./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/lu.cmp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/lu.cmp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:06:30,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:06:30,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:06:30,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:06:30,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:06:30,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:06:30,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:06:30,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:06:30,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:06:30,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:06:30,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:06:30,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:06:30,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:06:30,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:06:30,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:06:30,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:06:30,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:06:30,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:06:30,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:06:30,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:06:30,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:06:30,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:06:30,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:06:30,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:06:30,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:06:30,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:06:30,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:06:30,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:06:30,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:06:30,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:06:30,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:06:30,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:06:30,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:06:30,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:06:30,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:06:30,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:06:30,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:06:30,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:06:30,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:06:30,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:06:30,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:06:30,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:06:30,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:06:30,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:06:30,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:06:30,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:06:30,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:06:30,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:06:30,654 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:06:30,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:06:30,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:06:30,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:06:30,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:06:30,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:06:30,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:06:30,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:06:30,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:06:30,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:06:30,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:06:30,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:06:30,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:06:30,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:06:30,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:06:30,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:06:30,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:06:30,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:06:30,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:06:30,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:06:30,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:06:30,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:06:30,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:06:30,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:06:30,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 [2021-08-26 03:06:30,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:06:30,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:06:30,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:06:30,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:06:30,972 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:06:30,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2021-08-26 03:06:31,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4909b68/c78f2428941242f68266e9d02e148453/FLAGbdb1ecf1a [2021-08-26 03:06:31,471 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:06:31,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2021-08-26 03:06:31,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4909b68/c78f2428941242f68266e9d02e148453/FLAGbdb1ecf1a [2021-08-26 03:06:31,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4909b68/c78f2428941242f68266e9d02e148453 [2021-08-26 03:06:31,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:06:31,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:06:31,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:06:31,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:06:31,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:06:31,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1f8e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31, skipping insertion in model container [2021-08-26 03:06:31,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:06:31,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:06:31,641 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-08-26 03:06:31,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:06:31,740 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:06:31,747 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-08-26 03:06:31,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:06:31,797 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:06:31,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31 WrapperNode [2021-08-26 03:06:31,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:06:31,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:06:31,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:06:31,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:06:31,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:06:31,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:06:31,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:06:31,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:06:31,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:06:31,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:06:31,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:06:31,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:06:31,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (1/1) ... [2021-08-26 03:06:31,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:06:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:06:31,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 03:06:31,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 03:06:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:06:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:06:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 03:06:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 03:06:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:06:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:06:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:06:32,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:06:32,503 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-26 03:06:32,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:06:32 BoogieIcfgContainer [2021-08-26 03:06:32,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:06:32,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:06:32,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:06:32,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:06:32,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:06:31" (1/3) ... [2021-08-26 03:06:32,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6084f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:06:32, skipping insertion in model container [2021-08-26 03:06:32,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:06:31" (2/3) ... [2021-08-26 03:06:32,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6084f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:06:32, skipping insertion in model container [2021-08-26 03:06:32,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:06:32" (3/3) ... [2021-08-26 03:06:32,511 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-08-26 03:06:32,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:06:32,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:06:32,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:06:32,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 03:06:32,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:06:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 03:06:32,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:06:32,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:06:32,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:06:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:06:32,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2021-08-26 03:06:32,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:06:32,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817156870] [2021-08-26 