./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:49:50,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:49:50,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:49:50,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:49:50,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:49:50,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:49:50,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:49:50,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:49:50,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:49:50,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:49:50,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:49:50,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:49:50,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:49:50,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:49:50,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:49:50,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:49:50,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:49:50,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:49:50,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:49:50,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:49:50,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:49:50,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:49:50,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:49:50,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:49:50,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:49:50,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:49:50,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:49:50,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:49:50,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:49:50,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:49:50,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:49:50,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:49:50,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:49:50,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:49:50,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:49:50,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:49:50,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:49:50,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:49:50,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:49:50,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:49:50,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:49:50,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:49:50,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:49:50,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:49:50,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:49:50,844 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:49:50,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:49:50,845 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:49:50,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:49:50,845 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:49:50,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:49:50,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:49:50,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:49:50,847 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:49:50,848 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:49:50,848 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:49:50,848 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:49:50,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:49:50,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:49:50,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:49:50,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:49:50,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:49:50,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:49:50,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:49:50,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:49:50,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:49:50,852 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:49:50,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:49:50,852 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:49:50,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:49:50,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:49:50,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:49:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:50,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:49:50,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:49:50,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:49:50,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:49:50,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:49:50,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:49:50,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:49:50,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:49:50,858 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d [2021-10-29 04:49:51,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:49:51,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:49:51,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:49:51,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:49:51,199 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:49:51,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2021-10-29 04:49:51,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/data/1608a0d8b/6d3e3e00bdc841058707dc2ef553b069/FLAG125ba469f [2021-10-29 04:49:51,750 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:49:51,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2021-10-29 04:49:51,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/data/1608a0d8b/6d3e3e00bdc841058707dc2ef553b069/FLAG125ba469f [2021-10-29 04:49:52,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/data/1608a0d8b/6d3e3e00bdc841058707dc2ef553b069 [2021-10-29 04:49:52,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:49:52,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:49:52,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:52,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:49:52,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:49:52,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11315a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52, skipping insertion in model container [2021-10-29 04:49:52,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:49:52,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:49:52,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2021-10-29 04:49:52,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:52,399 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:49:52,414 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2021-10-29 04:49:52,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:52,439 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:49:52,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52 WrapperNode [2021-10-29 04:49:52,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:52,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:52,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:49:52,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:49:52,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:52,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:49:52,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:49:52,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:49:52,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:49:52,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:49:52,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:49:52,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:49:52,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (1/1) ... [2021-10-29 04:49:52,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:49:52,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:49:52,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:49:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:49:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:49:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:49:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:49:52,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:49:52,847 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 04:49:52,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:52 BoogieIcfgContainer [2021-10-29 04:49:52,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:49:52,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:49:52,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:49:52,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:49:52,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:49:52" (1/3) ... [2021-10-29 04:49:52,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330cd3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:52, skipping insertion in model container [2021-10-29 04:49:52,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:52" (2/3) ... [2021-10-29 04:49:52,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330cd3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:52, skipping insertion in model container [2021-10-29 04:49:52,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:52" (3/3) ... [2021-10-29 04:49:52,859 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2021-10-29 04:49:52,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:49:52,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:49:52,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:49:52,920 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-29 04:49:52,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 04:49:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 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) [2021-10-29 04:49:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:49:52,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:52,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:49:52,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 75328627, now seen corresponding path program 1 times [2021-10-29 04:49:52,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:52,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408039284] [2021-10-29 04:49:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:52,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:53,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:49:53,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408039284] [2021-10-29 04:49:53,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408039284] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:53,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:53,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:49:53,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963250188] [2021-10-29 04:49:53,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:49:53,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:49:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:49:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:49:53,233 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-29 04:49:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:53,287 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-10-29 04:49:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:49:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-29 04:49:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:53,297 INFO L225 Difference]: With dead ends: 27 [2021-10-29 04:49:53,297 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 04:49:53,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:49:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 04:49:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-29 04:49:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-29 04:49:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-29 04:49:53,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-29 04:49:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:53,336 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-29 04:49:53,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-29 04:49:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-29 04:49:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:49:53,337 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:53,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:53,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:49:53,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash -623477770, now seen corresponding path program 1 times [2021-10-29 04:49:53,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:53,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934347947] [2021-10-29 04:49:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:53,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:53,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:49:53,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934347947] [2021-10-29 04:49:53,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934347947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:53,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:53,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:49:53,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477519097] [2021-10-29 04:49:53,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:49:53,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:49:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:49:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:49:53,480 INFO L87 Difference]: Start difference. First operand 9 states and 9 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) [2021-10-29 04:49:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:53,529 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-29 04:49:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:49:53,529 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 [2021-10-29 04:49:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:53,530 INFO L225 Difference]: With dead ends: 16 [2021-10-29 04:49:53,532 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 04:49:53,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:49:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 04:49:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-29 04:49:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-29 04:49:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-29 04:49:53,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-29 04:49:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:53,543 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-29 04:49:53,543 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) [2021-10-29 04:49:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-29 04:49:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:49:53,545 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:53,545 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:53,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:49:53,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:53,548 INFO L85 PathProgramCache]: Analyzing trace with hash 405994558, now seen corresponding path program 1 times [2021-10-29 04:49:53,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:53,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035827472] [2021-10-29 04:49:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:53,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:53,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:49:53,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035827472] [2021-10-29 04:49:53,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035827472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:49:53,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359352135] [2021-10-29 04:49:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:53,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:49:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:49:53,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:49:53,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:49:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:53,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:49:53,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:54,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:54,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359352135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:49:54,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079125940] [2021-10-29 04:49:54,247 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 04:49:54,247 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:49:54,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:49:54,255 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:49:54,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:49:54,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,289 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:49:54,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:49:54,292 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:49:54,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:49:54,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:49:54,319 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-29 04:49:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:54,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:49:54,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:49:54,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:49:54,345 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:49:54,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:54,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:54,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:54,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:54,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:49:54,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:49:54,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:49:54,387 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:49:54,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,400 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:49:54,404 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:49:54,405 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-10-29 04:49:54,418 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.7 percent of original size [2021-10-29 04:49:54,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 04:49:54,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-10-29 04:49:54,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,562 INFO L180 QuantifierPusher]: treesize reduction 30, result has 77.3 percent of original size [2021-10-29 04:49:54,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:49:54,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:54,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 04:49:54,594 INFO L180 QuantifierPusher]: treesize reduction 30, result has 77.3 percent of original size [2021-10-29 04:49:54,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:49:54,605 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:49:55,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:49:55,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:49:55,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-10-29 04:49:55,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096514758] [2021-10-29 04:49:55,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:49:55,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:49:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:49:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-29 04:49:55,357 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-29 04:49:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:55,460 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-29 04:49:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 04:49:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 12 [2021-10-29 04:49:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:55,463 INFO L225 Difference]: With dead ends: 22 [2021-10-29 04:49:55,465 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 04:49:55,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-29 04:49:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 04:49:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-29 04:49:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-10-29 04:49:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-29 04:49:55,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2021-10-29 04:49:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:55,480 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-29 04:49:55,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-29 04:49:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-29 04:49:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:49:55,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:55,482 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-29 04:49:55,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:49:55,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:49:55,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1149015818, now seen corresponding path program 2 times [2021-10-29 04:49:55,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:55,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042818100] [2021-10-29 04:49:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:55,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 04:49:55,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:49:55,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042818100] [2021-10-29 04:49:55,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042818100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:49:55,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494003260] [2021-10-29 04:49:55,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:49:55,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:49:55,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:49:55,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:49:55,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:49:55,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-29 04:49:55,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:49:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:49:55,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 04:49:55,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 04:49:56,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494003260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:49:56,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2114251909] [2021-10-29 04:49:56,038 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 04:49:56,038 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:49:56,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:49:56,039 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:49:56,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:49:56,051 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,054 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:49:56,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:49:56,064 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:49:56,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:49:56,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:49:56,075 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-29 04:49:56,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:56,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:49:56,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:49:56,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:49:56,090 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:49:56,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:56,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:49:56,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:49:56,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:49:56,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:49:56,121 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:49:56,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:49:56,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:49:56,139 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-10-29 04:49:56,151 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.7 percent of original size [2021-10-29 04:49:56,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 04:49:56,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:49:56,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:56,250 INFO L180 QuantifierPusher]: treesize reduction 30, result has 77.3 percent of original size [2021-10-29 04:49:56,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:49:56,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:49:56,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 04:49:56,289 INFO L180 QuantifierPusher]: treesize reduction 30, result has 77.3 percent of original size [2021-10-29 04:49:56,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:49:56,303 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:49:57,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:49:57,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:49:57,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-10-29 04:49:57,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079651806] [2021-10-29 04:49:57,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:49:57,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:49:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:49:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:49:57,020 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-29 04:49:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:57,079 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-29 04:49:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:49:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 17 [2021-10-29 04:49:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:57,081 INFO L225 Difference]: With dead ends: 18 [2021-10-29 04:49:57,081 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:49:57,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:49:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:49:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:49:57,082 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) [2021-10-29 04:49:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:49:57,082 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-29 04:49:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:57,082 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:49:57,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-29 04:49:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:49:57,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:49:57,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:49:57,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:49:57,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:49:57,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:49:57,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:49:57,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:57,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:57,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:57,373 INFO L857 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-29 04:49:57,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:49:57,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:49:57,374 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-29 04:49:57,374 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-29 04:49:57,375 INFO L860 garLoopResultBuilder]: At program point L44(lines 25 45) the Hoare annotation is: true [2021-10-29 04:49:57,375 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) (.cse1 (<= 0 ULTIMATE.start_main_~glob2_p_off~0))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1) (and (<= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 .cse1 (< 0 ULTIMATE.start_main_~MAXPATHLEN~0)))) [2021-10-29 04:49:57,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:49:57,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:49:57,376 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:49:57,376 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-29 04:49:57,376 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:49:57,376 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 1 45) the Hoare annotation is: (and (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) [2021-10-29 04:49:57,380 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-10-29 04:49:57,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:49:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:49:57 BoogieIcfgContainer [2021-10-29 04:49:57,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:49:57,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:49:57,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:49:57,399 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:49:57,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:52" (3/4) ... [2021-10-29 04:49:57,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:49:57,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-29 04:49:57,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 04:49:57,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 04:49:57,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:49:57,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:49:57,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:49:57,456 INFO L168 Benchmark]: Toolchain (without parser) took 5331.95 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 49.8 MB in the beginning and 81.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,458 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:49:57,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.32 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 49.6 MB in the beginning and 78.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 76.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:49:57,460 INFO L168 Benchmark]: Boogie Preprocessor took 49.79 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 75.9 MB in the end (delta: 998.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,461 INFO L168 Benchmark]: RCFGBuilder took 320.29 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 65.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,461 INFO L168 Benchmark]: TraceAbstraction took 4545.73 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 65.1 MB in the beginning and 84.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,462 INFO L168 Benchmark]: Witness Printer took 56.90 ms. Allocated memory is still 136.3 MB. Free memory was 84.3 MB in the beginning and 81.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:57,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.32 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 49.6 MB in the beginning and 78.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 76.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.79 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 75.9 MB in the end (delta: 998.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 320.29 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 65.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4545.73 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 65.1 MB in the beginning and 84.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 56.90 ms. Allocated memory is still 136.3 MB. Free memory was 84.3 MB in the beginning and 81.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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, 0.0s 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 23 SDslu, 32 SDs, 0 SdLazy, 58 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 67 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 52 HoareAnnotationTreeSize, 4 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 13 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 21/51 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 2 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((glob2_p_off <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && !(0 == cond) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((glob2_p_off <= MAXPATHLEN && 1 <= cond) && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((1 <= cond && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) || (((glob2_p_off <= 0 && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && 0 < MAXPATHLEN) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:49:57,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639228de-1579-4de4-ace6-1bd5829e4904/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...