./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 468953385e0ecb57effbe4a67e36beea0bc9797d81fab044af341dde527767a1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:06:45,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:06:45,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:06:45,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:06:45,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:06:45,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:06:45,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:06:45,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:06:45,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:06:45,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:06:45,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:06:45,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:06:45,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:06:45,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:06:45,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:06:45,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:06:45,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:06:45,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:06:45,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:06:45,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:06:45,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:06:45,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:06:45,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:06:45,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:06:45,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:06:45,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:06:45,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:06:45,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:06:45,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:06:45,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:06:45,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:06:45,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:06:45,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:06:45,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:06:45,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:06:45,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:06:45,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:06:45,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:06:45,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:06:45,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:06:45,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:06:45,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-16 12:06:45,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:06:45,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:06:45,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:06:45,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:06:45,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:06:45,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:06:46,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:06:46,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:06:46,001 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:06:46,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:06:46,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:06:46,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:06:46,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:06:46,002 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:06:46,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:06:46,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:06:46,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:06:46,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:06:46,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:06:46,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:06:46,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:06:46,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:06:46,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:46,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:06:46,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:06:46,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:06:46,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:06:46,008 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_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 468953385e0ecb57effbe4a67e36beea0bc9797d81fab044af341dde527767a1 [2022-11-16 12:06:46,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:06:46,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:06:46,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:06:46,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:06:46,403 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:06:46,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i [2022-11-16 12:06:46,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/data/e69194766/e84762390a4e4e2e884abc0e328e9c16/FLAGcc5cd0b75 [2022-11-16 12:06:47,131 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:06:47,139 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i [2022-11-16 12:06:47,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/data/e69194766/e84762390a4e4e2e884abc0e328e9c16/FLAGcc5cd0b75 [2022-11-16 12:06:47,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/data/e69194766/e84762390a4e4e2e884abc0e328e9c16 [2022-11-16 12:06:47,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:06:47,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:06:47,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:47,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:06:47,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:06:47,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97568d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47, skipping insertion in model container [2022-11-16 12:06:47,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:06:47,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:06:47,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:47,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:06:47,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:47,903 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:06:47,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47 WrapperNode [2022-11-16 12:06:47,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:47,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:47,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:06:47,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:06:47,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,970 INFO L138 Inliner]: procedures = 111, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-11-16 12:06:47,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:47,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:06:47,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:06:47,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:06:47,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:47,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:06:48,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:06:48,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:06:48,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:06:48,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (1/1) ... [2022-11-16 12:06:48,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:48,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:48,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:06:48,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:06:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:06:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:06:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:06:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:06:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:06:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:06:48,259 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:06:48,261 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:06:48,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:06:48,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:06:48,592 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:06:48,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:48 BoogieIcfgContainer [2022-11-16 12:06:48,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:06:48,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:06:48,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:06:48,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:06:48,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:06:47" (1/3) ... [2022-11-16 12:06:48,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9ab79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:48, skipping insertion in model container [2022-11-16 12:06:48,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:47" (2/3) ... [2022-11-16 12:06:48,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9ab79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:48, skipping insertion in model container [2022-11-16 12:06:48,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:48" (3/3) ... [2022-11-16 12:06:48,605 INFO L112 eAbstractionObserver]: Analyzing ICFG b.07-alloca.i [2022-11-16 12:06:48,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:06:48,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-11-16 12:06:48,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:48,695 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;@56506682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:48,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-16 12:06:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 25 states have (on average 2.2) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:06:48,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:48,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:06:48,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:48,715 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-16 12:06:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:48,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595825503] [2022-11-16 12:06:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:49,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:49,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595825503] [2022-11-16 12:06:49,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595825503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:49,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:49,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196281179] [2022-11-16 12:06:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:49,398 INFO L87 Difference]: Start difference. First operand has 53 states, 25 states have (on average 2.2) internal successors, (55), 52 states have internal predecessors, (55), 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) [2022-11-16 12:06:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:49,536 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-11-16 12:06:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:49,539 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 [2022-11-16 12:06:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:49,548 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:06:49,549 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:06:49,551 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 [2022-11-16 12:06:49,560 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:49,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:06:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:06:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:06:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 2.0) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-11-16 12:06:49,608 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 3 [2022-11-16 12:06:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:49,608 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-11-16 12:06:49,610 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) [2022-11-16 12:06:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-11-16 12:06:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:06:49,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:49,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:06:49,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:06:49,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-16 12:06:49,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:49,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184811908] [2022-11-16 12:06:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:49,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184811908] [2022-11-16 12:06:49,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184811908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:49,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:49,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248286696] [2022-11-16 12:06:49,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:49,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:49,944 INFO L87 Difference]: Start difference. First operand 47 states and 48 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) [2022-11-16 12:06:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:50,012 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2022-11-16 12:06:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:50,012 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 [2022-11-16 12:06:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:50,013 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:06:50,014 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:06:50,014 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 [2022-11-16 12:06:50,017 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:50,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:06:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:06:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 12:06:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-11-16 12:06:50,023 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 3 [2022-11-16 12:06:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:50,024 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-11-16 12:06:50,024 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) [2022-11-16 12:06:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-11-16 12:06:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:06:50,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:50,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:06:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:06:50,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2022-11-16 12:06:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267177088] [2022-11-16 12:06:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267177088] [2022-11-16 12:06:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267177088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261246967] [2022-11-16 12:06:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:50,305 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:50,379 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2022-11-16 12:06:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:06:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:50,381 INFO L225 Difference]: With dead ends: 39 [2022-11-16 12:06:50,381 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 12:06:50,382 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 [2022-11-16 12:06:50,387 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:50,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:06:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 12:06:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-16 12:06:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-11-16 12:06:50,392 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 4 [2022-11-16 12:06:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-11-16 12:06:50,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-11-16 12:06:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:06:50,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:50,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:06:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:06:50,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2022-11-16 12:06:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143921066] [2022-11-16 12:06:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143921066] [2022-11-16 12:06:50,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143921066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884059990] [2022-11-16 12:06:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:50,531 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:50,570 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-11-16 12:06:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:06:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:50,572 INFO L225 Difference]: With dead ends: 35 [2022-11-16 12:06:50,572 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 12:06:50,572 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 [2022-11-16 12:06:50,573 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:50,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 19 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 12:06:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-16 12:06:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-16 12:06:50,577 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 4 [2022-11-16 12:06:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:50,578 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-16 12:06:50,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-16 12:06:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:06:50,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:50,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:06:50,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:06:50,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2022-11-16 12:06:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556826768] [2022-11-16 12:06:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556826768] [2022-11-16 12:06:50,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556826768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101536936] [2022-11-16 12:06:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:50,692 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:50,727 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-16 12:06:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:50,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:06:50,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:50,729 INFO L225 Difference]: With dead ends: 32 [2022-11-16 12:06:50,729 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 12:06:50,729 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 [2022-11-16 12:06:50,730 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:50,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 12:06:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 12:06:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.375) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-16 12:06:50,735 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 5 [2022-11-16 12:06:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:50,735 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-16 12:06:50,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-16 12:06:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:06:50,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:50,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:06:50,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:06:50,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,737 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2022-11-16 12:06:50,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405541123] [2022-11-16 12:06:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405541123] [2022-11-16 12:06:50,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405541123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239621732] [2022-11-16 12:06:50,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:50,859 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:50,888 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-11-16 12:06:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:06:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:50,890 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:06:50,890 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:06:50,890 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 [2022-11-16 12:06:50,891 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:50,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:06:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:06:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-16 12:06:50,895 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2022-11-16 12:06:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:50,896 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-16 12:06:50,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-16 12:06:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:06:50,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:50,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:06:50,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:06:50,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash 889446154, now seen corresponding path program 1 times [2022-11-16 12:06:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:50,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831588281] [2022-11-16 12:06:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:50,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831588281] [2022-11-16 12:06:50,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831588281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:50,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:50,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038737505] [2022-11-16 12:06:50,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:50,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:50,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:50,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:50,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:50,972 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 12:06:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:51,012 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-16 12:06:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:51,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-16 