./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condnf.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/condnf.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 f3b39298cedfd910357326131ebb504a4d33fa54 ........................................................................................................................................................................................................................................................................................................................................................................ 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 15:33:33,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:33:33,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:33:33,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:33:33,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:33:33,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:33:33,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:33:33,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:33:33,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:33:33,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:33:33,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:33:33,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:33:33,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:33:33,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:33:33,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:33:33,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:33:33,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:33:33,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:33:33,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:33:33,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:33:33,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:33:33,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:33:33,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:33:33,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:33:33,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:33:33,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:33:33,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:33:33,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:33:33,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:33:33,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:33:33,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:33:33,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:33:33,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:33:33,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:33:33,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:33:33,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:33:33,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:33:33,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:33:33,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:33:33,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:33:33,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:33:33,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:33:33,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:33:33,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:33:33,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:33:33,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:33:33,449 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:33:33,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:33:33,450 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:33:33,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:33:33,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:33:33,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:33:33,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:33:33,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:33:33,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:33:33,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:33:33,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:33:33,452 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:33:33,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:33:33,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:33:33,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:33:33,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:33:33,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:33:33,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:33:33,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:33:33,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:33:33,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:33:33,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:33:33,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:33:33,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:33:33,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:33:33,457 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 -> f3b39298cedfd910357326131ebb504a4d33fa54 [2019-11-28 15:33:33,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:33:33,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:33:33,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:33:33,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:33:33,796 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:33:33,797 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condnf.c [2019-11-28 15:33:33,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf6e8ad0/da98ab56f76547129c01326cfb91cd8e/FLAG1bb0fa414 [2019-11-28 15:33:34,378 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:33:34,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condnf.c [2019-11-28 15:33:34,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf6e8ad0/da98ab56f76547129c01326cfb91cd8e/FLAG1bb0fa414 [2019-11-28 15:33:34,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf6e8ad0/da98ab56f76547129c01326cfb91cd8e [2019-11-28 15:33:34,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:33:34,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:33:34,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:34,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:33:34,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:33:34,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:34" (1/1) ... [2019-11-28 15:33:34,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7210572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:34, skipping insertion in model container [2019-11-28 15:33:34,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:34" (1/1) ... [2019-11-28 15:33:34,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:33:34,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:33:35,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:35,012 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:33:35,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:35,048 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:33:35,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35 WrapperNode [2019-11-28 15:33:35,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:35,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:35,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:33:35,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:33:35,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:35,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:33:35,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:33:35,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:33:35,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (1/1) ... [2019-11-28 15:33:35,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:33:35,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:33:35,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:33:35,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:33:35,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (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 15:33:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:33:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:33:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:33:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:33:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:33:35,460 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:33:35,461 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 15:33:35,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:35 BoogieIcfgContainer [2019-11-28 15:33:35,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:33:35,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:33:35,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:33:35,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:33:35,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:33:34" (1/3) ... [2019-11-28 15:33:35,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb005fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:35, skipping insertion in model container [2019-11-28 15:33:35,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:35" (2/3) ... [2019-11-28 15:33:35,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb005fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:35, skipping insertion in model container [2019-11-28 15:33:35,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:35" (3/3) ... [2019-11-28 15:33:35,473 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2019-11-28 15:33:35,485 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:33:35,498 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:33:35,518 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:33:35,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:33:35,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:33:35,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:33:35,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:33:35,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:33:35,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:33:35,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:33:35,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:33:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-28 15:33:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 15:33:35,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:35,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:35,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1481876406, now seen corresponding path program 1 times [2019-11-28 15:33:35,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:35,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010969661] [2019-11-28 15:33:35,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:35,713 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 15:33:35,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010969661] [2019-11-28 15:33:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:33:35,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271806783] [2019-11-28 15:33:35,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:33:35,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:35,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:33:35,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:33:35,733 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-28 15:33:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:35,749 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-28 15:33:35,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:33:35,751 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 15:33:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:35,760 INFO L225 Difference]: With dead ends: 35 [2019-11-28 15:33:35,761 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 15:33:35,764 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 15:33:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 15:33:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 15:33:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 15:33:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-28 15:33:35,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-11-28 15:33:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:35,793 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 15:33:35,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:33:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-28 15:33:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 15:33:35,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:35,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:35,795 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1772877369, now seen corresponding path program 1 times [2019-11-28 15:33:35,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:35,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450883586] [2019-11-28 15:33:35,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:35,868 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 15:33:35,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450883586] [2019-11-28 15:33:35,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:35,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:33:35,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957336041] [2019-11-28 15:33:35,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:33:35,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:33:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:33:35,872 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-28 15:33:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:35,943 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-28 15:33:35,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:33:35,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 15:33:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:35,944 INFO L225 Difference]: With dead ends: 29 [2019-11-28 15:33:35,944 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 15:33:35,945 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 15:33:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 15:33:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-28 15:33:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 15:33:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-28 15:33:35,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2019-11-28 15:33:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:35,951 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 15:33:35,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:33:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-28 15:33:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 15:33:35,952 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:35,952 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:35,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:35,953 INFO L82 PathProgramCache]: Analyzing trace with hash 828058391, now seen corresponding path program 1 times [2019-11-28 15:33:35,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:35,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392317900] [2019-11-28 15:33:35,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:36,016 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 15:33:36,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392317900] [2019-11-28 15:33:36,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:36,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:33:36,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723417651] [2019-11-28 15:33:36,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:33:36,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:36,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:33:36,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:33:36,023 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-28 15:33:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:36,084 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-28 15:33:36,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:33:36,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 15:33:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:36,086 INFO L225 Difference]: With dead ends: 34 [2019-11-28 15:33:36,086 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 15:33:36,086 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 15:33:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 15:33:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2019-11-28 15:33:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 15:33:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-28 15:33:36,092 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-28 15:33:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:36,093 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-28 15:33:36,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:33:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-28 15:33:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 15:33:36,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:36,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:36,095 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1290117262, now seen corresponding path program 1 times [2019-11-28 15:33:36,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:36,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954324455] [2019-11-28 15:33:36,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:36,231 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:33:36,232 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:33:36,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:33:36 BoogieIcfgContainer [2019-11-28 15:33:36,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:33:36,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:33:36,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:33:36,266 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:33:36,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:35" (3/4) ... [2019-11-28 15:33:36,269 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:33:36,323 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:33:36,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:33:36,326 INFO L168 Benchmark]: Toolchain (without parser) took 1582.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -105.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:36,326 INFO L168 Benchmark]: CDTParser took 0.93 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 15:33:36,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.91 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. [2019-11-28 15:33:36,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:36,329 INFO L168 Benchmark]: Boogie Preprocessor took 24.09 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 15:33:36,330 INFO L168 Benchmark]: RCFGBuilder took 294.08 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. [2019-11-28 15:33:36,331 INFO L168 Benchmark]: TraceAbstraction took 800.76 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:36,331 INFO L168 Benchmark]: Witness Printer took 57.84 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 15:33:36,336 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 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 304.91 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 95.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.09 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. * RCFGBuilder took 294.08 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 800.76 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. * Witness Printer took 57.84 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] int *a = malloc(sizeof(int)*N); [L25] i=0 VAL [N=1] [L25] COND TRUE i N [L33] EXPR a[i] [L33] a[i] = a[i] [L30] i++ VAL [N=1] [L30] COND FALSE !(i