./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms5f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/ms5f.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fbcf0ae323fdb88d34a8135350bf54a7d5fdc85 ........................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-19 22:14:44,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:14:44,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:14:44,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:14:44,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:14:44,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:14:44,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:14:44,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:14:44,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:14:44,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:14:44,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:14:44,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:14:44,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:14:44,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:14:44,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:14:44,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:14:44,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:14:44,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:14:44,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:14:44,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:14:44,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:14:44,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:14:44,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:14:44,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:14:44,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:14:44,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:14:44,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:14:44,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:14:44,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:14:44,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:14:44,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:14:44,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:14:44,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:14:44,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:14:44,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:14:44,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:14:44,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:14:44,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:14:44,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:14:44,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:14:44,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:14:44,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:14:44,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:14:44,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:14:44,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:14:44,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:14:44,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:14:44,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:14:44,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:14:44,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:14:44,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:14:44,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:14:44,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:14:44,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:14:44,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:14:44,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:14:44,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:14:44,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:14:44,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:14:44,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:14:44,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:14:44,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:14:44,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:14:44,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:14:44,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:14:44,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:14:44,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:14:44,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:14:44,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:14:44,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:14:44,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:14:44,384 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(reach_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 -> 8fbcf0ae323fdb88d34a8135350bf54a7d5fdc85 [2020-10-19 22:14:44,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:14:44,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:14:44,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:14:44,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:14:44,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:14:44,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms5f.c [2020-10-19 22:14:44,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadd02d0a/30d2250a18734e6abb4955ab78c1de4e/FLAG431dab95d [2020-10-19 22:14:45,258 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:14:45,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms5f.c [2020-10-19 22:14:45,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadd02d0a/30d2250a18734e6abb4955ab78c1de4e/FLAG431dab95d [2020-10-19 22:14:45,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadd02d0a/30d2250a18734e6abb4955ab78c1de4e [2020-10-19 22:14:45,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:14:45,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:14:45,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:14:45,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:14:45,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:14:45,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39650d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45, skipping insertion in model container [2020-10-19 22:14:45,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:14:45,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:14:45,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:14:45,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:14:45,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:14:45,941 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:14:45,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45 WrapperNode [2020-10-19 22:14:45,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:14:45,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:14:45,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:14:45,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:14:45,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:14:45,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:14:45,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:14:45,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:14:45,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:45,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:46,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:46,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:46,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (1/1) ... [2020-10-19 22:14:46,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:14:46,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:14:46,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:14:46,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:14:46,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (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 [2020-10-19 22:14:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:14:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:14:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:14:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:14:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:14:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:14:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:14:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 22:14:46,360 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:14:46,361 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-19 22:14:46,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:14:46 BoogieIcfgContainer [2020-10-19 22:14:46,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:14:46,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:14:46,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:14:46,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:14:46,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:14:45" (1/3) ... [2020-10-19 22:14:46,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2386c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:14:46, skipping insertion in model container [2020-10-19 22:14:46,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:14:45" (2/3) ... [2020-10-19 22:14:46,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2386c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:14:46, skipping insertion in model container [2020-10-19 22:14:46,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:14:46" (3/3) ... [2020-10-19 22:14:46,373 INFO L111 eAbstractionObserver]: Analyzing ICFG ms5f.c [2020-10-19 22:14:46,387 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:14:46,400 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:14:46,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:14:46,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:14:46,456 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:14:46,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:14:46,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:14:46,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:14:46,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:14:46,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:14:46,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:14:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-19 22:14:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 22:14:46,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:14:46,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:14:46,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:14:46,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:14:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2020-10-19 22:14:46,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:14:46,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721440801] [2020-10-19 22:14:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:14:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:14:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:14:46,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721440801] [2020-10-19 22:14:46,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:14:46,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:14:46,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135651159] [2020-10-19 22:14:46,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:14:46,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:14:46,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:14:46,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:14:46,692 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-19 22:14:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:14:46,711 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-19 22:14:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:14:46,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-19 22:14:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:14:46,724 INFO L225 Difference]: With dead ends: 35 [2020-10-19 22:14:46,724 INFO L226 Difference]: Without dead ends: 15 [2020-10-19 22:14:46,728 INFO L677 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 [2020-10-19 22:14:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-19 22:14:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-19 22:14:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 22:14:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-19 22:14:46,760 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-10-19 22:14:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:14:46,760 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-19 22:14:46,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:14:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-19 22:14:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 22:14:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:14:46,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:14:46,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:14:46,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:14:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:14:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2020-10-19 22:14:46,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:14:46,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476035601] [2020-10-19 22:14:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:14:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:14:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:14:46,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476035601] [2020-10-19 22:14:46,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:14:46,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:14:46,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206121516] [2020-10-19 22:14:46,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:14:46,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:14:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:14:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:14:46,857 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-10-19 22:14:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:14:46,941 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-10-19 22:14:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:14:46,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 22:14:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:14:46,943 INFO L225 Difference]: With dead ends: 28 [2020-10-19 22:14:46,943 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 22:14:46,944 INFO L677 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 [2020-10-19 22:14:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 22:14:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-10-19 22:14:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 22:14:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-19 22:14:46,949 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2020-10-19 22:14:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:14:46,950 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-19 22:14:46,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:14:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-19 22:14:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:14:46,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:14:46,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:14:46,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:14:46,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:14:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:14:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2020-10-19 22:14:46,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:14:46,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463038115] [2020-10-19 22:14:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:14:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:14:47,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:14:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:14:47,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:14:47,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:14:47,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:14:47,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:14:47,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:14:47 BoogieIcfgContainer [2020-10-19 22:14:47,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:14:47,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:14:47,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:14:47,132 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:14:47,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:14:46" (3/4) ... [2020-10-19 22:14:47,135 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:14:47,205 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:14:47,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:14:47,208 INFO L168 Benchmark]: Toolchain (without parser) took 1571.45 ms. Allocated memory was 42.5 MB in the beginning and 48.2 MB in the end (delta: 5.8 MB). Free memory was 22.7 MB in the beginning and 21.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,209 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.0 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.19 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 23.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,211 INFO L168 Benchmark]: Boogie Preprocessor took 28.79 ms. Allocated memory is still 43.0 MB. Free memory was 22.1 MB in the beginning and 20.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,212 INFO L168 Benchmark]: RCFGBuilder took 349.17 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 20.5 MB in the beginning and 24.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,212 INFO L168 Benchmark]: TraceAbstraction took 766.61 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 23.5 MB in the beginning and 24.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,213 INFO L168 Benchmark]: Witness Printer took 73.70 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 21.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:14:47,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 32.0 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 299.19 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 23.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.79 ms. Allocated memory is still 43.0 MB. Free memory was 22.1 MB in the beginning and 20.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 349.17 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 20.5 MB in the beginning and 24.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 766.61 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 23.5 MB in the beginning and 24.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Witness Printer took 73.70 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 21.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 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: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i