./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3e64a3bb1136adaedbe48fbb8a8a2a2e8de15e4ab22e021abc9c36f399fb6cc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:34:52,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:34:52,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:34:52,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:34:52,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:34:52,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:34:52,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:34:52,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:34:52,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:34:52,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:34:52,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:34:52,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:34:52,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:34:52,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:34:52,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:34:52,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:34:52,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:34:52,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:34:52,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:34:52,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:34:52,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:34:52,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:34:52,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:34:52,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:34:52,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:34:52,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:34:52,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:34:52,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:34:52,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:34:52,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:34:52,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:34:52,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:34:52,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:34:52,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:34:52,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:34:52,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:34:52,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:34:52,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:34:52,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:34:52,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:34:52,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:34:52,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:34:52,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:34:52,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:34:52,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:34:52,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:34:52,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:34:52,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:34:52,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:34:52,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:34:52,858 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:34:52,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:34:52,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:34:52,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:34:52,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:34:52,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:34:52,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:34:52,861 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:34:52,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:34:52,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:34:52,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:34:52,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:34:52,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:34:52,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:34:52,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:34:52,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:34:52,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:34:52,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:34:52,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:34:52,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:34:52,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:34:52,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:34:52,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:34:52,866 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_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e64a3bb1136adaedbe48fbb8a8a2a2e8de15e4ab22e021abc9c36f399fb6cc [2021-11-20 05:34:53,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:34:53,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:34:53,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:34:53,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:34:53,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:34:53,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2021-11-20 05:34:53,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/data/05a31be87/f2ecc5deb8e44caa9fbe869cee3bee7f/FLAGbed2fcb6d [2021-11-20 05:34:53,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:34:53,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2021-11-20 05:34:53,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/data/05a31be87/f2ecc5deb8e44caa9fbe869cee3bee7f/FLAGbed2fcb6d [2021-11-20 05:34:54,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/data/05a31be87/f2ecc5deb8e44caa9fbe869cee3bee7f [2021-11-20 05:34:54,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:34:54,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:34:54,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:34:54,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:34:54,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:34:54,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240621ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54, skipping insertion in model container [2021-11-20 05:34:54,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:34:54,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:34:54,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:34:54,488 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:34:54,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:34:54,524 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:34:54,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54 WrapperNode [2021-11-20 05:34:54,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:34:54,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:34:54,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:34:54,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:34:54,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,580 INFO L137 Inliner]: procedures = 12, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-20 05:34:54,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:34:54,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:34:54,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:34:54,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:34:54,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:34:54,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:34:54,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:34:54,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:34:54,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (1/1) ... [2021-11-20 05:34:54,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:34:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:34:54,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:34:54,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:34:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:34:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:34:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:34:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:34:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:34:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:34:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:34:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:34:54,822 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:34:54,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:34:54,959 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:34:54,965 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:34:54,965 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:34:54,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:34:54 BoogieIcfgContainer [2021-11-20 05:34:54,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:34:54,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:34:54,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:34:54,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:34:54,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:34:54" (1/3) ... [2021-11-20 05:34:54,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11422a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:34:54, skipping insertion in model container [2021-11-20 05:34:54,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:34:54" (2/3) ... [2021-11-20 05:34:54,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11422a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:34:54, skipping insertion in model container [2021-11-20 05:34:54,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:34:54" (3/3) ... [2021-11-20 05:34:54,977 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-2.c [2021-11-20 05:34:54,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:34:54,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-20 05:34:55,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:34:55,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:34:55,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-20 05:34:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-11-20 05:34:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:34:55,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:55,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:34:55,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 05:34:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 05:34:55,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190012441] [2021-11-20 05:34:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:55,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:55,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:55,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190012441] [2021-11-20 05:34:55,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190012441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:55,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:55,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:34:55,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204474327] [2021-11-20 05:34:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:55,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:34:55,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:34:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:34:55,393 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:55,453 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-20 05:34:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:34:55,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:34:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:55,465 INFO L225 Difference]: With dead ends: 15 [2021-11-20 05:34:55,466 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 05:34:55,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:34:55,473 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:55,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:34:55,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 05:34:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 05:34:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-20 05:34:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-20 05:34:55,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2021-11-20 05:34:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:55,510 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-20 05:34:55,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-20 05:34:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:34:55,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:55,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:34:55,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:34:55,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 05:34:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 05:34:55,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:55,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437702139] [2021-11-20 05:34:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:55,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:55,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:55,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437702139] [2021-11-20 05:34:55,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437702139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:55,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:55,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:34:55,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579745464] [2021-11-20 05:34:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:55,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:34:55,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:55,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:34:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:34:55,580 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:55,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:55,603 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-11-20 05:34:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:34:55,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:34:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:55,605 INFO L225 Difference]: With dead ends: 12 [2021-11-20 05:34:55,606 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 05:34:55,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:34:55,612 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:55,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:34:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 05:34:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 05:34:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 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) [2021-11-20 05:34:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-11-20 05:34:55,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-11-20 05:34:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:55,617 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-11-20 05:34:55,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-11-20 05:34:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:34:55,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:55,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:55,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:34:55,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 05:34:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1803025956, now seen corresponding path program 1 times [2021-11-20 05:34:55,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:55,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528460295] [2021-11-20 05:34:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:55,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:34:55,671 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:34:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:34:55,731 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:34:55,731 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:34:55,732 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 5 remaining) [2021-11-20 05:34:55,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (3 of 5 remaining) [2021-11-20 05:34:55,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (2 of 5 remaining) [2021-11-20 05:34:55,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-11-20 05:34:55,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-11-20 05:34:55,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:34:55,741 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 05:34:55,745 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:34:55,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:34:55 BoogieIcfgContainer [2021-11-20 05:34:55,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:34:55,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:34:55,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:34:55,770 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:34:55,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:34:54" (3/4) ... [2021-11-20 05:34:55,772 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 05:34:55,844 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:34:55,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:34:55,845 INFO L158 Benchmark]: Toolchain (without parser) took 1623.11ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 84.7MB in the end (delta: -12.9MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,846 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:34:55,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.51ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 85.0MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.79ms. Allocated memory is still 107.0MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,847 INFO L158 Benchmark]: Boogie Preprocessor took 54.41ms. Allocated memory is still 107.0MB. Free memory was 83.4MB in the beginning and 82.4MB in the end (delta: 934.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:34:55,848 INFO L158 Benchmark]: RCFGBuilder took 331.08ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 73.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,848 INFO L158 Benchmark]: TraceAbstraction took 799.06ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 44.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,849 INFO L158 Benchmark]: Witness Printer took 75.13ms. Allocated memory is still 107.0MB. Free memory was 44.7MB in the beginning and 84.7MB in the end (delta: -40.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 05:34:55,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.51ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 85.0MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.79ms. Allocated memory is still 107.0MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.41ms. Allocated memory is still 107.0MB. Free memory was 83.4MB in the beginning and 82.4MB in the end (delta: 934.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.08ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 73.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 799.06ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 44.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 75.13ms. Allocated memory is still 107.0MB. Free memory was 44.7MB in the beginning and 84.7MB in the end (delta: -40.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L17] CALL, EXPR foo() [L12] int arr[123]; [L13] CALL, EXPR foo2() [L5] int arr[1024]; VAL [arr={5:0}] [L6] arr[194] = 13 VAL [arr={5:0}] [L7] return arr + 1; [L7] return arr + 1; VAL [\result={5:4}] [L13] RET, EXPR foo2() [L13] return foo2(); [L17] RET, EXPR foo() [L17] int *a = foo(); [L18] \read(*a) - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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! [2021-11-20 05:34:55,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a862757a-9c9d-4e4f-89ea-5673b6e760e3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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(valid-deref)