12:06:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:51,015 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:06:51,015 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:06:51,016 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 [2022-11-16 12:06:51,017 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:51,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:06:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 12:06:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-16 12:06:51,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 6 [2022-11-16 12:06:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:51,033 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-16 12:06:51,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 12:06:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-16 12:06:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:06:51,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:51,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:06:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:06:51,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash 889446155, now seen corresponding path program 1 times [2022-11-16 12:06:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:51,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055373821] [2022-11-16 12:06:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:51,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055373821] [2022-11-16 12:06:51,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055373821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:51,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:51,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:06:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851821351] [2022-11-16 12:06:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:51,160 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 12:06:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:51,195 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-16 12:06:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-16 12:06:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:51,200 INFO L225 Difference]: With dead ends: 25 [2022-11-16 12:06:51,200 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 12:06:51,200 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 [2022-11-16 12:06:51,201 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 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 [2022-11-16 12:06:51,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 12:06:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 12:06:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-16 12:06:51,214 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 6 [2022-11-16 12:06:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-16 12:06:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 12:06:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-16 12:06:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:06:51,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:51,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:51,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:06:51,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-16 12:06:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:51,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1461214602, now seen corresponding path program 1 times [2022-11-16 12:06:51,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:51,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637336557] [2022-11-16 12:06:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:51,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637336557] [2022-11-16 12:06:52,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637336557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:52,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:52,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:06:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789891386] [2022-11-16 12:06:52,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:06:52,165 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:52,227 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-16 12:06:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:06:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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) Word has length 15 [2022-11-16 12:06:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:52,229 INFO L225 Difference]: With dead ends: 24 [2022-11-16 12:06:52,229 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:06:52,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:06:52,230 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:52,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 20 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:06:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:06:52,231 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) [2022-11-16 12:06:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:06:52,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-16 12:06:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:52,232 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:06:52,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:06:52,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:06:52,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2022-11-16 12:06:52,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2022-11-16 12:06:52,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2022-11-16 12:06:52,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2022-11-16 12:06:52,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2022-11-16 12:06:52,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2022-11-16 12:06:52,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2022-11-16 12:06:52,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2022-11-16 12:06:52,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2022-11-16 12:06:52,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2022-11-16 12:06:52,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2022-11-16 12:06:52,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2022-11-16 12:06:52,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2022-11-16 12:06:52,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2022-11-16 12:06:52,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2022-11-16 12:06:52,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2022-11-16 12:06:52,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2022-11-16 12:06:52,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 27 remaining) [2022-11-16 12:06:52,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 27 remaining) [2022-11-16 12:06:52,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2022-11-16 12:06:52,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2022-11-16 12:06:52,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2022-11-16 12:06:52,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2022-11-16 12:06:52,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2022-11-16 12:06:52,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2022-11-16 12:06:52,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2022-11-16 12:06:52,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 27 remaining) [2022-11-16 12:06:52,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:06:52,246 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:52,249 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:06:52,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:06:52 BoogieIcfgContainer [2022-11-16 12:06:52,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:06:52,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:06:52,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:06:52,256 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:06:52,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:48" (3/4) ... [2022-11-16 12:06:52,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:06:52,281 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-16 12:06:52,281 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:06:52,282 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:06:52,282 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:06:52,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:06:52,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:06:52,331 INFO L158 Benchmark]: Toolchain (without parser) took 4911.54ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 58.9MB in the beginning and 92.7MB in the end (delta: -33.8MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,332 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 96.5MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:06:52,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.43ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 67.8MB in the end (delta: -9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.78ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 65.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,333 INFO L158 Benchmark]: Boogie Preprocessor took 52.10ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 64.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:06:52,333 INFO L158 Benchmark]: RCFGBuilder took 570.25ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 49.1MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,334 INFO L158 Benchmark]: TraceAbstraction took 3657.85ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 48.7MB in the beginning and 95.8MB in the end (delta: -47.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,335 INFO L158 Benchmark]: Witness Printer took 74.78ms. Allocated memory is still 153.1MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:06:52,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 96.5MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.43ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 67.8MB in the end (delta: -9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.78ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 65.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.10ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 64.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 570.25ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 49.1MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3657.85ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 48.7MB in the beginning and 95.8MB in the end (delta: -47.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 74.78ms. Allocated memory is still 153.1MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: -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: -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: 563]: 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, 53 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 298 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 298 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 145 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 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 27 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:06:52,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb710fb8-d779-498d-b7ee-e7766f2a5a30/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE