./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/trex01-1.c --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/loops/trex01-1.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 17ed4d99148ac6ada38ac6bc04d827b0b0eab6c02993086c8fdb9ca9151ff08c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:31:09,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:31:09,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:31:09,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:31:09,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:31:09,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:31:09,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:31:09,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:31:09,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:31:09,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:31:09,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:31:09,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:31:09,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:31:09,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:31:09,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:31:09,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:31:09,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:31:09,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:31:09,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:31:09,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:31:09,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:31:09,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:31:09,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:31:09,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:31:09,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:31:09,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:31:09,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:31:09,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:31:09,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:31:09,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:31:09,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:31:09,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:31:09,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:31:09,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:31:09,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:31:09,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:31:09,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:31:09,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:31:09,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:31:09,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:31:09,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:31:09,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:31:09,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:31:09,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:31:09,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:31:09,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:31:09,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:31:09,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:31:09,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:31:09,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:31:09,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:31:09,346 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:31:09,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:31:09,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:31:09,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:31:09,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:31:09,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:31:09,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:31:09,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:31:09,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:31:09,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:31:09,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:31:09,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:09,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:31:09,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:31:09,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:31:09,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:31:09,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:31:09,351 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:31:09,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:31:09,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:31:09,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17ed4d99148ac6ada38ac6bc04d827b0b0eab6c02993086c8fdb9ca9151ff08c [2022-07-21 02:31:09,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:31:09,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:31:09,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:31:09,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:31:09,642 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:31:09,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex01-1.c [2022-07-21 02:31:09,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f5aee87/8278909d8b88426a8ff797504fb0e61f/FLAG9ed2d0ba1 [2022-07-21 02:31:10,037 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:31:10,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex01-1.c [2022-07-21 02:31:10,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f5aee87/8278909d8b88426a8ff797504fb0e61f/FLAG9ed2d0ba1 [2022-07-21 02:31:10,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f5aee87/8278909d8b88426a8ff797504fb0e61f [2022-07-21 02:31:10,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:31:10,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:31:10,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:10,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:31:10,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:31:10,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6642806e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10, skipping insertion in model container [2022-07-21 02:31:10,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:31:10,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:31:10,197 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/loops/trex01-1.c[320,333] [2022-07-21 02:31:10,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:10,226 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:31:10,272 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/loops/trex01-1.c[320,333] [2022-07-21 02:31:10,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:10,289 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:31:10,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10 WrapperNode [2022-07-21 02:31:10,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:10,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:10,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:31:10,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:31:10,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,319 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2022-07-21 02:31:10,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:10,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:31:10,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:31:10,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:31:10,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:31:10,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:31:10,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:31:10,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:31:10,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (1/1) ... [2022-07-21 02:31:10,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:31:10,379 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 02:31:10,387 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 02:31:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:31:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-21 02:31:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-21 02:31:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:31:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:31:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:31:10,456 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:31:10,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:31:10,551 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:31:10,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:31:10,556 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 02:31:10,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:10 BoogieIcfgContainer [2022-07-21 02:31:10,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:31:10,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:31:10,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:31:10,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:31:10,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:31:10" (1/3) ... [2022-07-21 02:31:10,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8ad64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:10, skipping insertion in model container [2022-07-21 02:31:10,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:10" (2/3) ... [2022-07-21 02:31:10,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8ad64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:10, skipping insertion in model container [2022-07-21 02:31:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:10" (3/3) ... [2022-07-21 02:31:10,584 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2022-07-21 02:31:10,593 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:31:10,607 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:31:10,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:31:10,660 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@2774c0d7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a8cdde7 [2022-07-21 02:31:10,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:31:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 02:31:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 02:31:10,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:10,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:31:10,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 691447513, now seen corresponding path program 1 times [2022-07-21 02:31:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128236121] [2022-07-21 02:31:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:31:10,780 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:31:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:31:10,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 02:31:10,826 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:31:10,827 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:31:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:31:10,831 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 02:31:10,834 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:31:10,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:31:10 BoogieIcfgContainer [2022-07-21 02:31:10,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:31:10,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:31:10,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:31:10,855 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:31:10,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:10" (3/4) ... [2022-07-21 02:31:10,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 02:31:10,897 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:31:10,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:31:10,899 INFO L158 Benchmark]: Toolchain (without parser) took 838.71ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 38.0MB in the beginning and 52.4MB in the end (delta: -14.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-21 02:31:10,900 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:10,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.37ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.6MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 02:31:10,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.72ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 41.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:10,901 INFO L158 Benchmark]: Boogie Preprocessor took 32.86ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.0MB in the end (delta: 841.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:10,901 INFO L158 Benchmark]: RCFGBuilder took 206.53ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 30.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 02:31:10,902 INFO L158 Benchmark]: TraceAbstraction took 290.11ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 30.2MB in the beginning and 54.1MB in the end (delta: -23.9MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2022-07-21 02:31:10,902 INFO L158 Benchmark]: Witness Printer took 42.44ms. Allocated memory is still 81.8MB. Free memory was 54.1MB in the beginning and 52.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:31:10,907 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 58.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.37ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.6MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.72ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 41.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.86ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.0MB in the end (delta: 841.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.53ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 30.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 290.11ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 30.2MB in the beginning and 54.1MB in the end (delta: -23.9MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 42.44ms. Allocated memory is still 81.8MB. Free memory was 54.1MB in the beginning and 52.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] _Bool c = __VERIFIER_nondet_bool(); [L37] COND TRUE \read(c) VAL [c=1] [L38] CALL f(1) [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L16] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L19] COND FALSE !(z < k) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L20] CALL __VERIFIER_assert(z>=2) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 proved your program to be incorrect! [2022-07-21 02:31:10,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE