./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a7fa473b022aa2e23bff7f5f7b8857d51e8b48cb53169d649271e1a03b0ebc0 .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:02:34,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:02:34,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:02:34,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:02:34,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:02:34,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:02:34,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:02:34,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:02:34,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:02:34,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:02:34,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:02:34,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:02:34,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:02:34,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:02:34,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:02:34,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:02:34,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:02:34,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:02:34,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:02:34,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:02:34,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:02:34,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:02:34,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:02:34,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:02:34,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:02:34,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:02:34,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:02:34,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:02:34,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:02:34,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:02:34,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:02:34,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:02:34,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:02:34,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:02:34,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:02:34,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:02:34,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:02:34,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:02:34,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:02:34,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:02:34,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:02:34,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:02:34,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:02:34,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:02:34,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:02:34,506 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:02:34,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:02:34,507 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:02:34,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:02:34,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:02:34,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:02:34,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:02:34,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:02:34,509 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:02:34,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:02:34,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:02:34,510 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:02:34,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:02:34,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:02:34,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:02:34,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:02:34,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:02:34,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:02:34,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:02:34,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:02:34,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:02:34,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:02:34,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:02:34,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:02:34,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:02:34,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:02:34,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:02:34,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:02:34,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:02:34,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:02:34,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:02:34,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:02:34,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:02:34,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:02:34,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:02:34,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:02:34,517 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_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a7fa473b022aa2e23bff7f5f7b8857d51e8b48cb53169d649271e1a03b0ebc0 [2021-10-20 06:02:34,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:02:34,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:02:34,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:02:34,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:02:34,892 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:02:34,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-10-20 06:02:34,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/data/443db22e3/17362de1564d4a3f8b3e496590a07c30/FLAGd43c5f623 [2021-10-20 06:02:35,389 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:02:35,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-10-20 06:02:35,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/data/443db22e3/17362de1564d4a3f8b3e496590a07c30/FLAGd43c5f623 [2021-10-20 06:02:35,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/data/443db22e3/17362de1564d4a3f8b3e496590a07c30 [2021-10-20 06:02:35,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:02:35,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:02:35,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:02:35,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:02:35,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:02:35,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:02:35" (1/1) ... [2021-10-20 06:02:35,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b78395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:35, skipping insertion in model container [2021-10-20 06:02:35,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:02:35" (1/1) ... [2021-10-20 06:02:35,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:02:35,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:02:36,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-10-20 06:02:36,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:02:36,050 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:02:36,062 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-10-20 06:02:36,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:02:36,083 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:02:36,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36 WrapperNode [2021-10-20 06:02:36,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:02:36,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:02:36,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:02:36,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:02:36,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:02:36,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:02:36,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:02:36,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:02:36,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:02:36,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:02:36,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:02:36,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:02:36,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (1/1) ... [2021-10-20 06:02:36,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:02:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:02:36,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:02:36,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:02:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:02:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:02:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:02:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:02:36,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:02:36,528 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-20 06:02:36,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:02:36 BoogieIcfgContainer [2021-10-20 06:02:36,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:02:36,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:02:36,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:02:36,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:02:36,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:02:35" (1/3) ... [2021-10-20 06:02:36,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc25d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:02:36, skipping insertion in model container [2021-10-20 06:02:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:02:36" (2/3) ... [2021-10-20 06:02:36,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc25d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:02:36, skipping insertion in model container [2021-10-20 06:02:36,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:02:36" (3/3) ... [2021-10-20 06:02:36,540 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.c [2021-10-20 06:02:36,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:02:36,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 06:02:36,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:02:36,600 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:02:36,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 06:02:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 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) [2021-10-20 06:02:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:02:36,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:02:36,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:02:36,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:02:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:02:36,648 INFO L82 PathProgramCache]: Analyzing trace with hash 81490399, now seen corresponding path program 1 times [2021-10-20 06:02:36,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:02:36,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877768295] [2021-10-20 06:02:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:02:36,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:02:36,781 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:02:36,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893647439] [2021-10-20 06:02:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:02:36,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:36,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:02:36,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:02:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:02:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:02:36,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:02:36,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:02:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:02:37,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:02:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:02:37,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:02:37,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877768295] [2021-10-20 06:02:37,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:02:37,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893647439] [2021-10-20 06:02:37,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893647439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:02:37,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:02:37,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 06:02:37,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037759400] [2021-10-20 06:02:37,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:02:37,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:02:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:02:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:02:37,494 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 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) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2021-10-20 06:02:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:02:38,242 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-10-20 06:02:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:02:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 5 [2021-10-20 06:02:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:02:38,254 INFO L225 Difference]: With dead ends: 40 [2021-10-20 06:02:38,254 INFO L226 Difference]: Without dead ends: 13 [2021-10-20 06:02:38,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 408.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:02:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-20 06:02:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-20 06:02:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:02:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-20 06:02:38,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-10-20 06:02:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:02:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-20 06:02:38,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2021-10-20 06:02:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-20 06:02:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:02:38,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:02:38,294 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:02:38,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:02:38,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:38,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:02:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:02:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 908273882, now seen corresponding path program 1 times [2021-10-20 06:02:38,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:02:38,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506549376] [2021-10-20 06:02:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:02:38,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:02:38,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:02:38,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270283395] [2021-10-20 06:02:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:02:38,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:02:38,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:02:38,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:02:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:02:38,602 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:02:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:02:38,635 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:02:38,635 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:02:38,637 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:38,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:38,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:38,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:02:38,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:38,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:02:38,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:02:38 BoogieIcfgContainer [2021-10-20 06:02:38,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:02:38,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:02:38,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:02:38,896 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:02:38,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:02:36" (3/4) ... [2021-10-20 06:02:38,899 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 06:02:38,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:02:38,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:02:38,953 INFO L168 Benchmark]: Toolchain (without parser) took 3145.03 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 87.6 MB in the beginning and 67.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,953 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:02:38,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.63 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 87.2 MB in the beginning and 120.6 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 146.8 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,957 INFO L168 Benchmark]: Boogie Preprocessor took 20.55 ms. Allocated memory is still 146.8 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:02:38,957 INFO L168 Benchmark]: RCFGBuilder took 389.95 ms. Allocated memory is still 146.8 MB. Free memory was 117.9 MB in the beginning and 106.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,958 INFO L168 Benchmark]: TraceAbstraction took 2362.71 ms. Allocated memory is still 146.8 MB. Free memory was 106.4 MB in the beginning and 69.1 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,959 INFO L168 Benchmark]: Witness Printer took 54.85 ms. Allocated memory is still 146.8 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:38,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.63 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 87.2 MB in the beginning and 120.6 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 146.8 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.55 ms. Allocated memory is still 146.8 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.95 ms. Allocated memory is still 146.8 MB. Free memory was 117.9 MB in the beginning and 106.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2362.71 ms. Allocated memory is still 146.8 MB. Free memory was 106.4 MB in the beginning and 69.1 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.85 ms. Allocated memory is still 146.8 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND FALSE !(counter++<1) [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2275.2ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 30.0ms, AutomataDifference: 794.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 28 SDslu, 11 SDs, 0 SdLazy, 18 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 654.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 408.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 33.1ms SatisfiabilityAnalysisTime, 593.2ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 3 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 06:02:38,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2464876e-1d4d-4079-9ae8-5b2b522ea8e5/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...