./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/test15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/test15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a --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 939029ab77d002766921942100a4b605c93056ce11f57a75c8adfebda75a0e43 --- 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-b5237d8 [2022-11-21 17:17:08,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:17:08,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:17:08,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:17:08,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:17:08,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:17:08,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:17:08,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:17:08,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:17:08,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:17:08,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:17:08,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:17:08,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:17:08,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:17:08,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:17:08,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:17:08,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:17:08,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:17:08,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:17:09,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:17:09,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:17:09,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:17:09,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:17:09,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:17:09,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:17:09,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:17:09,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:17:09,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:17:09,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:17:09,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:17:09,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:17:09,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:17:09,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:17:09,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:17:09,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:17:09,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:17:09,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:17:09,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:17:09,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:17:09,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:17:09,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:17:09,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 17:17:09,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:17:09,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:17:09,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:17:09,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:17:09,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:17:09,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:17:09,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:17:09,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:17:09,078 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:17:09,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:17:09,079 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:17:09,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:17:09,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:17:09,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:17:09,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:17:09,080 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:17:09,081 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:17:09,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:17:09,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:17:09,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:17:09,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:17:09,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:17:09,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:17:09,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:17:09,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:17:09,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:09,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:17:09,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:17:09,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:17:09,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:17:09,085 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_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 939029ab77d002766921942100a4b605c93056ce11f57a75c8adfebda75a0e43 [2022-11-21 17:17:09,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:17:09,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:17:09,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:17:09,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:17:09,365 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:17:09,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-regression/test15.c [2022-11-21 17:17:12,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:17:12,626 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:17:12,626 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/sv-benchmarks/c/ldv-regression/test15.c [2022-11-21 17:17:12,632 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/data/2b2742b80/5a064197d0e547d1b6bcae15d199ee5d/FLAGc87502d47 [2022-11-21 17:17:12,651 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/data/2b2742b80/5a064197d0e547d1b6bcae15d199ee5d [2022-11-21 17:17:12,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:17:12,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:17:12,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:12,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:17:12,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:17:12,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a41c9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12, skipping insertion in model container [2022-11-21 17:17:12,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:17:12,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:17:12,821 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/sv-benchmarks/c/ldv-regression/test15.c[538,551] [2022-11-21 17:17:12,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:12,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:17:12,849 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/sv-benchmarks/c/ldv-regression/test15.c[538,551] [2022-11-21 17:17:12,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:12,863 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:17:12,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12 WrapperNode [2022-11-21 17:17:12,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:12,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:12,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:17:12,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:17:12,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,897 INFO L138 Inliner]: procedures = 14, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-21 17:17:12,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:12,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:17:12,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:17:12,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:17:12,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:17:12,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:17:12,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:17:12,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:17:12,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (1/1) ... [2022-11-21 17:17:12,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:12,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:17:12,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:17:12,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:17:13,052 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:17:13,054 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:17:13,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:17:13,305 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:17:13,306 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:17:13,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:13 BoogieIcfgContainer [2022-11-21 17:17:13,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:17:13,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:17:13,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:17:13,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:17:13,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:17:12" (1/3) ... [2022-11-21 17:17:13,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f91a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:13, skipping insertion in model container [2022-11-21 17:17:13,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:12" (2/3) ... [2022-11-21 17:17:13,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f91a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:13, skipping insertion in model container [2022-11-21 17:17:13,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:13" (3/3) ... [2022-11-21 17:17:13,318 INFO L112 eAbstractionObserver]: Analyzing ICFG test15.c [2022-11-21 17:17:13,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:17:13,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 17:17:13,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:17:13,440 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;@7430b854, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:17:13,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-21 17:17:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 26 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) [2022-11-21 17:17:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:17:13,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:13,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:17:13,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-21 17:17:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290145191] [2022-11-21 17:17:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290145191] [2022-11-21 17:17:13,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290145191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:13,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:13,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:17:13,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303478186] [2022-11-21 17:17:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:13,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:17:13,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:17:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:13,782 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 26 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:13,862 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2022-11-21 17:17:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:17:13,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 17:17:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:13,875 INFO L225 Difference]: With dead ends: 25 [2022-11-21 17:17:13,879 INFO L226 Difference]: Without dead ends: 23 [2022-11-21 17:17:13,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:13,903 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:13,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:17:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-21 17:17:13,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-21 