./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:12:56,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:12:56,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:12:56,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:12:56,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:12:56,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:12:56,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:12:56,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:12:56,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:12:56,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:12:56,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:12:56,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:12:56,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:12:56,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:12:56,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:12:56,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:12:56,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:12:56,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:12:56,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:12:56,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:12:56,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:12:56,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:12:56,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:12:56,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:12:56,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:12:56,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:12:56,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:12:56,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:12:56,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:12:56,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:12:56,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:12:56,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:12:56,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:12:56,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:12:56,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:12:56,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:12:56,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:12:56,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:12:56,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:12:56,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:12:56,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:12:56,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 06:12:56,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:12:56,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:12:56,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:12:56,917 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:12:56,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:12:56,918 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:12:56,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:12:56,918 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:12:56,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:12:56,918 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:12:56,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:12:56,919 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:12:56,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:12:56,919 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:12:56,920 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:12:56,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 06:12:56,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 06:12:56,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:12:56,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:12:56,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 06:12:56,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:12:56,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:12:56,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:12:56,922 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 06:12:56,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 06:12:56,923 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 06:12:56,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:12:56,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:12:56,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:12:56,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:12:56,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:12:56,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:12:56,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:12:56,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:12:56,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:12:56,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:12:56,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:12:56,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:12:56,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:12:56,926 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b [2021-10-20 06:12:57,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:12:57,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:12:57,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:12:57,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:12:57,234 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:12:57,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-10-20 06:12:57,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/data/7fd7de753/a21a1946e5d848e598148ef6cffe267e/FLAGa6942db3d [2021-10-20 06:12:57,785 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:12:57,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-10-20 06:12:57,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/data/7fd7de753/a21a1946e5d848e598148ef6cffe267e/FLAGa6942db3d [2021-10-20 06:12:58,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/data/7fd7de753/a21a1946e5d848e598148ef6cffe267e [2021-10-20 06:12:58,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:12:58,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:12:58,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:12:58,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:12:58,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:12:58,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4a1a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58, skipping insertion in model container [2021-10-20 06:12:58,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:12:58,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:12:58,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:12:58,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:12:58,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:12:58,593 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:12:58,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58 WrapperNode [2021-10-20 06:12:58,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:12:58,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:12:58,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:12:58,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:12:58,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:12:58,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:12:58,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:12:58,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:12:58,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:12:58,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:12:58,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:12:58,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:12:58,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (1/1) ... [2021-10-20 06:12:58,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:12:58,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:12:58,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:12:58,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:12:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:12:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:12:58,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:12:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:12:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:12:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:12:59,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:12:59,329 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 06:12:59,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:59 BoogieIcfgContainer [2021-10-20 06:12:59,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:12:59,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:12:59,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:12:59,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:12:59,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:12:58" (1/3) ... [2021-10-20 06:12:59,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a0123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:12:59, skipping insertion in model container [2021-10-20 06:12:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:58" (2/3) ... [2021-10-20 06:12:59,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a0123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:12:59, skipping insertion in model container [2021-10-20 06:12:59,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:59" (3/3) ... [2021-10-20 06:12:59,355 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2021-10-20 06:12:59,366 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:12:59,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-20 06:12:59,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:12:59,433 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 [2021-10-20 06:12:59,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-20 06:12:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:12:59,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:59,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:12:59,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:12:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash 4075446, now seen corresponding path program 1 times [2021-10-20 06:12:59,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:59,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286599142] [2021-10-20 06:12:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:59,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:12:59,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:59,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286599142] [2021-10-20 06:12:59,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286599142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:59,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:59,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:59,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667142836] [2021-10-20 06:12:59,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:59,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:59,713 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:59,768 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-10-20 06:12:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-20 06:12:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:59,778 INFO L225 Difference]: With dead ends: 39 [2021-10-20 06:12:59,779 INFO L226 Difference]: Without dead ends: 38 [2021-10-20 06:12:59,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-20 06:12:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-10-20 06:12:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 2.076923076923077) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-20 06:12:59,821 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2021-10-20 06:12:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:59,822 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-20 06:12:59,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-20 06:12:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:12:59,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:59,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:12:59,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:12:59,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:12:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:59,827 INFO L82 PathProgramCache]: Analyzing trace with hash 3972391, now seen corresponding path program 1 times [2021-10-20 06:12:59,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:59,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309007632] [2021-10-20 06:12:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:59,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:12:59,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:59,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309007632] [2021-10-20 06:12:59,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309007632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:59,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:59,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:59,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649724368] [2021-10-20 06:12:59,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:12:59,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:12:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:59,954 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:13:00,012 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-20 06:13:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:13:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-20 06:13:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:13:00,015 INFO L225 Difference]: With dead ends: 22 [2021-10-20 06:13:00,017 