./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/lu.cmp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/lu.cmp.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 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:15:20,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:15:20,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:15:20,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:15:20,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:15:20,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:15:20,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:15:20,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:15:20,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:15:20,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:15:20,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:15:20,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:15:20,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:15:20,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:15:20,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:15:20,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:15:20,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:15:20,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:15:20,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:15:20,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:15:20,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:15:20,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:15:20,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:15:20,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:15:20,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:15:20,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:15:20,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:15:20,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:15:20,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:15:20,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:15:20,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:15:20,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:15:20,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:15:20,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:15:20,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:15:20,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:15:20,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:15:20,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:15:20,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:15:20,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:15:20,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:15:20,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:15:20,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:15:20,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:15:20,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:15:20,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:15:20,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:15:20,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:15:20,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:15:20,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:15:20,466 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:15:20,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:15:20,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:15:20,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:15:20,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:15:20,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:15:20,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:15:20,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:15:20,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:15:20,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:15:20,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:15:20,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:15:20,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:15:20,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:15:20,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:15:20,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:15:20,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:15:20,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:15:20,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:15:20,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:15:20,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:15:20,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 [2021-12-21 12:15:20,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:15:20,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:15:20,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:15:20,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:15:20,747 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:15:20,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2021-12-21 12:15:20,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934313816/d1e966b8495c4c3faa28a36017388b8f/FLAG73e77d048 [2021-12-21 12:15:21,176 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:15:21,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2021-12-21 12:15:21,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934313816/d1e966b8495c4c3faa28a36017388b8f/FLAG73e77d048 [2021-12-21 12:15:21,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934313816/d1e966b8495c4c3faa28a36017388b8f [2021-12-21 12:15:21,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:15:21,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:15:21,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:15:21,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:15:21,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:15:21,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469137ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21, skipping insertion in model container [2021-12-21 12:15:21,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:15:21,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:15:21,776 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/lu.cmp.c[318,331] [2021-12-21 12:15:21,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:15:21,837 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:15:21,850 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/lu.cmp.c[318,331] [2021-12-21 12:15:21,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:15:21,887 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:15:21,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21 WrapperNode [2021-12-21 12:15:21,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:15:21,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:15:21,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:15:21,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:15:21,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,927 INFO L137 Inliner]: procedures = 17, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2021-12-21 12:15:21,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:15:21,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:15:21,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:15:21,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:15:21,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:15:21,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:15:21,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:15:21,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:15:21,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (1/1) ... [2021-12-21 12:15:21,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:15:21,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:15:21,997 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) [2021-12-21 12:15:22,030 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 [2021-12-21 12:15:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:15:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:15:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 12:15:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-21 12:15:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-21 12:15:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:15:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:15:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:15:22,124 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:15:22,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:15:22,312 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:15:22,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:15:22,319 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-21 12:15:22,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:15:22 BoogieIcfgContainer [2021-12-21 12:15:22,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:15:22,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:15:22,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:15:22,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:15:22,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:15:21" (1/3) ... [2021-12-21 12:15:22,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3aa9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:15:22, skipping insertion in model container [2021-12-21 12:15:22,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:15:21" (2/3) ... [2021-12-21 12:15:22,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3aa9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:15:22, skipping insertion in model container [2021-12-21 12:15:22,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:15:22" (3/3) ... [2021-12-21 12:15:22,349 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-12-21 12:15:22,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:15:22,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:15:22,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:15:22,409 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, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:15:22,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:15:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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) [2021-12-21 12:15:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 12:15:22,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:15:22,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:15:22,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:15:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:15:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2021-12-21 12:15:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:15:22,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555109464] [2021-12-21 12:15:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:22,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:15:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:15:22,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:15:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555109464] [2021-12-21 12:15:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555109464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:15:22,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:15:22,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 12:15:22,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031688479] [2021-12-21 12:15:22,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:15:22,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:15:22,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:15:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:15:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:15:22,724 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 12:15:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:15:22,798 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2021-12-21 12:15:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 12:15:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-21 12:15:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:15:22,809 INFO L225 Difference]: With dead ends: 102 [2021-12-21 12:15:22,810 INFO L226 Difference]: Without dead ends: 17 [2021-12-21 12:15:22,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:15:22,821 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 67 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:15:22,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:15:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-21 12:15:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-12-21 12:15:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-12-21 12:15:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-21 12:15:22,854 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-12-21 12:15:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:15:22,855 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-21 12:15:22,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 12:15:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-21 12:15:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:15:22,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:15:22,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:15:22,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:15:22,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:15:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:15:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2021-12-21 12:15:22,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:15:22,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467601012] [2021-12-21 12:15:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:22,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:15:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 12:15:22,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:15:22,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467601012] [2021-12-21 12:15:22,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467601012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:15:22,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:15:22,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 12:15:22,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213881023] [2021-12-21 12:15:22,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:15:22,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:15:22,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:15:22,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:15:22,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:15:22,961 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-12-21 12:15:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:15:22,994 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-12-21 12:15:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:15:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-12-21 12:15:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:15:22,995 INFO L225 Difference]: With dead ends: 26 [2021-12-21 12:15:22,995 INFO L226 Difference]: Without dead ends: 24 [2021-12-21 12:15:22,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:15:22,997 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:15:22,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:15:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-21 12:15:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-12-21 12:15:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-12-21 12:15:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-21 12:15:23,003 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2021-12-21 12:15:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:15:23,004 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-21 12:15:23,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-12-21 12:15:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-21 12:15:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 12:15:23,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:15:23,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:15:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:15:23,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:15:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:15:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2121905774, now seen corresponding path program 1 times [2021-12-21 12:15:23,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:15:23,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418275003] [2021-12-21 12:15:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:15:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:15:23,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:15:23,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418275003] [2021-12-21 12:15:23,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418275003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:15:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138212872] [2021-12-21 12:15:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:23,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:15:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:15:23,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:15:23,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:15:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:15:23,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:15:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:15:23,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:15:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:15:23,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138212872] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:15:23,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:15:23,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-12-21 12:15:23,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611329179] [2021-12-21 12:15:23,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:15:23,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 12:15:23,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:15:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 12:15:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:15:23,466 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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) [2021-12-21 12:15:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:15:23,771 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2021-12-21 12:15:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 12:15:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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 21 [2021-12-21 12:15:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:15:23,773 INFO L225 Difference]: With dead ends: 84 [2021-12-21 12:15:23,774 INFO L226 Difference]: Without dead ends: 70 [2021-12-21 12:15:23,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2021-12-21 12:15:23,775 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 193 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:15:23,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 32 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:15:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-21 12:15:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-12-21 12:15:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 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) [2021-12-21 12:15:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2021-12-21 12:15:23,786 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 21 [2021-12-21 12:15:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:15:23,787 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2021-12-21 12:15:23,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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) [2021-12-21 12:15:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2021-12-21 12:15:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 12:15:23,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:15:23,789 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-12-21 12:15:23,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:15:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:15:24,004 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:15:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:15:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash -139112542, now seen corresponding path program 1 times [2021-12-21 12:15:24,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:15:24,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319364169] [2021-12-21 12:15:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:24,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:15:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-21 12:15:24,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:15:24,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319364169] [2021-12-21 12:15:24,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319364169] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:15:24,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788419487] [2021-12-21 12:15:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:15:24,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:15:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:15:24,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:15:24,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:15:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:15:24,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:15:24,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:15:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-21 12:15:24,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:15:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-21 12:15:24,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788419487] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:15:24,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:15:24,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2021-12-21 12:15:24,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146971643] [2021-12-21 12:15:24,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:15:24,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 12:15:24,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:15:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 12:15:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:15:24,814 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2021-12-21 12:15:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:15:25,141 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2021-12-21 12:15:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 12:15:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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 67 [2021-12-21 12:15:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:15:25,142 INFO L225 Difference]: With dead ends: 205 [2021-12-21 12:15:25,142 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 12:15:25,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2021-12-21 12:15:25,149 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 137 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:15:25,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 26 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:15:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 12:15:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 12:15:25,155 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) [2021-12-21 12:15:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 12:15:25,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2021-12-21 12:15:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:15:25,156 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 12:15:25,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2021-12-21 12:15:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 12:15:25,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 12:15:25,159 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:15:25,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:15:25,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 12:15:25,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 12:15:25,606 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L854 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (= 5 |ULTIMATE.start_main_~n~0#1|))) (or (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0)))) [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L854 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L854 garLoopResultBuilder]: At program point L153(lines 111 155) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2021-12-21 12:15:25,607 INFO L858 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L854 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,608 INFO L854 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (= 5 |ULTIMATE.start_main_~n~0#1|))) (or (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0)))) [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L854 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2021-12-21 12:15:25,608 INFO L854 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,608 INFO L858 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L854 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L854 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (= 5 |ULTIMATE.start_main_~n~0#1|) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 12:15:25,609 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-12-21 12:15:25,610 INFO L854 garLoopResultBuilder]: At program point L82(lines 76 83) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,610 INFO L858 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-12-21 12:15:25,610 INFO L858 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L854 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-12-21 12:15:25,611 INFO L858 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2021-12-21 12:15:25,612 INFO L854 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,612 INFO L858 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2021-12-21 12:15:25,612 INFO L854 garLoopResultBuilder]: At program point L108(lines 85 109) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,612 INFO L858 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2021-12-21 12:15:25,612 INFO L854 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,612 INFO L858 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2021-12-21 12:15:25,612 INFO L858 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2021-12-21 12:15:25,612 INFO L854 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2021-12-21 12:15:25,612 INFO L858 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-12-21 12:15:25,615 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-21 12:15:25,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:15:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:15:25 BoogieIcfgContainer [2021-12-21 12:15:25,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:15:25,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:15:25,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:15:25,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:15:25,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:15:22" (3/4) ... [2021-12-21 12:15:25,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 12:15:25,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-21 12:15:25,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-21 12:15:25,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 12:15:25,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 12:15:25,705 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 12:15:25,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:15:25,706 INFO L158 Benchmark]: Toolchain (without parser) took 4114.50ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 43.8MB in the beginning and 65.6MB in the end (delta: -21.8MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,707 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 93.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:15:25,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.21ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 51.3MB in the end (delta: -7.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.88ms. Allocated memory is still 79.7MB. Free memory was 51.3MB in the beginning and 49.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,708 INFO L158 Benchmark]: Boogie Preprocessor took 29.84ms. Allocated memory is still 79.7MB. Free memory was 49.0MB in the beginning and 47.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,708 INFO L158 Benchmark]: RCFGBuilder took 362.52ms. Allocated memory is still 79.7MB. Free memory was 46.9MB in the beginning and 32.0MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,708 INFO L158 Benchmark]: TraceAbstraction took 3293.55ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 81.1MB in the beginning and 70.7MB in the end (delta: 10.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,709 INFO L158 Benchmark]: Witness Printer took 71.00ms. Allocated memory is still 125.8MB. Free memory was 70.7MB in the beginning and 65.6MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 12:15:25,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 93.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.21ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 51.3MB in the end (delta: -7.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.88ms. Allocated memory is still 79.7MB. Free memory was 51.3MB in the beginning and 49.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.84ms. Allocated memory is still 79.7MB. Free memory was 49.0MB in the beginning and 47.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.52ms. Allocated memory is still 79.7MB. Free memory was 46.9MB in the beginning and 32.0MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3293.55ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 81.1MB in the beginning and 70.7MB in the end (delta: 10.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Witness Printer took 71.00ms. Allocated memory is still 125.8MB. Free memory was 70.7MB in the beginning and 65.6MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 7]: 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, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 82 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=3, InterpolantAutomatonStates: 45, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 68 NumberOfFragments, 106 HoareAnnotationTreeSize, 15 FomulaSimplifications, 450 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 580 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 885 SizeOfPredicates, 4 NumberOfNonLiveVariables, 456 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 907/979 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: 5]: Loop Invariant Derived loop invariant: (5 == n && !(cond == 0)) && i <= n - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: (5 == n && !(cond == 0)) || (5 == n && i == 0) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: ((5 == n && !(cond == 0)) && i <= n) || (5 == n && i == 0) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: n + -5 == 0 RESULT: Ultimate proved your program to be correct! [2021-12-21 12:15:25,751 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 Result: TRUE