./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark02_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark02_linear.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 a49557d960d757ebc59691c53a34969948d685fd24f146c763d0c70a84ed86eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:58:35,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:58:35,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:58:35,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:58:35,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:58:35,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:58:35,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:58:35,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:58:35,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:58:35,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:58:35,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:58:35,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:58:35,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:58:35,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:58:35,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:58:35,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:58:35,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:58:35,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:58:35,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:58:35,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:58:35,381 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:58:35,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:58:35,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:58:35,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:58:35,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:58:35,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:58:35,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:58:35,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:58:35,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:58:35,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:58:35,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:58:35,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:58:35,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:58:35,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:58:35,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:58:35,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:58:35,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:58:35,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:58:35,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:58:35,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:58:35,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:58:35,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:58:35,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:58:35,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:58:35,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:58:35,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:58:35,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:58:35,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:58:35,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:58:35,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:58:35,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:58:35,450 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:58:35,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:58:35,451 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:58:35,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:58:35,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:58:35,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:58:35,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:58:35,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:58:35,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:58:35,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:58:35,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:58:35,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:58:35,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:58:35,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:58:35,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:58:35,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:58:35,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:58:35,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:58:35,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:58:35,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:58:35,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:58:35,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:58:35,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:58:35,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:58:35,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:58:35,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49557d960d757ebc59691c53a34969948d685fd24f146c763d0c70a84ed86eb [2022-07-21 02:58:35,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:58:35,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:58:35,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:58:35,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:58:35,849 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:58:35,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark02_linear.i [2022-07-21 02:58:35,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b66023f0/05924b74d66e4a9592733a29f84d612e/FLAG173220a01 [2022-07-21 02:58:36,308 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:58:36,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark02_linear.i [2022-07-21 02:58:36,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b66023f0/05924b74d66e4a9592733a29f84d612e/FLAG173220a01 [2022-07-21 02:58:36,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b66023f0/05924b74d66e4a9592733a29f84d612e [2022-07-21 02:58:36,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:58:36,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:58:36,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:58:36,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:58:36,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:58:36,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9b8e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36, skipping insertion in model container [2022-07-21 02:58:36,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:58:36,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:58:36,880 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/loop-zilu/benchmark02_linear.i[868,881] [2022-07-21 02:58:36,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:58:36,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:58:36,918 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/loop-zilu/benchmark02_linear.i[868,881] [2022-07-21 02:58:36,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:58:36,943 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:58:36,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36 WrapperNode [2022-07-21 02:58:36,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:58:36,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:58:36,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:58:36,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:58:36,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,983 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-07-21 02:58:36,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:58:36,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:58:36,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:58:36,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:58:36,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:36,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:37,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:37,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:37,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:58:37,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:58:37,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:58:37,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:58:37,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (1/1) ... [2022-07-21 02:58:37,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:58:37,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:58:37,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:58:37,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:58:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:58:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:58:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:58:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:58:37,107 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:58:37,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:58:37,227 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:58:37,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:58:37,232 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:58:37,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:37 BoogieIcfgContainer [2022-07-21 02:58:37,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:58:37,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:58:37,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:58:37,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:58:37,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:58:36" (1/3) ... [2022-07-21 02:58:37,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b3b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:58:37, skipping insertion in model container [2022-07-21 02:58:37,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:36" (2/3) ... [2022-07-21 02:58:37,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b3b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:58:37, skipping insertion in model container [2022-07-21 02:58:37,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:37" (3/3) ... [2022-07-21 02:58:37,256 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark02_linear.i [2022-07-21 02:58:37,269 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:58:37,270 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:58:37,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:58:37,336 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@23ec267a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e5d58d [2022-07-21 02:58:37,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:58:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:58:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:58:37,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:37,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:37,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2022-07-21 02:58:37,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:37,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217476183] [2022-07-21 02:58:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:37,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217476183] [2022-07-21 02:58:37,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217476183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:58:37,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:58:37,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:58:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107734649] [2022-07-21 02:58:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:58:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:58:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:58:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:58:37,553 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-07-21 02:58:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:37,564 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-21 02:58:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:58:37,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-07-21 02:58:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:37,573 INFO L225 Difference]: With dead ends: 20 [2022-07-21 02:58:37,573 INFO L226 Difference]: Without dead ends: 8 [2022-07-21 02:58:37,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:58:37,581 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:58:37,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:58:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-21 02:58:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-21 02:58:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:58:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-21 02:58:37,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2022-07-21 02:58:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-21 02:58:37,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-07-21 02:58:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-21 02:58:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:58:37,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:37,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:58:37,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2022-07-21 02:58:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:37,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349908179] [2022-07-21 02:58:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:37,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349908179] [2022-07-21 02:58:37,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349908179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:58:37,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:58:37,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:58:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441301638] [2022-07-21 02:58:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:58:37,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:58:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:58:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:58:37,715 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. 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) [2022-07-21 02:58:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:37,746 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-07-21 02:58:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:58:37,767 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 [2022-07-21 02:58:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:37,768 INFO L225 Difference]: With dead ends: 8 [2022-07-21 02:58:37,768 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 02:58:37,768 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 [2022-07-21 02:58:37,770 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:58:37,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:58:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 02:58:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 02:58:37,771 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) [2022-07-21 02:58:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 02:58:37,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-07-21 02:58:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:37,772 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 02:58:37,772 INFO L496 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) [2022-07-21 02:58:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 02:58:37,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 02:58:37,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:58:37,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:58:37,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 02:58:37,788 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 02:58:37,788 INFO L902 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2022-07-21 02:58:37,789 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 27) the Hoare annotation is: (< 0 |ULTIMATE.start_main_~l~0#1|) [2022-07-21 02:58:37,789 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2022-07-21 02:58:37,789 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-21 02:58:37,789 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 02:58:37,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 02:58:37,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 02:58:37,790 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-07-21 02:58:37,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-21 02:58:37,795 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-21 02:58:37,796 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-07-21 02:58:37,799 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 02:58:37,800 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:58:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:58:37 BoogieIcfgContainer [2022-07-21 02:58:37,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:58:37,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:58:37,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:58:37,837 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:58:37,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:37" (3/4) ... [2022-07-21 02:58:37,840 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 02:58:37,850 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 02:58:37,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 02:58:37,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 02:58:37,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 02:58:37,889 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:58:37,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:58:37,893 INFO L158 Benchmark]: Toolchain (without parser) took 1145.00ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.5MB in the beginning and 51.7MB in the end (delta: -22.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:37,894 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:37,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.72ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.3MB in the beginning and 55.4MB in the end (delta: -26.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-07-21 02:58:37,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.37ms. Allocated memory is still 71.3MB. Free memory was 55.4MB in the beginning and 53.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:58:37,896 INFO L158 Benchmark]: Boogie Preprocessor took 24.21ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 52.9MB in the end (delta: 948.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:37,897 INFO L158 Benchmark]: RCFGBuilder took 224.36ms. Allocated memory is still 71.3MB. Free memory was 52.9MB in the beginning and 44.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 02:58:37,897 INFO L158 Benchmark]: TraceAbstraction took 588.28ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.4MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-07-21 02:58:37,898 INFO L158 Benchmark]: Witness Printer took 55.84ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 51.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:58:37,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.72ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.3MB in the beginning and 55.4MB in the end (delta: -26.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.37ms. Allocated memory is still 71.3MB. Free memory was 55.4MB in the beginning and 53.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.21ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 52.9MB in the end (delta: 948.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.36ms. Allocated memory is still 71.3MB. Free memory was 52.9MB in the beginning and 44.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 588.28ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.4MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 55.84ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 51.7MB in the end (delta: 2.4MB). 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: 16]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 < l - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 02:58:37,933 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