03:06:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:32,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:06:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:06:32,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:06:32,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817156870] [2021-08-26 03:06:32,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817156870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:06:32,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:06:32,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:06:32,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111614883] [2021-08-26 03:06:32,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:06:32,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:06:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:06:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:06:32,776 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:06:32,859 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2021-08-26 03:06:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:06:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-26 03:06:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:06:32,866 INFO L225 Difference]: With dead ends: 102 [2021-08-26 03:06:32,866 INFO L226 Difference]: Without dead ends: 17 [2021-08-26 03:06:32,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:06:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-26 03:06:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-08-26 03:06:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-26 03:06:32,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-08-26 03:06:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:06:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-26 03:06:32,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-08-26 03:06:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 03:06:32,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:06:32,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:06:32,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:06:32,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:06:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:06:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2021-08-26 03:06:32,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:06:32,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629115278] [2021-08-26 03:06:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:32,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:06:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 03:06:32,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:06:32,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629115278] [2021-08-26 03:06:32,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629115278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:06:32,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:06:32,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:06:32,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286472203] [2021-08-26 03:06:32,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:06:32,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:06:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:06:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:06:32,980 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:06:33,044 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-08-26 03:06:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:06:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 03:06:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:06:33,045 INFO L225 Difference]: With dead ends: 26 [2021-08-26 03:06:33,046 INFO L226 Difference]: Without dead ends: 24 [2021-08-26 03:06:33,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:06:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-26 03:06:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-08-26 03:06:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-08-26 03:06:33,050 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2021-08-26 03:06:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:06:33,051 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-08-26 03:06:33,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-08-26 03:06:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 03:06:33,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:06:33,052 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:06:33,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:06:33,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:06:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:06:33,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2121905774, now seen corresponding path program 1 times [2021-08-26 03:06:33,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:06:33,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35402903] [2021-08-26 03:06:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:33,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:06:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 03:06:33,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:06:33,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35402903] [2021-08-26 03:06:33,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35402903] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:06:33,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108268543] [2021-08-26 03:06:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:33,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:06:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:06:33,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:06:33,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:06:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:33,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 03:06:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:06:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 03:06:33,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108268543] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:06:33,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:06:33,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-08-26 03:06:33,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26922320] [2021-08-26 03:06:33,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 03:06:33,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:06:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 03:06:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 03:06:33,615 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:06:33,980 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2021-08-26 03:06:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 03:06:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 03:06:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:06:33,985 INFO L225 Difference]: With dead ends: 69 [2021-08-26 03:06:33,985 INFO L226 Difference]: Without dead ends: 55 [2021-08-26 03:06:33,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 256.7ms TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-08-26 03:06:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-26 03:06:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-08-26 03:06:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2021-08-26 03:06:34,005 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 21 [2021-08-26 03:06:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:06:34,006 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2021-08-26 03:06:34,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2021-08-26 03:06:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-26 03:06:34,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:06:34,007 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-08-26 03:06:34,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:06:34,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:06:34,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:06:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:06:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash -586774340, now seen corresponding path program 1 times [2021-08-26 03:06:34,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:06:34,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372693712] [2021-08-26 03:06:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:34,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:06:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-08-26 03:06:34,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:06:34,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372693712] [2021-08-26 03:06:34,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372693712] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:06:34,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751287834] [2021-08-26 03:06:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:06:34,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:06:34,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:06:34,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:06:34,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:06:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:06:34,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 03:06:34,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:06:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-08-26 03:06:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751287834] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:06:34,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:06:34,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-08-26 03:06:34,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297310701] [2021-08-26 03:06:34,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 03:06:34,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:06:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 03:06:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 03:06:34,827 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:06:35,073 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2021-08-26 03:06:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 03:06:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 43 [2021-08-26 03:06:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:06:35,074 INFO L225 Difference]: With dead ends: 104 [2021-08-26 03:06:35,074 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:06:35,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 215.6ms TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-08-26 03:06:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:06:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:06:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:06:35,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-08-26 03:06:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:06:35,076 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:06:35,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:06:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:06:35,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:06:35,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:06:35,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:06:35,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-26 03:06:35,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:06:35,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:06:35,469 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2021-08-26 03:06:35,469 INFO L853 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 5)) (.cse1 (<= 5 ULTIMATE.start_main_~n~0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1) (and .cse0 .cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-08-26 03:06:35,469 INFO L857 garLoopResultBuilder]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2021-08-26 03:06:35,469 INFO L857 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2021-08-26 03:06:35,469 INFO L853 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,470 INFO L857 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2021-08-26 03:06:35,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:06:35,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:06:35,474 INFO L853 garLoopResultBuilder]: At program point L153(lines 111 155) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,474 INFO L857 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2021-08-26 03:06:35,474 INFO L857 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2021-08-26 03:06:35,474 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2021-08-26 03:06:35,475 INFO L853 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,475 INFO L853 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 5)) (.cse1 (<= 5 ULTIMATE.start_main_~n~0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~i~0 5) .cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-08-26 03:06:35,475 INFO L857 garLoopResultBuilder]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2021-08-26 03:06:35,475 INFO L857 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2021-08-26 03:06:35,476 INFO L853 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,478 INFO L857 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2021-08-26 03:06:35,478 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2021-08-26 03:06:35,478 INFO L857 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2021-08-26 03:06:35,478 INFO L853 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,479 INFO L857 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2021-08-26 03:06:35,480 INFO L857 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2021-08-26 03:06:35,480 INFO L857 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2021-08-26 03:06:35,481 INFO L853 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,481 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-26 03:06:35,482 INFO L857 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2021-08-26 03:06:35,482 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 5) (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-26 03:06:35,482 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-26 03:06:35,482 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:06:35,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-26 03:06:35,482 INFO L853 garLoopResultBuilder]: At program point L82(lines 76 83) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,482 INFO L857 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-08-26 03:06:35,483 INFO L857 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2021-08-26 03:06:35,483 INFO L857 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2021-08-26 03:06:35,483 INFO L853 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L857 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L857 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L853 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,484 INFO L857 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2021-08-26 03:06:35,484 INFO L853 garLoopResultBuilder]: At program point L108(lines 85 109) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,485 INFO L857 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2021-08-26 03:06:35,485 INFO L853 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,485 INFO L857 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2021-08-26 03:06:35,485 INFO L857 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2021-08-26 03:06:35,485 INFO L853 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-08-26 03:06:35,485 INFO L857 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-08-26 03:06:35,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:06:35,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:06:35 BoogieIcfgContainer [2021-08-26 03:06:35,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:06:35,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:06:35,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:06:35,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:06:35,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:06:32" (3/4) ... [2021-08-26 03:06:35,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:06:35,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-26 03:06:35,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-26 03:06:35,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:06:35,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:06:35,582 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:06:35,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:06:35,584 INFO L168 Benchmark]: Toolchain (without parser) took 4084.61 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.5 MB in the beginning and 34.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,585 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:06:35,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.83 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.3 MB in the beginning and 53.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 50.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,586 INFO L168 Benchmark]: Boogie Preprocessor took 52.59 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,586 INFO L168 Benchmark]: RCFGBuilder took 594.62 ms. Allocated memory is still 71.3 MB. Free memory was 49.0 MB in the beginning and 38.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,587 INFO L168 Benchmark]: TraceAbstraction took 3000.78 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.4 MB in the beginning and 39.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,587 INFO L168 Benchmark]: Witness Printer took 75.70 ms. Allocated memory is still 86.0 MB. Free memory was 39.5 MB in the beginning and 34.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:06:35,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.83 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.3 MB in the beginning and 53.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 50.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.59 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 594.62 ms. Allocated memory is still 71.3 MB. Free memory was 49.0 MB in the beginning and 38.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3000.78 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.4 MB in the beginning and 39.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Witness Printer took 75.70 ms. Allocated memory is still 86.0 MB. Free memory was 39.5 MB in the beginning and 34.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2928.5ms, OverallIterations: 4, TraceHistogramMax: 6, EmptinessCheckTime: 8.7ms, AutomataDifference: 797.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 165.1ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 277 SDslu, 101 SDs, 0 SdLazy, 167 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 508.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 45 NumberOfFragments, 97 HoareAnnotationTreeSize, 15 FomulaSimplifications, 328 FormulaSimplificationTreeSizeReduction, 40.3ms HoareSimplificationTime, 15 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 118.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 77.4ms SsaConstructionTime, 170.7ms SatisfiabilityAnalysisTime, 944.1ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 4 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 146/209 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((n <= 5 && i <= 5) && 5 <= n) && !(0 == cond) - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: ((n <= 5 && i == 0) && 5 <= n) || ((n <= 5 && 5 <= n) && !(0 == cond)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: ((n <= 5 && i == 0) && 5 <= n) || (((n <= 5 && i <= 5) && 5 <= n) && !(0 == cond)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 5 <= n RESULT: Ultimate proved your program to be correct! [2021-08-26 03:06:35,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...