426 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:36:33,426 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 15:36:33,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:33 BoogieIcfgContainer [2019-11-28 15:36:33,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:36:33,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:36:33,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:36:33,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:36:33,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:36:32" (1/3) ... [2019-11-28 15:36:33,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236574d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:33, skipping insertion in model container [2019-11-28 15:36:33,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:33" (2/3) ... [2019-11-28 15:36:33,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236574d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:33, skipping insertion in model container [2019-11-28 15:36:33,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:33" (3/3) ... [2019-11-28 15:36:33,437 INFO L109 eAbstractionObserver]: Analyzing ICFG s3liff.c [2019-11-28 15:36:33,451 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:36:33,459 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:36:33,472 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:36:33,499 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:36:33,500 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:36:33,500 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:36:33,500 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:36:33,501 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:36:33,501 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:36:33,501 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:36:33,501 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:36:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-28 15:36:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:36:33,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:33,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:33,526 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:33,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-28 15:36:33,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:33,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447478176] [2019-11-28 15:36:33,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:33,669 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 15:36:33,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447478176] [2019-11-28 15:36:33,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:33,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:36:33,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45414785] [2019-11-28 15:36:33,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:36:33,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:33,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:36:33,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:36:33,690 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-28 15:36:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:33,709 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-28 15:36:33,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:36:33,710 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 15:36:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:33,720 INFO L225 Difference]: With dead ends: 35 [2019-11-28 15:36:33,720 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 15:36:33,723 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 [2019-11-28 15:36:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 15:36:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 15:36:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 15:36:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-28 15:36:33,753 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-28 15:36:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:33,754 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 15:36:33,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:36:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-28 15:36:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:36:33,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:33,756 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:33,756 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-28 15:36:33,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:33,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567193791] [2019-11-28 15:36:33,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:33,837 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 15:36:33,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567193791] [2019-11-28 15:36:33,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:33,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:36:33,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14573535] [2019-11-28 15:36:33,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:36:33,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:33,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:36:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:36:33,841 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-28 15:36:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:33,930 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-28 15:36:33,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:36:33,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-28 15:36:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:33,932 INFO L225 Difference]: With dead ends: 29 [2019-11-28 15:36:33,932 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 15:36:33,934 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 [2019-11-28 15:36:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 15:36:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-28 15:36:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 15:36:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-28 15:36:33,940 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-28 15:36:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:33,941 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 15:36:33,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:36:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-28 15:36:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 15:36:33,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:33,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:33,942 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:33,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-28 15:36:33,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:33,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669893656] [2019-11-28 15:36:33,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 15:36:34,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669893656] [2019-11-28 15:36:34,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:34,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:36:34,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260045283] [2019-11-28 15:36:34,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:36:34,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:36:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:36:34,027 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-28 15:36:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:34,083 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-28 15:36:34,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:36:34,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-28 15:36:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:34,085 INFO L225 Difference]: With dead ends: 30 [2019-11-28 15:36:34,085 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 15:36:34,085 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 [2019-11-28 15:36:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 15:36:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-11-28 15:36:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 15:36:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-28 15:36:34,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-28 15:36:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:34,092 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-28 15:36:34,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:36:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-28 15:36:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 15:36:34,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:34,093 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:34,094 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-28 15:36:34,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:34,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090598043] [2019-11-28 15:36:34,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:34,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:36:34,204 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:36:34,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:36:34 BoogieIcfgContainer [2019-11-28 15:36:34,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:36:34,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:36:34,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:36:34,241 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:36:34,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:33" (3/4) ... [2019-11-28 15:36:34,244 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:36:34,298 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:36:34,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:36:34,301 INFO L168 Benchmark]: Toolchain (without parser) took 1570.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -89.9 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:34,302 INFO L168 Benchmark]: CDTParser took 0.27 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 15:36:34,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:34,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:34,304 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 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 15:36:34,305 INFO L168 Benchmark]: RCFGBuilder took 294.73 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:34,306 INFO L168 Benchmark]: TraceAbstraction took 810.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:34,307 INFO L168 Benchmark]: Witness Printer took 58.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:36:34,310 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 284.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.83 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 294.73 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 810.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 58.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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] = N [L27] i=0 VAL [N=1] [L27] COND TRUE i