./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/sina3f.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 454e3dc17f2f7a976c420a2a301ab5969f35f377 ....................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 19:32:19,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:32:19,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:32:19,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:32:19,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:32:19,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:32:19,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:32:19,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:32:19,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:32:19,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:32:19,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:32:19,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:32:19,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:32:19,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:32:19,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:32:19,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:32:19,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:32:19,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:32:19,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:32:19,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:32:19,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:32:19,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:32:19,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:32:19,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:32:19,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:32:19,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:32:19,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:32:19,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:32:19,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:32:19,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:32:19,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:32:19,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:32:19,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:32:19,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:32:19,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:32:19,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:32:19,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:32:19,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:32:19,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:32:19,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:32:19,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:32:19,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:32:19,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:32:19,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:32:19,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:32:19,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:32:19,432 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:32:19,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:32:19,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:32:19,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:32:19,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:32:19,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:32:19,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:32:19,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:32:19,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:32:19,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:32:19,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:32:19,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:32:19,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:32:19,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:32:19,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:32:19,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:32:19,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:32:19,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:32:19,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:32:19,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:32:19,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:32:19,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:32:19,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:32:19,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:32:19,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:32:19,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454e3dc17f2f7a976c420a2a301ab5969f35f377 [2020-10-25 19:32:19,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:32:19,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:32:19,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:32:19,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:32:19,888 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:32:19,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina3f.c [2020-10-25 19:32:19,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e603f47d2/3a6d340f11004e42aca3292fc20c1d5e/FLAG277b5815f [2020-10-25 19:32:20,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:32:20,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina3f.c [2020-10-25 19:32:20,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e603f47d2/3a6d340f11004e42aca3292fc20c1d5e/FLAG277b5815f [2020-10-25 19:32:20,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e603f47d2/3a6d340f11004e42aca3292fc20c1d5e [2020-10-25 19:32:20,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:32:20,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:32:20,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:32:20,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:32:20,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:32:20,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:32:20" (1/1) ... [2020-10-25 19:32:20,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc79d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:20, skipping insertion in model container [2020-10-25 19:32:20,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:32:20" (1/1) ... [2020-10-25 19:32:21,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:32:21,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:32:21,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:32:21,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:32:21,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:32:21,283 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:32:21,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21 WrapperNode [2020-10-25 19:32:21,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:32:21,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:32:21,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:32:21,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:32:21,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:32:21,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:32:21,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:32:21,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:32:21,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (1/1) ... [2020-10-25 19:32:21,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:32:21,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:32:21,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:32:21,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:32:21,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (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 [2020-10-25 19:32:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:32:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:32:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:32:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:32:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:32:21,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:32:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:32:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 19:32:21,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:32:21,845 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-25 19:32:21,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:32:21 BoogieIcfgContainer [2020-10-25 19:32:21,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:32:21,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:32:21,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:32:21,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:32:21,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:32:20" (1/3) ... [2020-10-25 19:32:21,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1887c677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:32:21, skipping insertion in model container [2020-10-25 19:32:21,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:32:21" (2/3) ... [2020-10-25 19:32:21,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1887c677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:32:21, skipping insertion in model container [2020-10-25 19:32:21,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:32:21" (3/3) ... [2020-10-25 19:32:21,867 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2020-10-25 19:32:21,885 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:32:21,892 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:32:21,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:32:21,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:32:21,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:32:21,998 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:32:21,998 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:32:21,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:32:21,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:32:21,999 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:32:21,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:32:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-25 19:32:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:32:22,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:32:22,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:32:22,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:32:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:32:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-10-25 19:32:22,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:32:22,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773117537] [2020-10-25 19:32:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:32:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:32:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:32:22,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773117537] [2020-10-25 19:32:22,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:32:22,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:32:22,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075625163] [2020-10-25 19:32:22,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:32:22,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:32:22,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:32:22,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:32:22,252 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-25 19:32:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:32:22,279 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2020-10-25 19:32:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:32:22,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 19:32:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:32:22,292 INFO L225 Difference]: With dead ends: 51 [2020-10-25 19:32:22,292 INFO L226 Difference]: Without dead ends: 23 [2020-10-25 19:32:22,296 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 [2020-10-25 19:32:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-25 19:32:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-25 19:32:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-25 19:32:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-25 19:32:22,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-25 19:32:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:32:22,349 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-25 19:32:22,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:32:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-25 19:32:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:32:22,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:32:22,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:32:22,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:32:22,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:32:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:32:22,356 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-10-25 19:32:22,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:32:22,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280581406] [2020-10-25 19:32:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:32:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:32:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:32:22,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280581406] [2020-10-25 19:32:22,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:32:22,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:32:22,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759605951] [2020-10-25 19:32:22,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:32:22,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:32:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:32:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:32:22,530 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-10-25 19:32:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:32:22,654 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-25 19:32:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:32:22,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-25 19:32:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:32:22,660 INFO L225 Difference]: With dead ends: 53 [2020-10-25 19:32:22,660 INFO L226 Difference]: Without dead ends: 37 [2020-10-25 19:32:22,662 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 [2020-10-25 19:32:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-25 19:32:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-25 19:32:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 19:32:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-25 19:32:22,671 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-10-25 19:32:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:32:22,671 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-25 19:32:22,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:32:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-25 19:32:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:32:22,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:32:22,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:32:22,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:32:22,674 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:32:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:32:22,675 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-10-25 19:32:22,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:32:22,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405091896] [2020-10-25 19:32:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:32:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:32:22,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:32:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:32:22,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:32:22,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:32:22,847 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:32:22,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:32:22,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:32:22 BoogieIcfgContainer [2020-10-25 19:32:22,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:32:22,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:32:22,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:32:22,935 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:32:22,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:32:21" (3/4) ... [2020-10-25 19:32:22,940 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:32:23,045 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:32:23,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:32:23,050 INFO L168 Benchmark]: Toolchain (without parser) took 2099.27 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 20.9 MB in the beginning and 35.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,051 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 21.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:32:23,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.05 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 29.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,062 INFO L168 Benchmark]: Boogie Preprocessor took 39.81 ms. Allocated memory is still 54.5 MB. Free memory was 28.0 MB in the beginning and 26.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,064 INFO L168 Benchmark]: RCFGBuilder took 475.30 ms. Allocated memory is still 54.5 MB. Free memory was 26.7 MB in the beginning and 24.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,065 INFO L168 Benchmark]: TraceAbstraction took 1078.30 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 38.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,067 INFO L168 Benchmark]: Witness Printer took 112.17 ms. Allocated memory is still 67.1 MB. Free memory was 38.9 MB in the beginning and 35.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:32:23,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 21.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.05 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 29.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.81 ms. Allocated memory is still 54.5 MB. Free memory was 28.0 MB in the beginning and 26.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 475.30 ms. Allocated memory is still 54.5 MB. Free memory was 26.7 MB in the beginning and 24.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1078.30 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 38.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 112.17 ms. Allocated memory is still 67.1 MB. Free memory was 38.9 MB in the beginning and 35.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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] long long *a = malloc(sizeof(long long)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 VAL [N=1] [L33] COND TRUE i