./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/sanfoundry_24-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/sanfoundry_24-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0a16588b251f5de7b3febde43795c7086835cc989637b8bd82aa8d6af355c6b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 09:25:30,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 09:25:30,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 09:25:30,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 09:25:30,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 09:25:30,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 09:25:30,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 09:25:30,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 09:25:30,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 09:25:30,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 09:25:30,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 09:25:30,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 09:25:30,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 09:25:30,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 09:25:30,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 09:25:30,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 09:25:30,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 09:25:30,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 09:25:30,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 09:25:30,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 09:25:30,407 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 09:25:30,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 09:25:30,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 09:25:30,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 09:25:30,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 09:25:30,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 09:25:30,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 09:25:30,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 09:25:30,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 09:25:30,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 09:25:30,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 09:25:30,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 09:25:30,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 09:25:30,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 09:25:30,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 09:25:30,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 09:25:30,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 09:25:30,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 09:25:30,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 09:25:30,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 09:25:30,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 09:25:30,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 09:25:30,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 09:25:30,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 09:25:30,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 09:25:30,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 09:25:30,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 09:25:30,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 09:25:30,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 09:25:30,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 09:25:30,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 09:25:30,466 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 09:25:30,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 09:25:30,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 09:25:30,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 09:25:30,469 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 09:25:30,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 09:25:30,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 09:25:30,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 09:25:30,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 09:25:30,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 09:25:30,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 09:25:30,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:25:30,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 09:25:30,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 09:25:30,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 09:25:30,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 09:25:30,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 09:25:30,472 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 09:25:30,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 09:25:30,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 09:25:30,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a16588b251f5de7b3febde43795c7086835cc989637b8bd82aa8d6af355c6b [2022-07-13 09:25:30,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 09:25:30,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 09:25:30,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 09:25:30,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 09:25:30,719 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 09:25:30,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2022-07-13 09:25:30,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d890424f/85c21e38be45472e80eb58b00453859d/FLAGf2081f54c [2022-07-13 09:25:31,175 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 09:25:31,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2022-07-13 09:25:31,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d890424f/85c21e38be45472e80eb58b00453859d/FLAGf2081f54c [2022-07-13 09:25:31,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d890424f/85c21e38be45472e80eb58b00453859d [2022-07-13 09:25:31,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 09:25:31,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 09:25:31,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 09:25:31,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 09:25:31,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 09:25:31,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102f04fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31, skipping insertion in model container [2022-07-13 09:25:31,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 09:25:31,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 09:25:31,760 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/array-examples/sanfoundry_24-1.i[848,861] [2022-07-13 09:25:31,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:25:31,789 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 09:25:31,804 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/array-examples/sanfoundry_24-1.i[848,861] [2022-07-13 09:25:31,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:25:31,831 INFO L208 MainTranslator]: Completed translation [2022-07-13 09:25:31,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31 WrapperNode [2022-07-13 09:25:31,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 09:25:31,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 09:25:31,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 09:25:31,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 09:25:31,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,885 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-07-13 09:25:31,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 09:25:31,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 09:25:31,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 09:25:31,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 09:25:31,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 09:25:31,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 09:25:31,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 09:25:31,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 09:25:31,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:25:31,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:25:31,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 09:25:31,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 09:25:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 09:25:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 09:25:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 09:25:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 09:25:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 09:25:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 09:25:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 09:25:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 09:25:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 09:25:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 09:25:32,059 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 09:25:32,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 09:25:32,170 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 09:25:32,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 09:25:32,177 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 09:25:32,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:32 BoogieIcfgContainer [2022-07-13 09:25:32,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 09:25:32,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 09:25:32,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 09:25:32,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 09:25:32,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:25:31" (1/3) ... [2022-07-13 09:25:32,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1750c8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:32, skipping insertion in model container [2022-07-13 09:25:32,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (2/3) ... [2022-07-13 09:25:32,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1750c8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:32, skipping insertion in model container [2022-07-13 09:25:32,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:32" (3/3) ... [2022-07-13 09:25:32,193 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2022-07-13 09:25:32,203 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 09:25:32,203 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 09:25:32,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 09:25:32,246 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ee0e825, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@233e241d [2022-07-13 09:25:32,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 09:25:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 09:25:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 09:25:32,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1970177477, now seen corresponding path program 1 times [2022-07-13 09:25:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265520114] [2022-07-13 09:25:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:25:32,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265520114] [2022-07-13 09:25:32,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265520114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:32,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:32,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 09:25:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091478920] [2022-07-13 09:25:32,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:32,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 09:25:32,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 09:25:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 09:25:32,532 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:32,658 INFO L93 Difference]: Finished difference Result 68 states and 101 transitions. [2022-07-13 09:25:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 09:25:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 09:25:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:32,668 INFO L225 Difference]: With dead ends: 68 [2022-07-13 09:25:32,668 INFO L226 Difference]: Without dead ends: 34 [2022-07-13 09:25:32,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 09:25:32,674 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:32,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:25:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-13 09:25:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2022-07-13 09:25:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 09:25:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-07-13 09:25:32,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 10 [2022-07-13 09:25:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,724 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-07-13 09:25:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-07-13 09:25:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 09:25:32,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 09:25:32,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1314979911, now seen corresponding path program 1 times [2022-07-13 09:25:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912531346] [2022-07-13 09:25:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 09:25:32,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912531346] [2022-07-13 09:25:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912531346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:32,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:32,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 09:25:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725116036] [2022-07-13 09:25:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:32,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 09:25:32,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:32,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 09:25:32,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 09:25:32,852 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:32,946 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-07-13 09:25:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 09:25:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-13 09:25:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:32,948 INFO L225 Difference]: With dead ends: 39 [2022-07-13 09:25:32,949 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 09:25:32,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 09:25:32,952 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:32,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:25:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 09:25:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-07-13 09:25:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 09:25:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-13 09:25:32,964 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2022-07-13 09:25:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,965 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-13 09:25:32,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-13 09:25:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 09:25:32,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 09:25:32,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -663653835, now seen corresponding path program 1 times [2022-07-13 09:25:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167259202] [2022-07-13 09:25:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 09:25:33,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:33,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167259202] [2022-07-13 09:25:33,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167259202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:33,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:33,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 09:25:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161687439] [2022-07-13 09:25:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:33,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 09:25:33,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 09:25:33,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 09:25:33,078 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:33,128 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-07-13 09:25:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 09:25:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-13 09:25:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:33,129 INFO L225 Difference]: With dead ends: 31 [2022-07-13 09:25:33,129 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 09:25:33,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 09:25:33,131 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:33,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 96 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:25:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 09:25:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 09:25:33,132 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) [2022-07-13 09:25:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 09:25:33,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-07-13 09:25:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:33,133 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 09:25:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 09:25:33,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 09:25:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 09:25:33,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 09:25:33,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 09:25:33,150 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2022-07-13 09:25:33,150 INFO L902 garLoopResultBuilder]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2022-07-13 09:25:33,151 INFO L899 garLoopResultBuilder]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2022-07-13 09:25:33,151 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (not (= (* (div |ULTIMATE.start_printOdd_~i#1| 2) 2) |ULTIMATE.start_printOdd_~i#1|)) [2022-07-13 09:25:33,151 INFO L899 garLoopResultBuilder]: For program point L19-1(lines 18 20) no Hoare annotation was computed. [2022-07-13 09:25:33,151 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 09:25:33,151 INFO L899 garLoopResultBuilder]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2022-07-13 09:25:33,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 09:25:33,152 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2022-07-13 09:25:33,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 09:25:33,152 INFO L899 garLoopResultBuilder]: For program point L32-4(lines 32 38) no Hoare annotation was computed. [2022-07-13 09:25:33,152 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (<= |ULTIMATE.start_printEven_~i#1| (* (div |ULTIMATE.start_printEven_~i#1| 2) 2)) [2022-07-13 09:25:33,152 INFO L899 garLoopResultBuilder]: For program point L16-1(lines 15 17) no Hoare annotation was computed. [2022-07-13 09:25:33,152 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 44) no Hoare annotation was computed. [2022-07-13 09:25:33,153 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 09:25:33,153 INFO L902 garLoopResultBuilder]: At program point L46(lines 21 47) the Hoare annotation is: true [2022-07-13 09:25:33,153 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 37) no Hoare annotation was computed. [2022-07-13 09:25:33,153 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2022-07-13 09:25:33,153 INFO L902 garLoopResultBuilder]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2022-07-13 09:25:33,154 INFO L899 garLoopResultBuilder]: For program point L39-4(lines 39 45) no Hoare annotation was computed. [2022-07-13 09:25:33,154 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 14) the Hoare annotation is: true [2022-07-13 09:25:33,154 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2022-07-13 09:25:33,154 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2022-07-13 09:25:33,154 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2022-07-13 09:25:33,154 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 14) no Hoare annotation was computed. [2022-07-13 09:25:33,155 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-07-13 09:25:33,158 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 09:25:33,159 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 09:25:33,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:25:33 BoogieIcfgContainer [2022-07-13 09:25:33,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 09:25:33,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 09:25:33,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 09:25:33,168 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 09:25:33,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:32" (3/4) ... [2022-07-13 09:25:33,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 09:25:33,176 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 09:25:33,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-13 09:25:33,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 09:25:33,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 09:25:33,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 09:25:33,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 09:25:33,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 09:25:33,208 INFO L158 Benchmark]: Toolchain (without parser) took 1610.07ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 63.2MB in the beginning and 47.6MB in the end (delta: 15.6MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,209 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 09:25:33,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.69ms. Allocated memory is still 94.4MB. Free memory was 63.0MB in the beginning and 69.3MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.16ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 67.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,210 INFO L158 Benchmark]: Boogie Preprocessor took 46.18ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 66.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 09:25:33,210 INFO L158 Benchmark]: RCFGBuilder took 246.41ms. Allocated memory is still 94.4MB. Free memory was 66.5MB in the beginning and 56.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,210 INFO L158 Benchmark]: TraceAbstraction took 985.82ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 49.7MB in the end (delta: 5.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,211 INFO L158 Benchmark]: Witness Printer took 40.26ms. Allocated memory is still 113.2MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 09:25:33,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.69ms. Allocated memory is still 94.4MB. Free memory was 63.0MB in the beginning and 69.3MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.16ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 67.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.18ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 66.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.41ms. Allocated memory is still 94.4MB. Free memory was 66.5MB in the beginning and 56.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 985.82ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 49.7MB in the end (delta: 5.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Witness Printer took 40.26ms. Allocated memory is still 113.2MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 222 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 81 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 20, 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, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 21 NumberOfFragments, 20 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 09:25:33,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE