./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:02:58,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:02:58,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:02:58,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:02:58,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:02:58,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:02:58,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:02:58,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:02:58,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:02:58,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:02:58,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:02:58,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:02:58,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:02:58,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:02:58,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:02:58,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:02:58,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:02:58,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:02:58,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:02:58,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:02:58,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:02:58,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:02:58,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:02:58,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:02:58,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:02:58,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:02:58,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:02:58,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:02:58,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:02:58,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:02:58,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:02:58,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:02:58,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:02:58,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:02:58,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:02:58,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:02:58,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:02:58,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:02:58,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:02:58,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:02:58,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:02:58,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:02:58,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:02:58,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:02:58,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:02:58,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:02:58,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:02:58,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:02:58,349 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:02:58,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:02:58,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:02:58,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:02:58,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:02:58,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:02:58,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:02:58,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:02:58,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:02:58,354 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:02:58,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:02:58,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:02:58,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:02:58,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:02:58,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:02:58,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:02:58,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:02:58,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:02:58,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:02:58,358 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:02:58,360 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:02:58,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:02:58,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:02:58,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:02:58,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:02:58,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:02:58,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:02:58,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:58,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:02:58,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:02:58,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:02:58,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:02:58,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:02:58,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:02:58,365 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_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2021-11-12 23:02:58,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:02:58,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:02:58,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:02:58,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:02:58,782 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:02:58,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-11-12 23:02:58,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/696736def/c73e6c6049f5488781237a8b54a81051/FLAGd477bd890 [2021-11-12 23:02:59,633 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:02:59,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-11-12 23:02:59,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/696736def/c73e6c6049f5488781237a8b54a81051/FLAGd477bd890 [2021-11-12 23:02:59,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/696736def/c73e6c6049f5488781237a8b54a81051 [2021-11-12 23:02:59,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:02:59,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:02:59,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:59,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:02:59,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:02:59,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:59" (1/1) ... [2021-11-12 23:02:59,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70683e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:59, skipping insertion in model container [2021-11-12 23:02:59,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:59" (1/1) ... [2021-11-12 23:02:59,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:02:59,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:03:00,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:03:00,494 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:03:00,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:03:00,612 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:03:00,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00 WrapperNode [2021-11-12 23:03:00,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:03:00,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:03:00,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:03:00,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:03:00,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:03:00,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:03:00,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:03:00,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:03:00,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:03:00,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:03:00,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:03:00,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:03:00,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (1/1) ... [2021-11-12 23:03:00,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:03:00,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:00,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:03:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:03:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:03:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:03:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:03:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:03:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:03:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:03:01,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:03:01,318 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:03:01,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:01 BoogieIcfgContainer [2021-11-12 23:03:01,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:03:01,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:03:01,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:03:01,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:03:01,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:02:59" (1/3) ... [2021-11-12 23:03:01,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295ced99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:01, skipping insertion in model container [2021-11-12 23:03:01,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:00" (2/3) ... [2021-11-12 23:03:01,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295ced99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:01, skipping insertion in model container [2021-11-12 23:03:01,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:01" (3/3) ... [2021-11-12 23:03:01,354 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2021-11-12 23:03:01,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:03:01,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-12 23:03:01,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:03:01,436 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-12 23:03:01,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-12 23:03:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 2.272727272727273) internal successors, (25), 20 states have internal predecessors, (25), 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) [2021-11-12 23:03:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:03:01,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:01,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:03:01,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:01,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash 115767, now seen corresponding path program 1 times [2021-11-12 23:03:01,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:01,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041804669] [2021-11-12 23:03:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:01,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:01,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:01,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041804669] [2021-11-12 23:03:01,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041804669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:01,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:01,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:03:01,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146633220] [2021-11-12 23:03:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:01,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:03:01,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:03:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:01,769 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 2.272727272727273) internal successors, (25), 20 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 23:03:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:01,848 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-12 23:03:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:03:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-12 23:03:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:01,863 INFO L225 Difference]: With dead ends: 21 [2021-11-12 23:03:01,863 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 23:03:01,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:01,872 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:01,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 57.46ms Time] [2021-11-12 23:03:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 23:03:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 23:03:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 2.0) internal successors, (22), 19 states have internal predecessors, (22), 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) [2021-11-12 23:03:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-12 23:03:01,917 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 3 [2021-11-12 23:03:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:01,918 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-12 23:03:01,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 23:03:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-12 23:03:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:03:01,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:01,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:03:01,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:03:01,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash 3591225, now seen corresponding path program 1 times [2021-11-12 23:03:01,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:01,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053985022] [2021-11-12 23:03:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:02,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:02,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053985022] [2021-11-12 23:03:02,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053985022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:02,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:02,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:03:02,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878375142] [2021-11-12 23:03:02,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:02,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:03:02,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:03:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:02,028 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-12 23:03:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:02,067 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-12 23:03:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:03:02,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-12 23:03:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:02,069 INFO L225 Difference]: With dead ends: 16 [2021-11-12 23:03:02,069 INFO L226 Difference]: Without dead ends: 16 [2021-11-12 23:03:02,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:02,072 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:02,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 5 Invalid, 18 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 34.67ms Time] [2021-11-12 23:03:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-12 23:03:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-12 23:03:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 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) [2021-11-12 23:03:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-12 23:03:02,078 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 4 [2021-11-12 23:03:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:02,079 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-12 23:03:02,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-12 23:03:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-12 23:03:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:03:02,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:02,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:03:02,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:03:02,081 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 3591226, now seen corresponding path program 1 times [2021-11-12 23:03:02,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:02,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672813756] [2021-11-12 23:03:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:02,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:03:02,115 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:03:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:03:02,176 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:03:02,176 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:03:02,178 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 9 remaining) [2021-11-12 23:03:02,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (7 of 9 remaining) [2021-11-12 23:03:02,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 9 remaining) [2021-11-12 23:03:02,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 9 remaining) [2021-11-12 23:03:02,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 9 remaining) [2021-11-12 23:03:02,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 9 remaining) [2021-11-12 23:03:02,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (2 of 9 remaining) [2021-11-12 23:03:02,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-11-12 23:03:02,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-11-12 23:03:02,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:03:02,195 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:03:02,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:03:02,212 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:03:02,222 INFO L158 Benchmark]: Toolchain (without parser) took 2314.59ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 63.9MB in the beginning and 83.8MB in the end (delta: -19.9MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-12 23:03:02,223 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:02,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.79ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 63.8MB in the beginning and 94.8MB in the end (delta: -31.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:03:02,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.29ms. Allocated memory is still 125.8MB. Free memory was 94.8MB in the beginning and 93.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:03:02,225 INFO L158 Benchmark]: Boogie Preprocessor took 69.06ms. Allocated memory is still 125.8MB. Free memory was 93.0MB in the beginning and 91.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:02,229 INFO L158 Benchmark]: RCFGBuilder took 555.73ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 78.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:03:02,230 INFO L158 Benchmark]: TraceAbstraction took 898.15ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 83.8MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:02,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.79ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 63.8MB in the beginning and 94.8MB in the end (delta: -31.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.29ms. Allocated memory is still 125.8MB. Free memory was 94.8MB in the beginning and 93.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.06ms. Allocated memory is still 125.8MB. Free memory was 93.0MB in the beginning and 91.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 555.73ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 78.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 898.15ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 83.8MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:03:02,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:03:05,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:03:05,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:03:05,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:03:05,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:03:05,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:03:05,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:03:05,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:03:05,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:03:05,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:03:05,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:03:05,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:03:05,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:03:05,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:03:05,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:03:05,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:03:05,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:03:05,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:03:05,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:03:05,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:03:05,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:03:05,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:03:05,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:03:05,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:03:05,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:03:05,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:03:05,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:03:05,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:03:05,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:03:05,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:03:05,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:03:05,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:03:05,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:03:05,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:03:05,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:03:05,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:03:05,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:03:05,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:03:05,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:03:05,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:03:05,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:03:05,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:03:05,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:03:05,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:03:05,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:03:05,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:03:05,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:03:05,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:03:05,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:03:05,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:03:05,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:03:05,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:03:05,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:03:05,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:03:05,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:03:05,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:03:05,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:03:05,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:03:05,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:03:05,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:03:05,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:03:05,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:03:05,248 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:03:05,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:03:05,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:03:05,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:03:05,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:03:05,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:03:05,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:03:05,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:03:05,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:03:05,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:03:05,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:03:05,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:03:05,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:03:05,252 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:03:05,252 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:03:05,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:03:05,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:03:05,253 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2021-11-12 23:03:05,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:03:05,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:03:05,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:03:05,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:03:05,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:03:05,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-11-12 23:03:05,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/c5ac4c97d/239b75479aad479399eb5e61ad7f9962/FLAG4d25dd43c [2021-11-12 23:03:06,547 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:03:06,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-11-12 23:03:06,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/c5ac4c97d/239b75479aad479399eb5e61ad7f9962/FLAG4d25dd43c [2021-11-12 23:03:06,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/data/c5ac4c97d/239b75479aad479399eb5e61ad7f9962 [2021-11-12 23:03:06,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:03:06,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:03:06,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:03:06,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:03:06,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:03:06,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:03:06" (1/1) ... [2021-11-12 23:03:06,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c0dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:06, skipping insertion in model container [2021-11-12 23:03:06,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:03:06" (1/1) ... [2021-11-12 23:03:06,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:03:06,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:03:07,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:03:07,415 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:03:07,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:03:07,521 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:03:07,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07 WrapperNode [2021-11-12 