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:13:00,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:13:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:13:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 06:13:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-20 06:13:00,024 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2021-10-20 06:13:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:13:00,025 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-20 06:13:00,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-20 06:13:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:13:00,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:13:00,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:13:00,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:13:00,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:13:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:13:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 3972392, now seen corresponding path program 1 times [2021-10-20 06:13:00,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:13:00,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93869474] [2021-10-20 06:13:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:13:00,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:13:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:13:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:13:00,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:13:00,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93869474] [2021-10-20 06:13:00,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93869474] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:13:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:13:00,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:13:00,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81189024] [2021-10-20 06:13:00,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:13:00,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:13:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:13:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:13:00,153 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:13:00,319 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-10-20 06:13:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:13:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-20 06:13:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:13:00,322 INFO L225 Difference]: With dead ends: 51 [2021-10-20 06:13:00,322 INFO L226 Difference]: Without dead ends: 51 [2021-10-20 06:13:00,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:13:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-20 06:13:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 24. [2021-10-20 06:13:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-20 06:13:00,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 4 [2021-10-20 06:13:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:13:00,328 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-20 06:13:00,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-20 06:13:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:13:00,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:13:00,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:13:00,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:13:00,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:13:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:13:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash 123235085, now seen corresponding path program 1 times [2021-10-20 06:13:00,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:13:00,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780275076] [2021-10-20 06:13:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:13:00,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:13:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:13:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:13:00,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:13:00,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780275076] [2021-10-20 06:13:00,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780275076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:13:00,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:13:00,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:13:00,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285906895] [2021-10-20 06:13:00,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:13:00,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:13:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:13:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:13:00,372 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:13:00,408 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-20 06:13:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:13:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 06:13:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:13:00,410 INFO L225 Difference]: With dead ends: 22 [2021-10-20 06:13:00,410 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:13:00,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:13:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:13:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 06:13:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-20 06:13:00,414 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 5 [2021-10-20 06:13:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:13:00,414 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-20 06:13:00,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-20 06:13:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:13:00,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:13:00,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:13:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 06:13:00,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:13:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:13:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash 123235086, now seen corresponding path program 1 times [2021-10-20 06:13:00,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:13:00,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436689132] [2021-10-20 06:13:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:13:00,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:13:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:13:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:13:00,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:13:00,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436689132] [2021-10-20 06:13:00,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436689132] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:13:00,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:13:00,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:13:00,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018738134] [2021-10-20 06:13:00,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:13:00,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:13:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:13:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:13:00,461 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:13:00,521 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-20 06:13:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:13:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 06:13:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:13:00,523 INFO L225 Difference]: With dead ends: 35 [2021-10-20 06:13:00,523 INFO L226 Difference]: Without dead ends: 35 [2021-10-20 06:13:00,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:13:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-20 06:13:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2021-10-20 06:13:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-20 06:13:00,529 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5 [2021-10-20 06:13:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:13:00,529 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-20 06:13:00,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:13:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-20 06:13:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:13:00,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:13:00,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:13:00,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 06:13:00,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-20 06:13:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:13:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash 123144114, now seen corresponding path program 1 times [2021-10-20 06:13:00,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:13:00,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885724683] [2021-10-20 06:13:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:13:00,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:13:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:13:00,562 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:13:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:13:00,611 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:13:00,611 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:13:00,612 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-20 06:13:00,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-20 06:13:00,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-20 06:13:00,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-20 06:13:00,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-20 06:13:00,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-20 06:13:00,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-20 06:13:00,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-20 06:13:00,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-20 06:13:00,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-20 06:13:00,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 06:13:00,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 06:13:00,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:13:00,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:13:00 BoogieIcfgContainer [2021-10-20 06:13:00,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:13:00,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:13:00,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:13:00,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:13:00,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:59" (3/4) ... [2021-10-20 06:13:00,648 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 06:13:00,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:13:00,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:13:00,677 INFO L168 Benchmark]: Toolchain (without parser) took 2398.63 ms. Allocated memory is still 115.3 MB. Free memory was 79.4 MB in the beginning and 70.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-20 06:13:00,677 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 88.7 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:13:00,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.39 ms. Allocated memory is still 115.3 MB. Free memory was 79.2 MB in the beginning and 90.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:13:00,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 88.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:13:00,679 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:13:00,680 INFO L168 Benchmark]: RCFGBuilder took 664.67 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 70.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:13:00,680 INFO L168 Benchmark]: TraceAbstraction took 1311.55 ms. Allocated memory is still 115.3 MB. Free memory was 70.1 MB in the beginning and 72.9 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:13:00,681 INFO L168 Benchmark]: Witness Printer took 29.46 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 70.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:13:00,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 88.7 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.39 ms. Allocated memory is still 115.3 MB. Free memory was 79.2 MB in the beginning and 90.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 88.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.08 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 664.67 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 70.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1311.55 ms. Allocated memory is still 115.3 MB. Free memory was 70.1 MB in the beginning and 72.9 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 29.46 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 70.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 [L33] COND TRUE i < 100 [L21] int a[n], i; [L22] i = 0 [L22] COND TRUE i < size [L23] EXPR b[i] [L23] a[i] = b[i] - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: 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, 24 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1204.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 15.8ms, AutomataDifference: 427.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 124 SDslu, 61 SDs, 0 SdLazy, 141 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.5ms SsaConstructionTime, 120.5ms SatisfiabilityAnalysisTime, 287.6ms InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 06:13:00,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea8ab6c-bef1-4f7a-9e85-6c898f31d691/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...