./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test30-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/test30-1.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 d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:07:05,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:07:05,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:07:05,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:07:05,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:07:05,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:07:05,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:07:05,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:07:05,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:07:05,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:07:05,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:07:05,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:07:05,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:07:05,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:07:05,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:07:05,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:07:05,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:07:05,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:07:05,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:07:05,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:07:05,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:07:05,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:07:05,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:07:05,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:07:05,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:07:05,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:07:05,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:07:05,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:07:05,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:07:05,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:07:05,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:07:05,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:07:05,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:07:05,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:07:05,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:07:05,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:07:05,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:07:05,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:07:05,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:07:05,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:07:05,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:07:05,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:07:05,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:07:05,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:07:05,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:07:05,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:07:05,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:07:05,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:07:05,407 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:07:05,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:07:05,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:07:05,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:07:05,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:07:05,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:07:05,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:07:05,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:07:05,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:07:05,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 [2021-08-29 09:07:05,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:07:05,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:07:05,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:07:05,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:07:05,670 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:07:05,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test30-1.c [2021-08-29 09:07:05,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a93f2b9/a2f47d956a3d4c8893f8cdfdf9d98493/FLAGb273ae8b5 [2021-08-29 09:07:06,079 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:07:06,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test30-1.c [2021-08-29 09:07:06,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a93f2b9/a2f47d956a3d4c8893f8cdfdf9d98493/FLAGb273ae8b5 [2021-08-29 09:07:06,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a93f2b9/a2f47d956a3d4c8893f8cdfdf9d98493 [2021-08-29 09:07:06,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:07:06,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:07:06,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:07:06,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:07:06,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:07:06,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b9aa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06, skipping insertion in model container [2021-08-29 09:07:06,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:07:06,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:07:06,230 WARN L228 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/test30-1.c[560,573] [2021-08-29 09:07:06,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:07:06,246 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:07:06,258 WARN L228 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/test30-1.c[560,573] [2021-08-29 09:07:06,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:07:06,284 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:07:06,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06 WrapperNode [2021-08-29 09:07:06,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:07:06,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:07:06,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:07:06,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:07:06,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:07:06,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:07:06,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:07:06,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:07:06,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:07:06,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:07:06,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:07:06,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:07:06,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (1/1) ... [2021-08-29 09:07:06,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:07:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:07:06,378 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) [2021-08-29 09:07:06,408 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 [2021-08-29 09:07:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 09:07:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-29 09:07:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:07:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:07:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:07:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:07:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:07:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:07:06,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:07:06,583 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 09:07:06,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:07:06 BoogieIcfgContainer [2021-08-29 09:07:06,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:07:06,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:07:06,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:07:06,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:07:06,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:07:06" (1/3) ... [2021-08-29 09:07:06,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265cd0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:07:06, skipping insertion in model container [2021-08-29 09:07:06,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:07:06" (2/3) ... [2021-08-29 09:07:06,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265cd0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:07:06, skipping insertion in model container [2021-08-29 09:07:06,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:07:06" (3/3) ... [2021-08-29 09:07:06,590 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-1.c [2021-08-29 09:07:06,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:07:06,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:07:06,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:07:06,626 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 09:07:06,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:07:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-08-29 09:07:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 09:07:06,638 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:07:06,639 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 09:07:06,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:07:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:07:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 889475945, now seen corresponding path program 1 times [2021-08-29 09:07:06,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:07:06,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089776006] [2021-08-29 09:07:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:07:06,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:07:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:07:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:07:07,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:07:07,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089776006] [2021-08-29 09:07:07,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089776006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:07:07,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:07:07,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:07:07,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306397818] [2021-08-29 09:07:07,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:07:07,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:07:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:07:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:07:07,034 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-08-29 09:07:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:07:07,079 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-29 09:07:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:07:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-08-29 09:07:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:07:07,085 INFO L225 Difference]: With dead ends: 13 [2021-08-29 09:07:07,086 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 09:07:07,089 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.87ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:07:07,094 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.20ms IncrementalHoareTripleChecker+Time [2021-08-29 09:07:07,095 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 24.20ms Time] [2021-08-29 09:07:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 09:07:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 09:07:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-29 09:07:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 09:07:07,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-08-29 09:07:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:07:07,111 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 09:07:07,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-08-29 09:07:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 09:07:07,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 09:07:07,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:07:07,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:07:07,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 09:07:07,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:07:07,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:07:07,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 09:07:07,126 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 09:07:07,127 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 09:07:07,127 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 09:07:07,127 INFO L854 garLoopResultBuilder]: At program point L28(lines 22 35) the Hoare annotation is: false [2021-08-29 09:07:07,127 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 29) no Hoare annotation was computed. [2021-08-29 09:07:07,127 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2021-08-29 09:07:07,128 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-08-29 09:07:07,129 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-29 09:07:07,129 INFO L854 garLoopResultBuilder]: At program point L34(lines 21 35) the Hoare annotation is: (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|)) [2021-08-29 09:07:07,133 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:07:07,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:07:07 BoogieIcfgContainer [2021-08-29 09:07:07,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:07:07,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:07:07,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:07:07,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:07:07,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:07:06" (3/4) ... [2021-08-29 09:07:07,156 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 09:07:07,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 09:07:07,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-29 09:07:07,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:07:07,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:07:07,203 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:07:07,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:07:07,204 INFO L158 Benchmark]: Toolchain (without parser) took 1104.44ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 70.1MB in the end (delta: -20.8MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-08-29 09:07:07,206 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 50.2MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:07:07,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.47ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 52.6MB in the end (delta: -3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 09:07:07,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.37ms. Allocated memory is still 69.2MB. Free memory was 52.4MB in the beginning and 51.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:07:07,207 INFO L158 Benchmark]: Boogie Preprocessor took 31.44ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 50.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:07:07,208 INFO L158 Benchmark]: RCFGBuilder took 232.20ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 40.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 09:07:07,208 INFO L158 Benchmark]: TraceAbstraction took 563.75ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 31.3MB in the end (delta: 8.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-08-29 09:07:07,209 INFO L158 Benchmark]: Witness Printer took 52.21ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 31.0MB in the beginning and 70.1MB in the end (delta: -39.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-08-29 09:07:07,210 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 69.2MB. Free memory was 50.2MB in the beginning and 50.2MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.47ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 52.6MB in the end (delta: -3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.37ms. Allocated memory is still 69.2MB. Free memory was 52.4MB in the beginning and 51.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.44ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 50.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.20ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 40.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 563.75ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 31.3MB in the end (delta: 8.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Witness Printer took 52.21ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 31.0MB in the beginning and 70.1MB in the end (delta: -39.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 33]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 513.17ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.88ms, AutomataDifference: 82.25ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 10.39ms, InitialAbstractionConstructionTime: 6.50ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 24.20ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 19.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 20 mSolverCounterSat, 0.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.87ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 5.77ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.83ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.10ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 14.92ms SsaConstructionTime, 77.11ms SatisfiabilityAnalysisTime, 194.28ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a] - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-29 09:07:07,250 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...