./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55f41c66c50792cda5d5bbe104482e2cd600942b05623220f52aeb9f6286617d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:39:48,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:39:48,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:39:48,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:39:48,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:39:48,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:39:48,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:39:48,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:39:48,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:39:48,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:39:48,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:39:48,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:39:48,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:39:48,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:39:48,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:39:48,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:39:48,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:39:48,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:39:48,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:39:48,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:39:48,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:39:48,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:39:48,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:39:48,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:39:48,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:39:48,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:39:48,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:39:48,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:39:48,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:39:48,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:39:48,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:39:48,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:39:48,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:39:48,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:39:48,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:39:48,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:39:48,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:39:48,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:39:48,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:39:48,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:39:48,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:39:48,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:39:49,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:39:49,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:39:49,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:39:49,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:39:49,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:39:49,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:39:49,042 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:39:49,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:39:49,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:39:49,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:39:49,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:39:49,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:39:49,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:39:49,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:39:49,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:39:49,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:39:49,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:39:49,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:39:49,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:39:49,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:39:49,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:39:49,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:39:49,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:39:49,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:39:49,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:39:49,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:39:49,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:39:49,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:39:49,051 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:39:49,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:39:49,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:39:49,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:39:49,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55f41c66c50792cda5d5bbe104482e2cd600942b05623220f52aeb9f6286617d [2021-11-02 22:39:49,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:39:49,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:39:49,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:39:49,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:39:49,551 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:39:49,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-regression/test08.c [2021-11-02 22:39:49,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/data/6afff92f3/a56737d8ff1e4c3da0033edb4140df3e/FLAGd6bac734b [2021-11-02 22:39:50,299 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:39:50,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/sv-benchmarks/c/ldv-regression/test08.c [2021-11-02 22:39:50,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/data/6afff92f3/a56737d8ff1e4c3da0033edb4140df3e/FLAGd6bac734b [2021-11-02 22:39:50,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/data/6afff92f3/a56737d8ff1e4c3da0033edb4140df3e [2021-11-02 22:39:50,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:39:50,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:39:50,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:39:50,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:39:50,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:39:50,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:39:50" (1/1) ... [2021-11-02 22:39:50,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a74949e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:50, skipping insertion in model container [2021-11-02 22:39:50,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:39:50" (1/1) ... [2021-11-02 22:39:50,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:39:50,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:39:50,961 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_e417a42d-95fb-4531-b354-15b7add1a3d7/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-11-02 22:39:50,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:39:51,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:39:51,023 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_e417a42d-95fb-4531-b354-15b7add1a3d7/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-11-02 22:39:51,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:39:51,046 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:39:51,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51 WrapperNode [2021-11-02 22:39:51,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:39:51,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:39:51,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:39:51,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:39:51,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:39:51,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:39:51,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:39:51,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:39:51,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:39:51,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:39:51,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:39:51,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:39:51,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (1/1) ... [2021-11-02 22:39:51,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:39:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:39:51,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:39:51,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:39:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:39:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:39:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:39:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:39:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:39:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:39:51,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:39:51,494 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-02 22:39:51,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:39:51 BoogieIcfgContainer [2021-11-02 22:39:51,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:39:51,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:39:51,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:39:51,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:39:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:39:50" (1/3) ... [2021-11-02 22:39:51,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3e23a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:39:51, skipping insertion in model container [2021-11-02 22:39:51,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:51" (2/3) ... [2021-11-02 22:39:51,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3e23a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:39:51, skipping insertion in model container [2021-11-02 22:39:51,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:39:51" (3/3) ... [2021-11-02 22:39:51,509 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2021-11-02 22:39:51,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:39:51,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:39:51,635 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:39:51,643 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=PETRI_NET, 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 [2021-11-02 22:39:51,644 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:39:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:39:51,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:51,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:39:51,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:39:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:51,698 INFO L85 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2021-11-02 22:39:51,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:51,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915764689] [2021-11-02 22:39:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:51,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:39:51,951 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:39:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:39:52,072 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:39:52,076 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:39:52,078 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:39:52,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:39:52,098 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-02 22:39:52,102 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:39:52,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:39:52 BoogieIcfgContainer [2021-11-02 22:39:52,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:39:52,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:39:52,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:39:52,149 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:39:52,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:39:51" (3/4) ... [2021-11-02 22:39:52,152 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-02 22:39:52,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:39:52,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:39:52,236 INFO L168 Benchmark]: Toolchain (without parser) took 1576.77 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 76.4 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:39:52,236 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:39:52,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.70 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 45.2 MB in the beginning and 79.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:39:52,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.49 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 77.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:39:52,238 INFO L168 Benchmark]: Boogie Preprocessor took 36.57 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 76.9 MB in the end (delta: 945.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:39:52,244 INFO L168 Benchmark]: RCFGBuilder took 360.04 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 66.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:39:52,246 INFO L168 Benchmark]: TraceAbstraction took 644.23 ms. Allocated memory is still 102.8 MB. Free memory was 66.2 MB in the beginning and 78.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:39:52,248 INFO L168 Benchmark]: Witness Printer took 85.57 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:39:52,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.70 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 45.2 MB in the beginning and 79.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.49 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 77.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.57 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 76.9 MB in the end (delta: 945.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 360.04 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 66.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 644.23 ms. Allocated memory is still 102.8 MB. Free memory was 66.2 MB in the beginning and 78.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 85.57 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.4 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: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [a={7:0}, b={6:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] [L29] a = f() [L31] EXPR \read(a) VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] [L31] COND TRUE a && p1 == p2 [L38] reach_error() VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=10occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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! [2021-11-02 22:39:52,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e417a42d-95fb-4531-b354-15b7add1a3d7/bin/uautomizer-tBqnrhUYjU/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