./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 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/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 0.1.24-30f4e4a [2019-11-27 22:32:02,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:32:02,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:32:02,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:32:02,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:32:02,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:32:02,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:32:02,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:32:02,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:32:02,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:32:02,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:32:02,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:32:02,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:32:02,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:32:02,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:32:02,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:32:02,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:32:02,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:32:02,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:32:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:32:02,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:32:02,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:32:02,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:32:02,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:32:02,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:32:02,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:32:02,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:32:02,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:32:02,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:32:02,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:32:02,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:32:02,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:32:02,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:32:02,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:32:02,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:32:02,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:32:02,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:32:02,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:32:02,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:32:02,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:32:02,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:32:02,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:32:02,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:32:02,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:32:02,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:32:02,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:32:02,786 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:32:02,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:32:02,786 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:32:02,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:32:02,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:32:02,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:32:02,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:32:02,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:32:02,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:32:02,788 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:32:02,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:32:02,789 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:32:02,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:32:02,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:32:02,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:32:02,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:32:02,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:32:02,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:32:02,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:32:02,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:32:02,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:32:02,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:32:02,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:32:02,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:32:02,793 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 [2019-11-27 22:32:03,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:32:03,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:32:03,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:32:03,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:32:03,158 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:32:03,160 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s3liff.c [2019-11-27 22:32:03,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312df227b/8de611df208c49609e0c0962c5e27ac9/FLAG4511ed3b7 [2019-11-27 22:32:03,689 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:32:03,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3liff.c [2019-11-27 22:32:03,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312df227b/8de611df208c49609e0c0962c5e27ac9/FLAG4511ed3b7 [2019-11-27 22:32:04,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312df227b/8de611df208c49609e0c0962c5e27ac9 [2019-11-27 22:32:04,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:32:04,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:32:04,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:32:04,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:32:04,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:32:04,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b52569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04, skipping insertion in model container [2019-11-27 22:32:04,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:32:04,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:32:04,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:32:04,346 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:32:04,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:32:04,387 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:32:04,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04 WrapperNode [2019-11-27 22:32:04,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:32:04,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:32:04,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:32:04,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:32:04,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:32:04,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:32:04,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:32:04,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:32:04,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (1/1) ... [2019-11-27 22:32:04,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:32:04,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:32:04,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:32:04,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:32:04,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (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 22:32:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:32:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:32:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:32:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:32:04,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:32:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:32:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:32:04,811 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:32:04,811 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-27 22:32:04,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:04 BoogieIcfgContainer [2019-11-27 22:32:04,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:32:04,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:32:04,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:32:04,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:32:04,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:32:04" (1/3) ... [2019-11-27 22:32:04,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b60cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:32:04, skipping insertion in model container [2019-11-27 22:32:04,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:32:04" (2/3) ... [2019-11-27 22:32:04,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b60cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:32:04, skipping insertion in model container [2019-11-27 22:32:04,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:04" (3/3) ... [2019-11-27 22:32:04,828 INFO L109 eAbstractionObserver]: Analyzing ICFG s3liff.c [2019-11-27 22:32:04,843 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:32:04,850 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:32:04,866 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:32:04,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:32:04,895 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:32:04,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:32:04,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:32:04,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:32:04,896 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:32:04,896 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:32:04,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:32:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-27 22:32:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:32:04,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:04,921 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:04,921 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-27 22:32:04,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:04,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779902142] [2019-11-27 22:32:04,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:05,067 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 22:32:05,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779902142] [2019-11-27 22:32:05,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:05,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:32:05,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696944495] [2019-11-27 22:32:05,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:32:05,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:05,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:32:05,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:32:05,089 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-27 22:32:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:05,104 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-27 22:32:05,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:32:05,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-27 22:32:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:05,113 INFO L225 Difference]: With dead ends: 35 [2019-11-27 22:32:05,114 INFO L226 Difference]: Without dead ends: 16 [2019-11-27 22:32:05,117 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 22:32:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-27 22:32:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-27 22:32:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:32:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-27 22:32:05,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-27 22:32:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:05,147 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-27 22:32:05,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:32:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-27 22:32:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 22:32:05,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:05,148 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:05,149 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-27 22:32:05,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:05,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479500277] [2019-11-27 22:32:05,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:05,233 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 22:32:05,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479500277] [2019-11-27 22:32:05,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:05,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:32:05,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291437549] [2019-11-27 22:32:05,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:32:05,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:05,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:32:05,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:32:05,238 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-27 22:32:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:05,302 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-27 22:32:05,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:32:05,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-27 22:32:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:05,303 INFO L225 Difference]: With dead ends: 29 [2019-11-27 22:32:05,303 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:32:05,304 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 22:32:05,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:32:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-27 22:32:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 22:32:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-27 22:32:05,309 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-27 22:32:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:05,310 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-27 22:32:05,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:32:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-27 22:32:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-27 22:32:05,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:05,311 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:05,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:05,312 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-27 22:32:05,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:05,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060582599] [2019-11-27 22:32:05,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:32:05,382 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 22:32:05,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060582599] [2019-11-27 22:32:05,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:32:05,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:32:05,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965776076] [2019-11-27 22:32:05,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:32:05,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:32:05,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:32:05,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:32:05,387 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-27 22:32:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:32:05,455 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-27 22:32:05,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:32:05,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-27 22:32:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:32:05,456 INFO L225 Difference]: With dead ends: 30 [2019-11-27 22:32:05,456 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 22:32:05,457 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 22:32:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 22:32:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-11-27 22:32:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-27 22:32:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-27 22:32:05,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-27 22:32:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:32:05,462 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-27 22:32:05,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:32:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-27 22:32:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 22:32:05,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:32:05,464 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:32:05,464 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:32:05,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:32:05,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-27 22:32:05,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:32:05,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847877231] [2019-11-27 22:32:05,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:32:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:32:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:32:05,572 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:32:05,572 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:32:05,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:32:05 BoogieIcfgContainer [2019-11-27 22:32:05,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:32:05,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:32:05,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:32:05,617 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:32:05,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:32:04" (3/4) ... [2019-11-27 22:32:05,619 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:32:05,680 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:32:05,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:32:05,682 INFO L168 Benchmark]: Toolchain (without parser) took 1567.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -101.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:05,683 INFO L168 Benchmark]: CDTParser took 0.38 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 22:32:05,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:05,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:05,686 INFO L168 Benchmark]: Boogie Preprocessor took 34.05 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 22:32:05,686 INFO L168 Benchmark]: RCFGBuilder took 288.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:05,687 INFO L168 Benchmark]: TraceAbstraction took 799.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2019-11-27 22:32:05,688 INFO L168 Benchmark]: Witness Printer took 63.69 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 22:32:05,692 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 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 271.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 102.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.05 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 288.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 799.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. * Witness Printer took 63.69 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] = N [L27] i=0 VAL [N=1] [L27] COND TRUE i