./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 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/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 0.1.25-f470102 [2019-11-28 15:36:08,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:36:08,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:36:08,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:36:08,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:36:08,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:36:08,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:36:08,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:36:08,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:36:08,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:36:08,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:36:08,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:36:08,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:36:08,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:36:08,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:36:08,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:36:08,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:36:08,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:36:08,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:36:08,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:36:08,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:36:08,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:36:08,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:36:08,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:36:08,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:36:08,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:36:08,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:36:08,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:36:08,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:36:08,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:36:08,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:36:08,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:36:08,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:36:08,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:36:08,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:36:08,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:36:08,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:36:08,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:36:08,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:36:08,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:36:08,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:36:08,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:36:08,709 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:36:08,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:36:08,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:36:08,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:36:08,712 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:36:08,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:36:08,712 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:36:08,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:36:08,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:36:08,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:36:08,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:36:08,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:36:08,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:36:08,714 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:36:08,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:36:08,715 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:36:08,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:36:08,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:36:08,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:36:08,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:36:08,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:36:08,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:36:08,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:36:08,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:36:08,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:36:08,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:36:08,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:36:08,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:36:08,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:36:08,719 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 [2019-11-28 15:36:09,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:36:09,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:36:09,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:36:09,025 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:36:09,027 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:36:09,028 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s22iff.c [2019-11-28 15:36:09,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1669e03/7e5b0ce9ee8c4e638cf8f971286c2b73/FLAGa9362a0c4 [2019-11-28 15:36:09,578 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:36:09,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s22iff.c [2019-11-28 15:36:09,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1669e03/7e5b0ce9ee8c4e638cf8f971286c2b73/FLAGa9362a0c4 [2019-11-28 15:36:09,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1669e03/7e5b0ce9ee8c4e638cf8f971286c2b73 [2019-11-28 15:36:09,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:36:09,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:36:09,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:09,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:36:09,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:36:09,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:09" (1/1) ... [2019-11-28 15:36:09,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b82df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:09, skipping insertion in model container [2019-11-28 15:36:09,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:09" (1/1) ... [2019-11-28 15:36:09,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:36:10,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:36:10,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:10,216 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:36:10,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:10,309 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:36:10,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10 WrapperNode [2019-11-28 15:36:10,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:10,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:10,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:36:10,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:36:10,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:10,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:36:10,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:36:10,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:36:10,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (1/1) ... [2019-11-28 15:36:10,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:36:10,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:36:10,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:36:10,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:36:10,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (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 15:36:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:36:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:36:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:36:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:36:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:36:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:36:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:36:10,753 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:36:10,753 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 15:36:10,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:10 BoogieIcfgContainer [2019-11-28 15:36:10,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:36:10,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:36:10,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:36:10,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:36:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:36:09" (1/3) ... [2019-11-28 15:36:10,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae06f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:10, skipping insertion in model container [2019-11-28 15:36:10,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:10" (2/3) ... [2019-11-28 15:36:10,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae06f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:10, skipping insertion in model container [2019-11-28 15:36:10,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:10" (3/3) ... [2019-11-28 15:36:10,763 INFO L109 eAbstractionObserver]: Analyzing ICFG s22iff.c [2019-11-28 15:36:10,772 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:36:10,778 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:36:10,789 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:36:10,813 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:36:10,813 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:36:10,813 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:36:10,813 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:36:10,814 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:36:10,814 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:36:10,814 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:36:10,814 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:36:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-28 15:36:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:36:10,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:10,837 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:10,837 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1306747820, now seen corresponding path program 1 times [2019-11-28 15:36:10,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:10,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859429043] [2019-11-28 15:36:10,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:10,996 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 15:36:10,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859429043] [2019-11-28 15:36:10,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:10,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:36:10,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033640691] [2019-11-28 15:36:11,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:36:11,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:36:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:36:11,017 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-28 15:36:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:11,033 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-11-28 15:36:11,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:36:11,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 15:36:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:11,043 INFO L225 Difference]: With dead ends: 37 [2019-11-28 15:36:11,044 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 15:36:11,047 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 15:36:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 15:36:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 15:36:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 15:36:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-28 15:36:11,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-11-28 15:36:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:11,084 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-28 15:36:11,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:36:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-28 15:36:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:36:11,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:11,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:11,086 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash -875427960, now seen corresponding path program 1 times [2019-11-28 15:36:11,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:11,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858500804] [2019-11-28 15:36:11,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:11,168 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 15:36:11,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858500804] [2019-11-28 15:36:11,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:11,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:36:11,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59452986] [2019-11-28 15:36:11,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:36:11,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:36:11,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:36:11,175 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 3 states. [2019-11-28 15:36:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:11,251 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-28 15:36:11,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:36:11,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-28 15:36:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:11,252 INFO L225 Difference]: With dead ends: 31 [2019-11-28 15:36:11,252 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 15:36:11,254 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 15:36:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 15:36:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-28 15:36:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 15:36:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 15:36:11,261 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2019-11-28 15:36:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:11,261 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 15:36:11,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:36:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-28 15:36:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 15:36:11,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:11,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:11,263 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:11,263 INFO L82 PathProgramCache]: Analyzing trace with hash -100045206, now seen corresponding path program 1 times [2019-11-28 15:36:11,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:11,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004557381] [2019-11-28 15:36:11,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:11,346 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 15:36:11,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004557381] [2019-11-28 15:36:11,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:11,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:36:11,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437894622] [2019-11-28 15:36:11,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:36:11,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:36:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:36:11,348 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 4 states. [2019-11-28 15:36:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:11,426 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2019-11-28 15:36:11,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:36:11,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-28 15:36:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:11,427 INFO L225 Difference]: With dead ends: 33 [2019-11-28 15:36:11,428 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 15:36:11,428 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 15:36:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 15:36:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2019-11-28 15:36:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 15:36:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 15:36:11,434 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-28 15:36:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:11,434 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 15:36:11,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:36:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 15:36:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 15:36:11,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:11,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:11,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash -682929213, now seen corresponding path program 1 times [2019-11-28 15:36:11,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:11,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878882793] [2019-11-28 15:36:11,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:11,580 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:36:11,581 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:36:11,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:36:11 BoogieIcfgContainer [2019-11-28 15:36:11,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:36:11,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:36:11,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:36:11,622 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:36:11,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:10" (3/4) ... [2019-11-28 15:36:11,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:36:11,683 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:36:11,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:36:11,686 INFO L168 Benchmark]: Toolchain (without parser) took 1720.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -107.0 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,686 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:36:11,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,689 INFO L168 Benchmark]: Boogie Preprocessor took 27.81 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 15:36:11,689 INFO L168 Benchmark]: RCFGBuilder took 364.88 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,690 INFO L168 Benchmark]: TraceAbstraction took 865.00 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,691 INFO L168 Benchmark]: Witness Printer took 62.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:11,695 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.81 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 364.88 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 865.00 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 62.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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