./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8 --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 7e4b751f1cff14576af7e2c8fb6f6f5af2d2fb8f159c6730e8a5d44ae1632f58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:04:40,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:04:40,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:04:40,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:04:40,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:04:40,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:04:40,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:04:40,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:04:40,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:04:40,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:04:40,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:04:40,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:04:40,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:04:40,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:04:40,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:04:40,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:04:40,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:04:40,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:04:41,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:04:41,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:04:41,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:04:41,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:04:41,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:04:41,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:04:41,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:04:41,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:04:41,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:04:41,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:04:41,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:04:41,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:04:41,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:04:41,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:04:41,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:04:41,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:04:41,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:04:41,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:04:41,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:04:41,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:04:41,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:04:41,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:04:41,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:04:41,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:04:41,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:04:41,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:04:41,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:04:41,078 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:04:41,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:04:41,078 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:04:41,078 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:04:41,078 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:04:41,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:04:41,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:04:41,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:04:41,079 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:04:41,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:04:41,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:04:41,084 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:04:41,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:04:41,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:04:41,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:04:41,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:04:41,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:04:41,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:04:41,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:04:41,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:04:41,087 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:04:41,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:04:41,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:04:41,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:04:41,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:04:41,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:04:41,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:04:41,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:41,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:04:41,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:04:41,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:04:41,090 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:04:41,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:04:41,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:04:41,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:04:41,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:04:41,091 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_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e4b751f1cff14576af7e2c8fb6f6f5af2d2fb8f159c6730e8a5d44ae1632f58 [2021-11-07 02:04:41,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:04:41,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:04:41,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:04:41,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:04:41,395 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:04:41,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-regression/test06.c [2021-11-07 02:04:41,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/data/09b0b242e/22714b37454e433a97e4dde05216cbe0/FLAG783fb6eb3 [2021-11-07 02:04:42,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:04:42,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/sv-benchmarks/c/ldv-regression/test06.c [2021-11-07 02:04:42,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/data/09b0b242e/22714b37454e433a97e4dde05216cbe0/FLAG783fb6eb3 [2021-11-07 02:04:42,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/data/09b0b242e/22714b37454e433a97e4dde05216cbe0 [2021-11-07 02:04:42,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:04:42,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:04:42,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:42,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:04:42,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:04:42,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e19893c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42, skipping insertion in model container [2021-11-07 02:04:42,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:04:42,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:42,594 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_ed161bf6-c9e7-46e9-b99a-f63389601635/sv-benchmarks/c/ldv-regression/test06.c[670,683] [2021-11-07 02:04:42,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:42,611 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:04:42,625 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_ed161bf6-c9e7-46e9-b99a-f63389601635/sv-benchmarks/c/ldv-regression/test06.c[670,683] [2021-11-07 02:04:42,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:42,640 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:04:42,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42 WrapperNode [2021-11-07 02:04:42,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:42,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:04:42,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:04:42,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:04:42,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:04:42,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:04:42,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:04:42,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:04:42,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:04:42,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:04:42,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:04:42,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:04:42,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:04:42,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:04:42,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:04:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:04:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:04:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:04:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:04:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 02:04:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:04:42,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:04:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 02:04:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:04:43,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:04:43,525 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 02:04:43,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:43 BoogieIcfgContainer [2021-11-07 02:04:43,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:04:43,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:04:43,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:04:43,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:04:43,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:04:42" (1/3) ... [2021-11-07 02:04:43,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c944c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:43, skipping insertion in model container [2021-11-07 02:04:43,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42" (2/3) ... [2021-11-07 02:04:43,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c944c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:43, skipping insertion in model container [2021-11-07 02:04:43,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:43" (3/3) ... [2021-11-07 02:04:43,541 INFO L111 eAbstractionObserver]: Analyzing ICFG test06.c [2021-11-07 02:04:43,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:04:43,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:04:43,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:04:43,606 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 [2021-11-07 02:04:43,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:04:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-11-07 02:04:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:04:43,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:43,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:04:43,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:04:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash 57151, now seen corresponding path program 1 times [2021-11-07 02:04:43,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:04:43,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313509215] [2021-11-07 02:04:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:43,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:04:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:04:44,014 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:04:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:04:44,151 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:04:44,153 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:04:44,154 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:04:44,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:04:44,161 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:04:44,164 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:04:44,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:04:44 BoogieIcfgContainer [2021-11-07 02:04:44,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:04:44,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:04:44,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:04:44,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:04:44,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:43" (3/4) ... [2021-11-07 02:04:44,199 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 02:04:44,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:04:44,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:04:44,245 INFO L168 Benchmark]: Toolchain (without parser) took 1868.31 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 70.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:44,246 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 78.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:04:44,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.31 ms. Allocated memory is still 100.7 MB. Free memory was 62.2 MB in the beginning and 75.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:44,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.31 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 73.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:44,248 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.8 MB in the end (delta: 854.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:04:44,248 INFO L168 Benchmark]: RCFGBuilder took 801.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 47.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:44,249 INFO L168 Benchmark]: TraceAbstraction took 661.39 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 46.8 MB in the beginning and 72.7 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:04:44,250 INFO L168 Benchmark]: Witness Printer took 48.28 ms. Allocated memory is still 123.7 MB. Free memory was 72.7 MB in the beginning and 70.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:44,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 78.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.31 ms. Allocated memory is still 100.7 MB. Free memory was 62.2 MB in the beginning and 75.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.31 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 73.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.30 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.8 MB in the end (delta: 854.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 801.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 47.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 661.39 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 46.8 MB in the beginning and 72.7 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.28 ms. Allocated memory is still 123.7 MB. Free memory was 72.7 MB in the beginning and 70.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int a, b; [L24] int *p1, *p2; [L26] p1 = &a [L27] p2 = &b [L29] b = 1 [L30] a = 5 [L32] EXPR \read(a) [L32] a-- [L34] EXPR \read(a) [L14] COND TRUE a == 4 [L7] EXPR \read(**p2) [L7] int *pq = *p2; [L9] EXPR \read(**p2) [L9] *p1 = *p2 [L10] *pq = 0 [L16] return 1; [L34] a = f(a, &p1, &p2) [L36] EXPR \read(*p1) [L36] COND TRUE *p1 == 0 [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-11-07 02:04:44,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed161bf6-c9e7-46e9-b99a-f63389601635/bin/utaipan-UUZaoUuFF8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE