./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8 --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 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:32:58,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:58,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:58,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:58,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:58,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:58,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:58,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:58,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:58,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:58,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:58,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:58,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:58,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:58,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:58,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:59,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:59,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:59,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:59,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:59,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:59,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:59,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:59,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:59,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:59,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:59,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:59,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:59,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:59,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:59,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:59,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:59,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:59,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:59,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:59,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:59,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:59,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:59,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:59,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:59,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:59,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:32:59,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:59,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:59,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:59,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:59,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:59,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:59,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:59,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:59,115 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:59,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:59,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:59,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:32:59,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:32:59,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:59,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:59,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:32:59,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:32:59,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:32:59,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:59,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:32:59,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:59,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:59,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:59,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:59,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:59,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:59,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:59,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:59,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:32:59,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:32:59,125 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_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 [2022-11-16 12:32:59,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:59,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:59,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:59,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:59,542 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:59,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2022-11-16 12:32:59,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/data/5ee2fd787/620e8ef254b5419499140f99dea5699e/FLAG86debd744 [2022-11-16 12:33:00,234 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:33:00,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/sv-benchmarks/c/memsafety-ext3/scopes2.c [2022-11-16 12:33:00,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/data/5ee2fd787/620e8ef254b5419499140f99dea5699e/FLAG86debd744 [2022-11-16 12:33:00,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/data/5ee2fd787/620e8ef254b5419499140f99dea5699e [2022-11-16 12:33:00,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:33:00,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:33:00,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:33:00,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:33:00,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:33:00,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:33:00" (1/1) ... [2022-11-16 12:33:00,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49544f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:00, skipping insertion in model container [2022-11-16 12:33:00,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:33:00" (1/1) ... [2022-11-16 12:33:00,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:33:00,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:33:00,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:33:00,966 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:33:00,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:33:01,007 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:33:01,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01 WrapperNode [2022-11-16 12:33:01,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:33:01,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:33:01,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:33:01,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:33:01,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,058 INFO L138 Inliner]: procedures = 11, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-16 12:33:01,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:33:01,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:33:01,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:33:01,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:33:01,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:33:01,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:33:01,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:33:01,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:33:01,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (1/1) ... [2022-11-16 12:33:01,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:33:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:33:01,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:33:01,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:33:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:33:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:33:01,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:33:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:33:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:33:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:33:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:33:01,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:33:01,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:33:01,467 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:33:01,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:33:01,474 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:33:01,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:01 BoogieIcfgContainer [2022-11-16 12:33:01,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:33:01,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:33:01,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:33:01,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:33:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:33:00" (1/3) ... [2022-11-16 12:33:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e7dd51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:33:01, skipping insertion in model container [2022-11-16 12:33:01,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:01" (2/3) ... [2022-11-16 12:33:01,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e7dd51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:33:01, skipping insertion in model container [2022-11-16 12:33:01,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:01" (3/3) ... [2022-11-16 12:33:01,488 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes2.c [2022-11-16 12:33:01,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:33:01,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-16 12:33:01,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:33:01,584 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f7f080a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:33:01,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:33:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 14 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) [2022-11-16 12:33:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:33:01,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:01,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:33:01,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-11-16 12:33:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 28693828, now seen corresponding path program 1 times [2022-11-16 12:33:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:01,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704370691] [2022-11-16 12:33:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:01,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:33:01,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:33:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:33:01,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:33:01,900 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:33:01,902 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-11-16 12:33:01,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-16 12:33:01,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-16 12:33:01,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2022-11-16 12:33:01,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2022-11-16 12:33:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:33:01,916 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:33:01,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:33:01,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:33:01 BoogieIcfgContainer [2022-11-16 12:33:01,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:33:01,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:33:01,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:33:01,960 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:33:01,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:01" (3/4) ... [2022-11-16 12:33:01,963 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:33:02,030 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:33:02,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:33:02,033 INFO L158 Benchmark]: Toolchain (without parser) took 1417.42ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 61.5MB in the end (delta: 22.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,034 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:33:02,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.95ms. Allocated memory is still 115.3MB. Free memory was 83.4MB in the beginning and 90.9MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 115.3MB. Free memory was 90.9MB in the beginning and 89.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,038 INFO L158 Benchmark]: Boogie Preprocessor took 46.37ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.3MB in the end (delta: 891.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:33:02,039 INFO L158 Benchmark]: RCFGBuilder took 369.36ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 78.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,039 INFO L158 Benchmark]: TraceAbstraction took 475.29ms. Allocated memory is still 115.3MB. Free memory was 77.5MB in the beginning and 63.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,040 INFO L158 Benchmark]: Witness Printer took 72.69ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 61.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:33:02,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.95ms. Allocated memory is still 115.3MB. Free memory was 83.4MB in the beginning and 90.9MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 115.3MB. Free memory was 90.9MB in the beginning and 89.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.37ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.3MB in the end (delta: 891.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.36ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 78.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 475.29ms. Allocated memory is still 115.3MB. Free memory was 77.5MB in the beginning and 63.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 72.69ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 61.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND TRUE __VERIFIER_nondet_int() [L10] int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] int myNumberA = 7; VAL [myPointerA={6:0}, myPointerB={0:0}] [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB VAL [myNumberB={5:0}, myPointerA={6:0}, myPointerB={5:0}] [L18] \read(*myPointerA) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 4]: 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, 15 locations, 5 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, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 NumberOfCodeBlocks, 5 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! [2022-11-16 12:33:02,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97937005-2e3a-4aee-b7fe-8116ed90b3d4/bin/uautomizer-tPACEb0tL8/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)