./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/ldv-regression/fo_test.i -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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:02:54,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:02:54,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:02:54,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:02:54,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:02:54,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:02:54,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:02:54,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:02:54,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:02:54,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:02:54,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:02:54,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:02:54,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:02:54,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:02:54,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:02:54,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:02:54,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:02:54,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:02:54,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:02:54,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:02:54,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:02:54,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:02:54,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:02:54,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:02:54,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:02:54,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:02:54,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:02:54,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:02:54,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:02:54,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:02:54,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:02:54,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:02:54,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:02:54,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:02:54,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:02:54,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:02:54,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:02:54,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:02:54,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:02:54,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:02:54,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:02:54,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:02:54,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:02:54,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:02:54,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:02:54,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:02:54,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:02:54,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:02:54,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:02:54,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:02:54,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:02:54,442 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:02:54,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:02:54,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:02:54,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:02:54,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:02:54,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:02:54,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:02:54,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:02:54,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:02:54,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:02:54,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:02:54,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:02:54,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:02:54,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:02:54,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:02:54,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:02:54,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:02:54,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:02:54,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:02:54,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:02:54,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2022-07-21 02:02:54,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:02:54,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:02:54,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:02:54,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:02:54,735 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:02:54,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-21 02:02:54,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80477f92/e90ba54a91e547ce92cf77292cf0649f/FLAG98fc579dc [2022-07-21 02:02:55,230 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:02:55,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-21 02:02:55,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80477f92/e90ba54a91e547ce92cf77292cf0649f/FLAG98fc579dc [2022-07-21 02:02:55,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80477f92/e90ba54a91e547ce92cf77292cf0649f [2022-07-21 02:02:55,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:02:55,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:02:55,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:02:55,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:02:55,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:02:55,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:55" (1/1) ... [2022-07-21 02:02:55,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64227029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:55, skipping insertion in model container [2022-07-21 02:02:55,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:55" (1/1) ... [2022-07-21 02:02:55,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:02:55,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:02:56,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-07-21 02:02:56,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:02:56,106 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:02:56,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-07-21 02:02:56,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:02:56,187 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:02:56,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56 WrapperNode [2022-07-21 02:02:56,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:02:56,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:02:56,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:02:56,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:02:56,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,226 INFO L137 Inliner]: procedures = 229, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 56 [2022-07-21 02:02:56,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:02:56,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:02:56,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:02:56,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:02:56,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:02:56,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:02:56,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:02:56,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:02:56,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (1/1) ... [2022-07-21 02:02:56,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:02:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:02:56,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:02:56,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:02:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:02:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:02:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-07-21 02:02:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:02:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:02:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:02:56,506 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:02:56,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:02:56,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:02:56,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:02:56,632 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 02:02:56,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:56 BoogieIcfgContainer [2022-07-21 02:02:56,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:02:56,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:02:56,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:02:56,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:02:56,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:02:55" (1/3) ... [2022-07-21 02:02:56,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e2bc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:56, skipping insertion in model container [2022-07-21 02:02:56,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:56" (2/3) ... [2022-07-21 02:02:56,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e2bc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:56, skipping insertion in model container [2022-07-21 02:02:56,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:56" (3/3) ... [2022-07-21 02:02:56,638 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2022-07-21 02:02:56,652 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:02:56,652 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:02:56,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:02:56,706 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71ac9e6a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@767d16a9 [2022-07-21 02:02:56,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:02:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:02:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:02:56,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:02:56,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:02:56,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:02:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:02:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2022-07-21 02:02:56,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:02:56,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270364782] [2022-07-21 02:02:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:02:56,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:02:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:02:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:02:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:02:56,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270364782] [2022-07-21 02:02:56,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270364782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:02:56,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:02:56,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:02:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302629743] [2022-07-21 