23:03:07,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:03:07,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:03:07,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:03:07,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:03:07,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:03:07,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:03:07,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:03:07,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:03:07,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:03:07,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:03:07,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:03:07,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:03:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (1/1) ... [2021-11-12 23:03:07,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:03:07,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:07,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:03:07,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:03:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:03:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:03:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:03:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:03:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:03:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:03:08,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:03:08,149 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:03:08,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:08 BoogieIcfgContainer [2021-11-12 23:03:08,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:03:08,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:03:08,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:03:08,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:03:08,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:03:06" (1/3) ... [2021-11-12 23:03:08,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f5fe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:08, skipping insertion in model container [2021-11-12 23:03:08,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:03:07" (2/3) ... [2021-11-12 23:03:08,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f5fe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:08, skipping insertion in model container [2021-11-12 23:03:08,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:08" (3/3) ... [2021-11-12 23:03:08,161 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2021-11-12 23:03:08,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:03:08,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-12 23:03:08,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:03:08,233 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-12 23:03:08,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-12 23:03:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 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) [2021-11-12 23:03:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:03:08,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:08,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:03:08,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 889508774, now seen corresponding path program 1 times [2021-11-12 23:03:08,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:08,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76889976] [2021-11-12 23:03:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:08,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:08,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:08,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:03:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:08,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:03:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:08,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:08,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:08,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76889976] [2021-11-12 23:03:08,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76889976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:08,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:08,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:03:08,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192091466] [2021-11-12 23:03:08,512 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:08,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:03:08,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:08,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:03:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:08,544 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:03:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:08,657 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-11-12 23:03:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:03:08,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-12 23:03:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:08,668 INFO L225 Difference]: With dead ends: 31 [2021-11-12 23:03:08,668 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 23:03:08,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:08,674 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:08,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 79.93ms Time] [2021-11-12 23:03:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 23:03:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-12 23:03:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.65) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-11-12 23:03:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-12 23:03:08,708 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2021-11-12 23:03:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:08,709 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-12 23:03:08,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:03:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-12 23:03:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:03:08,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:08,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:08,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:08,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:08,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash 119449364, now seen corresponding path program 1 times [2021-11-12 23:03:08,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:08,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165854186] [2021-11-12 23:03:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:08,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:08,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:08,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:08,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:03:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:09,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:03:09,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:09,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:03:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:09,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:09,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:09,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165854186] [2021-11-12 23:03:09,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165854186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:09,209 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:09,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:03:09,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723807848] [2021-11-12 23:03:09,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:09,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:03:09,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:03:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:09,219 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:09,350 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-11-12 23:03:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:03:09,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:03:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:09,352 INFO L225 Difference]: With dead ends: 25 [2021-11-12 23:03:09,352 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:03:09,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:03:09,353 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:09,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 124.57ms Time] [2021-11-12 23:03:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:03:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-12 23:03:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-11-12 23:03:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-12 23:03:09,360 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2021-11-12 23:03:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:09,360 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-12 23:03:09,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-12 23:03:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:03:09,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:09,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:09,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:09,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:09,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 23:03:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 119449365, now seen corresponding path program 1 times [2021-11-12 23:03:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:09,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769029907] [2021-11-12 23:03:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:09,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:09,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:09,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:09,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:03:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:03:09,667 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:03:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:03:09,728 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:03:09,729 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:03:09,730 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 9 remaining) [2021-11-12 23:03:09,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (7 of 9 remaining) [2021-11-12 23:03:09,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 9 remaining) [2021-11-12 23:03:09,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 9 remaining) [2021-11-12 23:03:09,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 9 remaining) [2021-11-12 23:03:09,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 9 remaining) [2021-11-12 23:03:09,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (2 of 9 remaining) [2021-11-12 23:03:09,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-11-12 23:03:09,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-11-12 23:03:09,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:09,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:09,954 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:03:09,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:03:09,973 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:03:09,990 INFO L158 Benchmark]: Toolchain (without parser) took 3125.88ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.8MB in the beginning and 32.0MB in the end (delta: -284.2kB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-12 23:03:09,992 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:09,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.47ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 48.1MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:03:09,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.87ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:09,998 INFO L158 Benchmark]: Boogie Preprocessor took 54.59ms. Allocated memory is still 71.3MB. Free memory was 46.3MB in the beginning and 44.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:03:09,999 INFO L158 Benchmark]: RCFGBuilder took 491.08ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 50.7MB in the end (delta: -5.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-12 23:03:10,004 INFO L158 Benchmark]: TraceAbstraction took 1824.86ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 32.0MB in the end (delta: 18.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-11-12 23:03:10,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.47ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 48.1MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.87ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.59ms. Allocated memory is still 71.3MB. Free memory was 46.3MB in the beginning and 44.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.08ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 50.7MB in the end (delta: -5.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1824.86ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 32.0MB in the end (delta: 18.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:03:10,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb62268c-fb15-4d4e-886d-5d8481da07b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null