17:17:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 22 states have internal predecessors, (22), 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) [2022-11-21 17:17:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2022-11-21 17:17:13,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 3 [2022-11-21 17:17:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:13,940 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2022-11-21 17:17:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2022-11-21 17:17:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:17:13,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:13,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:17:13,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:17:13,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-21 17:17:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976294282] [2022-11-21 17:17:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:14,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976294282] [2022-11-21 17:17:14,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976294282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:14,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:14,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:17:14,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896063638] [2022-11-21 17:17:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:14,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:17:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:17:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:14,061 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:14,086 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2022-11-21 17:17:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:17:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 17:17:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:14,088 INFO L225 Difference]: With dead ends: 21 [2022-11-21 17:17:14,088 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 17:17:14,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:14,090 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:14,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 17:17:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 17:17:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 20 states have internal predecessors, (20), 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) [2022-11-21 17:17:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2022-11-21 17:17:14,095 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 3 [2022-11-21 17:17:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:14,095 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2022-11-21 17:17:14,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2022-11-21 17:17:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:17:14,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:14,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:17:14,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:17:14,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash 28691810, now seen corresponding path program 1 times [2022-11-21 17:17:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:14,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270098015] [2022-11-21 17:17:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270098015] [2022-11-21 17:17:14,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270098015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:14,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:14,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:14,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342454601] [2022-11-21 17:17:14,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:14,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:17:14,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:17:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:14,189 INFO L87 Difference]: Start difference. First operand 21 states and 20 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) [2022-11-21 17:17:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:14,229 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2022-11-21 17:17:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:17:14,230 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 [2022-11-21 17:17:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:14,230 INFO L225 Difference]: With dead ends: 20 [2022-11-21 17:17:14,231 INFO L226 Difference]: Without dead ends: 20 [2022-11-21 17:17:14,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:17:14,232 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:14,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-21 17:17:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-21 17:17:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 19 states have internal predecessors, (19), 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) [2022-11-21 17:17:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2022-11-21 17:17:14,237 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 5 [2022-11-21 17:17:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:14,237 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2022-11-21 17:17:14,237 INFO L496 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) [2022-11-21 17:17:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2022-11-21 17:17:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:17:14,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:14,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:17:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:17:14,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2022-11-21 17:17:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:14,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271075872] [2022-11-21 17:17:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:14,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271075872] [2022-11-21 17:17:14,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271075872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:14,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199206086] [2022-11-21 17:17:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:17:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:17:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:14,439 INFO L87 Difference]: Start difference. First operand 20 states and 19 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) [2022-11-21 17:17:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:14,489 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-11-21 17:17:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:17:14,490 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 [2022-11-21 17:17:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:14,492 INFO L225 Difference]: With dead ends: 19 [2022-11-21 17:17:14,492 INFO L226 Difference]: Without dead ends: 19 [2022-11-21 17:17:14,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:17:14,494 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:14,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 10 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-21 17:17:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-21 17:17:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 states have internal predecessors, (18), 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) [2022-11-21 17:17:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2022-11-21 17:17:14,498 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 5 [2022-11-21 17:17:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:14,498 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2022-11-21 17:17:14,499 INFO L496 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) [2022-11-21 17:17:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2022-11-21 17:17:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:17:14,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:14,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:17:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:17:14,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash 889446090, now seen corresponding path program 1 times [2022-11-21 17:17:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:14,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385247800] [2022-11-21 17:17:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:14,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:14,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385247800] [2022-11-21 17:17:14,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385247800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:14,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:14,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:17:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102773257] [2022-11-21 17:17:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:14,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:17:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:17:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:17:14,644 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:14,696 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2022-11-21 17:17:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:17:14,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:17:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:14,697 INFO L225 Difference]: With dead ends: 18 [2022-11-21 17:17:14,697 INFO L226 Difference]: Without dead ends: 18 [2022-11-21 17:17:14,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:17:14,699 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:14,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-21 17:17:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-21 17:17:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 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) [2022-11-21 17:17:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2022-11-21 17:17:14,702 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 6 [2022-11-21 17:17:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:14,702 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2022-11-21 17:17:14,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2022-11-21 17:17:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:17:14,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:14,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:17:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:17:14,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 889446091, now seen corresponding path program 1 times [2022-11-21 17:17:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807310973] [2022-11-21 17:17:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:14,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807310973] [2022-11-21 17:17:14,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807310973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:14,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:14,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523155800] [2022-11-21 17:17:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:14,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:17:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:17:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:14,930 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:14,972 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2022-11-21 17:17:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:17:14,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:17:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:14,973 INFO L225 Difference]: With dead ends: 16 [2022-11-21 17:17:14,973 INFO L226 Difference]: Without dead ends: 16 [2022-11-21 17:17:14,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:17:14,978 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:14,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-21 17:17:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-21 17:17:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2022-11-21 17:17:14,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 6 [2022-11-21 17:17:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:14,988 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2022-11-21 17:17:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2022-11-21 17:17:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:17:14,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:14,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:17:14,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1835201350, now seen corresponding path program 1 times [2022-11-21 17:17:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932327905] [2022-11-21 17:17:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:15,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932327905] [2022-11-21 17:17:15,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932327905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:15,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:15,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655525735] [2022-11-21 17:17:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:15,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:17:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:17:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:15,068 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-21 17:17:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:15,095 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-21 17:17:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:17:15,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-21 17:17:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:15,097 INFO L225 Difference]: With dead ends: 15 [2022-11-21 17:17:15,098 INFO L226 Difference]: Without dead ends: 15 [2022-11-21 17:17:15,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:17:15,101 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:15,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-21 17:17:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-21 17:17:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 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) [2022-11-21 17:17:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-21 17:17:15,116 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 9 [2022-11-21 17:17:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:15,116 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-21 17:17:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-21 17:17:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-21 17:17:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 17:17:15,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:15,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:15,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:17:15,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:15,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1844696306, now seen corresponding path program 1 times [2022-11-21 17:17:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:15,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397844184] [2022-11-21 17:17:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:15,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397844184] [2022-11-21 17:17:15,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397844184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:15,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:15,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:17:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265757106] [2022-11-21 17:17:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:17:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:17:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:17:15,442 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:15,587 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-11-21 17:17:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:17:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 17:17:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:15,589 INFO L225 Difference]: With dead ends: 13 [2022-11-21 17:17:15,589 INFO L226 Difference]: Without dead ends: 13 [2022-11-21 17:17:15,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:17:15,590 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:15,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-21 17:17:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-21 17:17:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-11-21 17:17:15,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2022-11-21 17:17:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:15,593 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-11-21 17:17:15,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-11-21 17:17:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 17:17:15,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:15,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:17:15,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:17:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1844696371, now seen corresponding path program 1 times [2022-11-21 17:17:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:15,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846890848] [2022-11-21 17:17:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:15,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846890848] [2022-11-21 17:17:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846890848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:15,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:15,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970710823] [2022-11-21 17:17:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:17:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:17:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:15,735 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:15,754 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-11-21 17:17:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:17:15,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 17:17:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:15,755 INFO L225 Difference]: With dead ends: 12 [2022-11-21 17:17:15,755 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 17:17:15,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:17:15,756 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:15,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 17:17:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 17:17:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-21 17:17:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 17:17:15,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-21 17:17:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:15,758 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:17:15,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 17:17:15,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 17:17:15,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-21 17:17:15,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-21 17:17:15,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-21 17:17:15,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-21 17:17:15,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-21 17:17:15,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-21 17:17:15,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-21 17:17:15,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-21 17:17:15,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-21 17:17:15,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-21 17:17:15,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-21 17:17:15,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2022-11-21 17:17:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:17:15,767 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:15,769 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:17:15,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:17:15 BoogieIcfgContainer [2022-11-21 17:17:15,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:17:15,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:17:15,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:17:15,773 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:17:15,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:13" (3/4) ... [2022-11-21 17:17:15,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:17:15,787 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-21 17:17:15,787 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-21 17:17:15,787 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-21 17:17:15,788 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:17:15,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:17:15,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:17:15,826 INFO L158 Benchmark]: Toolchain (without parser) took 3171.80ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 90.9MB in the beginning and 131.1MB in the end (delta: -40.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:17:15,827 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:17:15,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.25ms. Allocated memory is still 136.3MB. Free memory was 90.5MB in the beginning and 80.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.53ms. Allocated memory is still 136.3MB. Free memory was 80.7MB in the beginning and 79.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,828 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 136.3MB. Free memory was 79.0MB in the beginning and 77.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,828 INFO L158 Benchmark]: RCFGBuilder took 392.21ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 77.9MB in the beginning and 136.7MB in the end (delta: -58.8MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,829 INFO L158 Benchmark]: TraceAbstraction took 2461.56ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 134.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,829 INFO L158 Benchmark]: Witness Printer took 53.17ms. Allocated memory is still 169.9MB. Free memory was 133.2MB in the beginning and 131.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:17:15,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.25ms. Allocated memory is still 136.3MB. Free memory was 90.5MB in the beginning and 80.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.53ms. Allocated memory is still 136.3MB. Free memory was 80.7MB in the beginning and 79.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 136.3MB. Free memory was 79.0MB in the beginning and 77.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.21ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 77.9MB in the beginning and 136.7MB in the end (delta: -58.8MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2461.56ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 134.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Witness Printer took 53.17ms. Allocated memory is still 169.9MB. Free memory was 133.2MB in the beginning and 131.1MB in the end (delta: 2.1MB). 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 70 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 17:17:15,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18599755-9d1a-408d-82bf-458404e071b2/bin/uautomizer-vX5HgA9Q3a/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 Result: TRUE