02:02:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:02:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:02:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:02:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:02:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:02:57,016 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:02:57,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:02:57,042 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-21 02:02:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:02:57,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-21 02:02:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:02:57,050 INFO L225 Difference]: With dead ends: 25 [2022-07-21 02:02:57,050 INFO L226 Difference]: Without dead ends: 9 [2022-07-21 02:02:57,053 INFO L412 NwaCegarLoop]: 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 [2022-07-21 02:02:57,057 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:02:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:02:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-21 02:02:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-21 02:02:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:02:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-21 02:02:57,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-21 02:02:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:02:57,084 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-21 02:02:57,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:02:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-21 02:02:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:02:57,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:02:57,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:02:57,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:02:57,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:02:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:02:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2022-07-21 02:02:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:02:57,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350743570] [2022-07-21 02:02:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:02:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:02:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:02:57,148 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:02:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:02:57,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 02:02:57,196 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:02:57,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:02:57,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:02:57,208 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 02:02:57,211 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:02:57,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:02:57 BoogieIcfgContainer [2022-07-21 02:02:57,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:02:57,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:02:57,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:02:57,251 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:02:57,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:56" (3/4) ... [2022-07-21 02:02:57,255 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 02:02:57,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:02:57,256 INFO L158 Benchmark]: Toolchain (without parser) took 1482.61ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 27.8MB in the beginning and 37.3MB in the end (delta: -9.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,257 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:02:57,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.71ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 43.0MB in the end (delta: -15.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.02ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 40.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,262 INFO L158 Benchmark]: Boogie Preprocessor took 40.23ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 38.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,262 INFO L158 Benchmark]: RCFGBuilder took 365.83ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,262 INFO L158 Benchmark]: TraceAbstraction took 614.54ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 37.0MB in the beginning and 37.6MB in the end (delta: -612.3kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-07-21 02:02:57,263 INFO L158 Benchmark]: Witness Printer took 4.96ms. Allocated memory is still 75.5MB. Free memory was 37.6MB in the beginning and 37.3MB in the end (delta: 343.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:02:57,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.71ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 43.0MB in the end (delta: -15.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.02ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 40.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.23ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 38.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.83ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 614.54ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 37.0MB in the beginning and 37.6MB in the end (delta: -612.3kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Witness Printer took 4.96ms. Allocated memory is still 75.5MB. Free memory was 37.6MB in the beginning and 37.3MB in the end (delta: 343.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 02:02:57,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-regression/fo_test.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:02:58,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:02:58,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:02:58,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:02:58,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:02:58,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:02:58,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:02:58,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:02:58,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:02:58,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:02:58,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:02:58,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:02:58,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:02:58,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:02:58,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:02:58,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:02:58,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:02:58,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:02:59,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:02:59,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:02:59,006 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:02:59,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:02:59,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:02:59,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:02:59,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:02:59,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:02:59,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:02:59,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:02:59,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:02:59,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:02:59,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:02:59,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:02:59,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:02:59,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:02:59,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:02:59,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:02:59,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:02:59,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:02:59,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:02:59,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:02:59,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:02:59,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:02:59,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 02:02:59,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:02:59,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:02:59,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:02:59,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:02:59,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:02:59,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:02:59,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:02:59,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:02:59,053 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:02:59,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:02:59,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:02:59,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 02:02:59,055 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 02:02:59,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:02:59,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:02:59,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:02:59,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:02:59,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:02:59,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:02:59,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:02:59,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:02:59,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:02:59,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:02:59,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:02:59,057 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 02:02:59,058 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2022-07-21 02:02:59,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:02:59,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:02:59,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:02:59,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:02:59,318 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:02:59,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-21 02:02:59,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f235613b8/a12c449033cd489c9a1f67e48421c7dd/FLAGd1d165c95 [2022-07-21 02:02:59,787 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:02:59,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-21 02:02:59,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f235613b8/a12c449033cd489c9a1f67e48421c7dd/FLAGd1d165c95 [2022-07-21 02:02:59,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f235613b8/a12c449033cd489c9a1f67e48421c7dd [2022-07-21 02:02:59,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:02:59,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:02:59,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:02:59,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:02:59,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:02:59,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:59" (1/1) ... [2022-07-21 02:02:59,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389b187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:59, skipping insertion in model container [2022-07-21 02:02:59,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:59" (1/1) ... [2022-07-21 02:02:59,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:02:59,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:03:00,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-07-21 02:03:00,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:00,224 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:03:00,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-07-21 02:03:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:00,327 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:03:00,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00 WrapperNode [2022-07-21 02:03:00,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:03:00,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:00,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:03:00,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:03:00,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,382 INFO L137 Inliner]: procedures = 230, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 52 [2022-07-21 02:03:00,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:00,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:03:00,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:03:00,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:03:00,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:03:00,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:03:00,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:03:00,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:03:00,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (1/1) ... [2022-07-21 02:03:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:03:00,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:03:00,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:03:00,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:03:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 02:03:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:03:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:03:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-07-21 02:03:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:03:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:03:00,704 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:03:00,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:03:00,799 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:03:00,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:03:00,804 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 02:03:00,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:00 BoogieIcfgContainer [2022-07-21 02:03:00,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:03:00,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:03:00,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:03:00,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:03:00,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:02:59" (1/3) ... [2022-07-21 02:03:00,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199bb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:00, skipping insertion in model container [2022-07-21 02:03:00,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:00" (2/3) ... [2022-07-21 02:03:00,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199bb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:00, skipping insertion in model container [2022-07-21 02:03:00,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:00" (3/3) ... [2022-07-21 02:03:00,813 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2022-07-21 02:03:00,836 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:03:00,836 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:03:00,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:03:00,877 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71c5f24b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b0e6de0 [2022-07-21 02:03:00,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:03:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:03:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:03:00,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:00,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:00,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2022-07-21 02:03:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:03:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085950212] [2022-07-21 02:03:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:00,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:03:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:03:00,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:03:00,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 02:03:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:03:01,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 02:03:01,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:03:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:01,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:03:01,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:03:01,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085950212] [2022-07-21 02:03:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085950212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:03:01,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:03:01,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:03:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062762775] [2022-07-21 02:03:01,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:03:01,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:03:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:03:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:03:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:03:01,073 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:03:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:03:01,088 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-21 02:03:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:03:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-21 02:03:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:03:01,094 INFO L225 Difference]: With dead ends: 25 [2022-07-21 02:03:01,094 INFO L226 Difference]: Without dead ends: 9 [2022-07-21 02:03:01,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:03:01,099 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:03:01,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:03:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-21 02:03:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-21 02:03:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:03:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-21 02:03:01,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-21 02:03:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:03:01,117 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-21 02:03:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:03:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-21 02:03:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:03:01,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:01,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:01,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:03:01,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:03:01,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:01,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2022-07-21 02:03:01,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:03:01,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901306070] [2022-07-21 02:03:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:03:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:03:01,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:03:01,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 02:03:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:01,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:03:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:01,462 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 02:03:01,462 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:03:01,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:03:01,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:03:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:03:01,668 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 02:03:01,670 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:03:01,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:03:01 BoogieIcfgContainer [2022-07-21 02:03:01,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:03:01,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:03:01,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:03:01,688 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:03:01,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:00" (3/4) ... [2022-07-21 02:03:01,691 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 02:03:01,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:03:01,694 INFO L158 Benchmark]: Toolchain (without parser) took 1874.69ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 29.5MB in the beginning and 42.4MB in the end (delta: -12.9MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-07-21 02:03:01,694 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:01,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.59ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 53.3MB in the end (delta: -24.0MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-21 02:03:01,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.32ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 50.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:03:01,695 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 48.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:03:01,696 INFO L158 Benchmark]: RCFGBuilder took 381.86ms. Allocated memory is still 73.4MB. Free memory was 48.0MB in the beginning and 33.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 02:03:01,696 INFO L158 Benchmark]: TraceAbstraction took 880.31ms. Allocated memory is still 73.4MB. Free memory was 33.1MB in the beginning and 42.4MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:01,696 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 73.4MB. Free memory is still 42.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:01,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.59ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 53.3MB in the end (delta: -24.0MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.32ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 50.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 48.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.86ms. Allocated memory is still 73.4MB. Free memory was 48.0MB in the beginning and 33.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 880.31ms. Allocated memory is still 73.4MB. Free memory was 33.1MB in the beginning and 42.4MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 73.4MB. Free memory is still 42.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 02:03:01,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample