./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s5iff.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/s5iff.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 5d662f2c632ccbb4b04c793697535912f2bd9ed9 ........................................................................................................................................................................................................................................................................................................................................................................... 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 15:36:47,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:36:47,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:36:47,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:36:47,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:36:47,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:36:47,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:36:47,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:36:47,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:36:47,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:36:47,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:36:47,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:36:47,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:36:47,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:36:47,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:36:47,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:36:47,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:36:47,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:36:47,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:36:47,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:36:47,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:36:47,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:36:47,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:36:47,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:36:47,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:36:47,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:36:47,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:36:47,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:36:47,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:36:47,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:36:47,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:36:47,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:36:47,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:36:47,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:36:47,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:36:47,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:36:47,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:36:47,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:36:47,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:36:47,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:36:47,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:36:47,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:36:47,614 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:36:47,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:36:47,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:36:47,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:36:47,617 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:36:47,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:36:47,618 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:36:47,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:36:47,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:36:47,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:36:47,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:36:47,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:36:47,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:36:47,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:36:47,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:36:47,622 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:36:47,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:36:47,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:36:47,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:36:47,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:36:47,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:36:47,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:36:47,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:36:47,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:36:47,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:36:47,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:36:47,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:36:47,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:36:47,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:36:47,626 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 -> 5d662f2c632ccbb4b04c793697535912f2bd9ed9 [2019-11-28 15:36:47,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:36:47,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:36:47,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:36:47,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:36:47,961 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:36:47,962 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s5iff.c [2019-11-28 15:36:48,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6bb02ef/821136f45e6f4b4fb31430fc2798e75a/FLAG869c90059 [2019-11-28 15:36:48,504 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:36:48,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s5iff.c [2019-11-28 15:36:48,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6bb02ef/821136f45e6f4b4fb31430fc2798e75a/FLAG869c90059 [2019-11-28 15:36:48,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6bb02ef/821136f45e6f4b4fb31430fc2798e75a [2019-11-28 15:36:48,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:36:48,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:36:48,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:48,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:36:48,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:36:48,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:48" (1/1) ... [2019-11-28 15:36:48,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4287e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:48, skipping insertion in model container [2019-11-28 15:36:48,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:36:48" (1/1) ... [2019-11-28 15:36:48,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:36:48,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:36:49,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:49,242 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:36:49,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:36:49,281 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:36:49,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49 WrapperNode [2019-11-28 15:36:49,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:36:49,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:49,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:36:49,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:36:49,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:36:49,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:36:49,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:36:49,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:36:49,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (1/1) ... [2019-11-28 15:36:49,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:36:49,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:36:49,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:36:49,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:36:49,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (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 15:36:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:36:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:36:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:36:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:36:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:36:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:36:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:36:49,749 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:36:49,750 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 15:36:49,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:49 BoogieIcfgContainer [2019-11-28 15:36:49,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:36:49,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:36:49,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:36:49,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:36:49,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:36:48" (1/3) ... [2019-11-28 15:36:49,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc2aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:49, skipping insertion in model container [2019-11-28 15:36:49,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:36:49" (2/3) ... [2019-11-28 15:36:49,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc2aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:49, skipping insertion in model container [2019-11-28 15:36:49,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:49" (3/3) ... [2019-11-28 15:36:49,771 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2019-11-28 15:36:49,780 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:36:49,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:36:49,798 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:36:49,818 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:36:49,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:36:49,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:36:49,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:36:49,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:36:49,820 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:36:49,820 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:36:49,820 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:36:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-28 15:36:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:36:49,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:49,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:49,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-28 15:36:49,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:49,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627144494] [2019-11-28 15:36:49,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:50,004 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 15:36:50,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627144494] [2019-11-28 15:36:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:50,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:36:50,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118180832] [2019-11-28 15:36:50,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:36:50,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:36:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:36:50,027 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-28 15:36:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:50,043 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-28 15:36:50,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:36:50,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 15:36:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:50,052 INFO L225 Difference]: With dead ends: 29 [2019-11-28 15:36:50,052 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 15:36:50,055 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 15:36:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 15:36:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-28 15:36:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 15:36:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 15:36:50,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-28 15:36:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:50,094 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 15:36:50,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:36:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-28 15:36:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 15:36:50,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:50,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:50,096 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-28 15:36:50,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:50,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418474420] [2019-11-28 15:36:50,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:50,188 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 15:36:50,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418474420] [2019-11-28 15:36:50,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:50,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:36:50,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586121809] [2019-11-28 15:36:50,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:36:50,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:36:50,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:36:50,196 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-28 15:36:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:50,310 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-28 15:36:50,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:36:50,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 15:36:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:50,315 INFO L225 Difference]: With dead ends: 23 [2019-11-28 15:36:50,315 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 15:36:50,318 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 15:36:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 15:36:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 15:36:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 15:36:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 15:36:50,326 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-28 15:36:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:50,326 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 15:36:50,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:36:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 15:36:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 15:36:50,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:50,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:50,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-28 15:36:50,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:50,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074227156] [2019-11-28 15:36:50,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:36:50,463 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 15:36:50,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074227156] [2019-11-28 15:36:50,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:36:50,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:36:50,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183171196] [2019-11-28 15:36:50,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:36:50,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:36:50,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:36:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:36:50,465 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-28 15:36:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:36:50,529 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 15:36:50,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:36:50,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 15:36:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:36:50,531 INFO L225 Difference]: With dead ends: 22 [2019-11-28 15:36:50,531 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 15:36:50,532 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 15:36:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 15:36:50,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-28 15:36:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 15:36:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 15:36:50,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-11-28 15:36:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:36:50,542 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 15:36:50,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:36:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-28 15:36:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 15:36:50,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:36:50,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:36:50,545 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:36:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:36:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-28 15:36:50,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:36:50,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045128863] [2019-11-28 15:36:50,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:36:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:36:50,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:36:50,683 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:36:50,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:36:50 BoogieIcfgContainer [2019-11-28 15:36:50,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:36:50,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:36:50,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:36:50,718 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:36:50,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:49" (3/4) ... [2019-11-28 15:36:50,721 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:36:50,776 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:36:50,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:36:50,779 INFO L168 Benchmark]: Toolchain (without parser) took 1864.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -73.1 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,780 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:36:50,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.53 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 15:36:50,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,782 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,783 INFO L168 Benchmark]: RCFGBuilder took 341.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,783 INFO L168 Benchmark]: TraceAbstraction took 963.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,784 INFO L168 Benchmark]: Witness Printer took 59.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:36:50,788 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 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 364.53 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 102.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 341.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 963.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * Witness Printer took 59.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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