./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab --- 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-38b53e6 [2022-11-25 15:34:45,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:34:45,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:34:45,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:34:45,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:34:45,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:34:45,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:34:45,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:34:45,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:34:45,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:34:45,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:34:45,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:34:45,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:34:45,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:34:45,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:34:45,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:34:45,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:34:45,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:34:45,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:34:45,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:34:45,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:34:45,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:34:45,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:34:45,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:34:45,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:34:45,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:34:45,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:34:45,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:34:45,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:34:45,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:34:45,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:34:45,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:34:45,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:34:45,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:34:45,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:34:45,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:34:45,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:34:45,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:34:45,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:34:45,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:34:45,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:34:45,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:34:46,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:34:46,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:34:46,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:34:46,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:34:46,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:34:46,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:34:46,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:34:46,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:34:46,009 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:34:46,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:34:46,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:34:46,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:34:46,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:34:46,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:34:46,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:34:46,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:34:46,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:34:46,012 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:34:46,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:34:46,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:34:46,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:34:46,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:34:46,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:34:46,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:34:46,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:34:46,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:46,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:34:46,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:34:46,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:34:46,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:34:46,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:34:46,015 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:34:46,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:34:46,016 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab [2022-11-25 15:34:46,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:34:46,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:34:46,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:34:46,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:34:46,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:34:46,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-regression/test25-2.c [2022-11-25 15:34:49,295 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:34:49,595 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:34:49,596 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/sv-benchmarks/c/ldv-regression/test25-2.c [2022-11-25 15:34:49,602 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/data/8372f04bc/cd1fafa6de21405397487b5a680dc48c/FLAG674087ee5 [2022-11-25 15:34:49,621 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/data/8372f04bc/cd1fafa6de21405397487b5a680dc48c [2022-11-25 15:34:49,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:34:49,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:34:49,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:49,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:34:49,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:34:49,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17066e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49, skipping insertion in model container [2022-11-25 15:34:49,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:34:49,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:34:49,816 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2022-11-25 15:34:49,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:49,829 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:34:49,847 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2022-11-25 15:34:49,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:49,862 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:34:49,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49 WrapperNode [2022-11-25 15:34:49,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:49,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:49,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:34:49,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:34:49,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,899 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-11-25 15:34:49,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:49,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:34:49,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:34:49,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:34:49,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:34:49,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:34:49,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:34:49,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:34:49,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (1/1) ... [2022-11-25 15:34:49,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:49,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:34:49,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:34:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:34:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:34:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:34:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:34:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:34:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:34:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:34:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:34:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:34:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:34:50,144 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:34:50,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:34:50,390 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:34:50,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:34:50,399 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 15:34:50,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:34:50 BoogieIcfgContainer [2022-11-25 15:34:50,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:34:50,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:34:50,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:34:50,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:34:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:34:49" (1/3) ... [2022-11-25 15:34:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74250c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:34:50, skipping insertion in model container [2022-11-25 15:34:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:49" (2/3) ... [2022-11-25 15:34:50,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74250c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:34:50, skipping insertion in model container [2022-11-25 15:34:50,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:34:50" (3/3) ... [2022-11-25 15:34:50,411 INFO L112 eAbstractionObserver]: Analyzing ICFG test25-2.c [2022-11-25 15:34:50,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:34:50,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-25 15:34:50,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:34:50,501 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=PETRI_NET, 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;@5256c93e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:34:50,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 15:34:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 29 states have (on average 2.0) internal successors, (58), 51 states have internal predecessors, (58), 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) [2022-11-25 15:34:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 15:34:50,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:50,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 15:34:50,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-11-25 15:34:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074592400] [2022-11-25 15:34:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:50,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074592400] [2022-11-25 15:34:50,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074592400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:50,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:50,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:34:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390425742] [2022-11-25 15:34:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:34:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:34:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:34:50,927 INFO L87 Difference]: Start difference. First operand has 52 states, 29 states have (on average 2.0) internal successors, (58), 51 states have internal predecessors, (58), 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 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) [2022-11-25 15:34:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:50,995 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-11-25 15:34:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:34:50,997 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 [2022-11-25 15:34:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:51,005 INFO L225 Difference]: With dead ends: 49 [2022-11-25 15:34:51,005 INFO L226 Difference]: Without dead ends: 47 [2022-11-25 15:34:51,007 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 [2022-11-25 15:34:51,010 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:51,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 32 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-25 15:34:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-25 15:34:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 46 states have internal predecessors, (50), 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) [2022-11-25 15:34:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2022-11-25 15:34:51,044 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 4 [2022-11-25 15:34:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:51,045 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2022-11-25 15:34:51,045 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) [2022-11-25 15:34:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-11-25 15:34:51,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 15:34:51,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:51,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 15:34:51,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:34:51,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-11-25 15:34:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:51,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403676087] [2022-11-25 15:34:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:51,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403676087] [2022-11-25 15:34:51,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403676087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:51,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:51,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:34:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168169457] [2022-11-25 15:34:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:51,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:34:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:34:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:34:51,241 INFO L87 Difference]: Start difference. First operand 47 states and 50 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) [2022-11-25 15:34:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:51,345 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2022-11-25 15:34:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:34:51,346 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 [2022-11-25 15:34:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:51,347 INFO L225 Difference]: With dead ends: 53 [2022-11-25 15:34:51,347 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 15:34:51,348 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 [2022-11-25 15:34:51,349 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:51,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 15:34:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-25 15:34:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.6875) internal successors, (54), 50 states have internal predecessors, (54), 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) [2022-11-25 15:34:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-11-25 15:34:51,356 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 4 [2022-11-25 15:34:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:51,357 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-11-25 15:34:51,357 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) [2022-11-25 15:34:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-11-25 15:34:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 15:34:51,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:51,358 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:51,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:34:51,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 719163786, now seen corresponding path program 1 times [2022-11-25 15:34:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:51,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281789036] [2022-11-25 15:34:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281789036] [2022-11-25 15:34:51,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281789036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355982578] [2022-11-25 15:34:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:51,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:51,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:51,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:51,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:34:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:51,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:34:51,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:51,832 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:34:51,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 15:34:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:51,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355982578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:51,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:34:51,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:34:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730105023] [2022-11-25 15:34:51,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:34:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:34:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:34:51,999 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:52,241 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2022-11-25 15:34:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:34:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 15:34:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:52,243 INFO L225 Difference]: With dead ends: 137 [2022-11-25 15:34:52,244 INFO L226 Difference]: Without dead ends: 137 [2022-11-25 15:34:52,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:34:52,245 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 127 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:52,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 145 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:34:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-25 15:34:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 67. [2022-11-25 15:34:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5) internal successors, (72), 66 states have internal predecessors, (72), 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) [2022-11-25 15:34:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-11-25 15:34:52,254 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 10 [2022-11-25 15:34:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:52,254 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-11-25 15:34:52,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-11-25 15:34:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:34:52,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:52,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 15:34:52,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:52,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:52,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:52,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 197391391, now seen corresponding path program 1 times [2022-11-25 15:34:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:52,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330194131] [2022-11-25 15:34:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:52,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330194131] [2022-11-25 15:34:52,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330194131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449484011] [2022-11-25 15:34:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:52,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:52,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:52,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:34:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:52,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:34:52,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:52,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:52,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449484011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:52,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:34:52,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-25 15:34:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844012967] [2022-11-25 15:34:52,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:52,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:34:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:34:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:34:52,862 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2022-11-25 15:34:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:52,923 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-11-25 15:34:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:34:52,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 17 [2022-11-25 15:34:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:52,928 INFO L225 Difference]: With dead ends: 81 [2022-11-25 15:34:52,928 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 15:34:52,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:34:52,932 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:52,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 174 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 15:34:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2022-11-25 15:34:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.423728813559322) internal successors, (84), 77 states have internal predecessors, (84), 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) [2022-11-25 15:34:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-11-25 15:34:52,947 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 17 [2022-11-25 15:34:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:52,948 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-11-25 15:34:52,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2022-11-25 15:34:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-11-25 15:34:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 15:34:52,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:52,949 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1] [2022-11-25 15:34:52,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:53,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1183242029, now seen corresponding path program 1 times [2022-11-25 15:34:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671851869] [2022-11-25 15:34:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 15:34:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671851869] [2022-11-25 15:34:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671851869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:53,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:53,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:34:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674898288] [2022-11-25 15:34:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:34:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:34:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:53,437 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:53,515 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2022-11-25 15:34:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:34:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 15:34:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:53,517 INFO L225 Difference]: With dead ends: 77 [2022-11-25 15:34:53,517 INFO L226 Difference]: Without dead ends: 77 [2022-11-25 15:34:53,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:53,518 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:53,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-25 15:34:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-25 15:34:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 76 states have internal predecessors, (81), 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) [2022-11-25 15:34:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-11-25 15:34:53,522 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 24 [2022-11-25 15:34:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:53,523 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-11-25 15:34:53,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-11-25 15:34:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 15:34:53,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:53,524 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-25 15:34:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:34:53,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1808870570, now seen corresponding path program 2 times [2022-11-25 15:34:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:53,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891982853] [2022-11-25 15:34:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:53,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891982853] [2022-11-25 15:34:53,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891982853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:53,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926281294] [2022-11-25 15:34:53,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:53,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:53,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:53,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:34:53,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:34:53,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:34:53,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:54,018 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:34:54,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 15:34:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:54,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:54,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926281294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:54,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:34:54,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-25 15:34:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616426143] [2022-11-25 15:34:54,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:54,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:34:54,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:34:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:34:54,279 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2022-11-25 15:34:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:54,375 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2022-11-25 15:34:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:34:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) Word has length 28 [2022-11-25 15:34:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:54,376 INFO L225 Difference]: With dead ends: 76 [2022-11-25 15:34:54,377 INFO L226 Difference]: Without dead ends: 76 [2022-11-25 15:34:54,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:34:54,377 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 118 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:54,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 70 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:54,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-25 15:34:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-25 15:34:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 75 states have internal predecessors, (79), 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) [2022-11-25 15:34:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-11-25 15:34:54,396 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 28 [2022-11-25 15:34:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:54,397 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-11-25 15:34:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2022-11-25 15:34:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-11-25 15:34:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 15:34:54,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:54,399 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2022-11-25 15:34:54,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:54,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1568324367, now seen corresponding path program 2 times [2022-11-25 15:34:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:54,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776506535] [2022-11-25 15:34:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:54,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:54,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776506535] [2022-11-25 15:34:54,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776506535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:54,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765569585] [2022-11-25 15:34:54,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:54,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:34:54,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:34:54,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:54,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:34:54,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:54,977 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:34:54,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 15:34:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-25 15:34:55,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:55,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765569585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:55,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:34:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-11-25 15:34:55,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820537640] [2022-11-25 15:34:55,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:34:55,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:34:55,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:34:55,071 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:55,106 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2022-11-25 15:34:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:34:55,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-25 15:34:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:55,108 INFO L225 Difference]: With dead ends: 73 [2022-11-25 15:34:55,108 INFO L226 Difference]: Without dead ends: 73 [2022-11-25 15:34:55,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:34:55,109 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 26 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 [2022-11-25 15:34:55,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-25 15:34:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-25 15:34:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 72 states have internal predecessors, (76), 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) [2022-11-25 15:34:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-11-25 15:34:55,119 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 41 [2022-11-25 15:34:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:55,120 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-11-25 15:34:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-11-25 15:34:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 15:34:55,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:55,123 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2022-11-25 15:34:55,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 15:34:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:55,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1568324368, now seen corresponding path program 1 times [2022-11-25 15:34:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659580868] [2022-11-25 15:34:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:55,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:55,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659580868] [2022-11-25 15:34:55,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659580868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584624032] [2022-11-25 15:34:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:55,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:55,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:34:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:55,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:34:55,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:55,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:55,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584624032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:55,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:34:55,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-11-25 15:34:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655172746] [2022-11-25 15:34:55,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:34:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:34:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:34:55,973 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2022-11-25 15:34:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:56,055 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2022-11-25 15:34:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:34:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 41 [2022-11-25 15:34:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:56,056 INFO L225 Difference]: With dead ends: 97 [2022-11-25 15:34:56,056 INFO L226 Difference]: Without dead ends: 97 [2022-11-25 15:34:56,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:34:56,057 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:56,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 209 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-25 15:34:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-25 15:34:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 96 states have internal predecessors, (100), 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) [2022-11-25 15:34:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2022-11-25 15:34:56,068 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 41 [2022-11-25 15:34:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:56,068 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2022-11-25 15:34:56,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2022-11-25 15:34:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2022-11-25 15:34:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 15:34:56,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:56,069 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2022-11-25 15:34:56,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 15:34:56,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1241009664, now seen corresponding path program 2 times [2022-11-25 15:34:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206404357] [2022-11-25 15:34:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-25 15:34:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206404357] [2022-11-25 15:34:56,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206404357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:56,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910264262] [2022-11-25 15:34:56,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:56,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:56,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:56,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:56,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:34:56,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:34:56,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:34:56,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:56,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:56,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 15:34:56,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 15:34:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:34:57,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:57,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910264262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:57,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:34:57,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-25 15:34:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438372447] [2022-11-25 15:34:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:57,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:34:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:34:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:57,191 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:57,222 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-11-25 15:34:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:34:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-25 15:34:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:57,223 INFO L225 Difference]: With dead ends: 94 [2022-11-25 15:34:57,223 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 15:34:57,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:57,226 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:57,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 26 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 15:34:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-25 15:34:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 93 states have internal predecessors, (97), 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) [2022-11-25 15:34:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-11-25 15:34:57,231 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 65 [2022-11-25 15:34:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-11-25 15:34:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-11-25 15:34:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 15:34:57,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:57,234 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:57,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:57,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:57,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 183460697, now seen corresponding path program 1 times [2022-11-25 15:34:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200389584] [2022-11-25 15:34:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:34:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:57,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200389584] [2022-11-25 15:34:57,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200389584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:57,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:57,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:34:57,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671919681] [2022-11-25 15:34:57,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:34:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:34:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:34:57,963 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:57,998 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2022-11-25 15:34:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:34:57,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-25 15:34:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:58,000 INFO L225 Difference]: With dead ends: 93 [2022-11-25 15:34:58,001 INFO L226 Difference]: Without dead ends: 91 [2022-11-25 15:34:58,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:34:58,001 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:58,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 46 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:58,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-25 15:34:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-25 15:34:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 90 states have internal predecessors, (92), 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) [2022-11-25 15:34:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-11-25 15:34:58,007 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 66 [2022-11-25 15:34:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:58,008 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-11-25 15:34:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-11-25 15:34:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 15:34:58,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:58,014 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:34:58,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 651208261, now seen corresponding path program 1 times [2022-11-25 15:34:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:58,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35094438] [2022-11-25 15:34:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-25 15:34:58,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35094438] [2022-11-25 15:34:58,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35094438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:58,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:58,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:34:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326980500] [2022-11-25 15:34:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:34:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:34:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:58,333 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:58,383 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2022-11-25 15:34:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:34:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 15:34:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:58,384 INFO L225 Difference]: With dead ends: 90 [2022-11-25 15:34:58,384 INFO L226 Difference]: Without dead ends: 90 [2022-11-25 15:34:58,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:34:58,385 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:58,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 43 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-25 15:34:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-25 15:34:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.123456790123457) internal successors, (91), 89 states have internal predecessors, (91), 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) [2022-11-25 15:34:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-11-25 15:34:58,389 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 69 [2022-11-25 15:34:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-11-25 15:34:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-11-25 15:34:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 15:34:58,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:58,391 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:34:58,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 651208262, now seen corresponding path program 1 times [2022-11-25 15:34:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:58,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989037014] [2022-11-25 15:34:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:58,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:34:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:59,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989037014] [2022-11-25 15:34:59,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989037014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:59,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:59,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:34:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905183071] [2022-11-25 15:34:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:34:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:34:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:34:59,090 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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) [2022-11-25 15:34:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:59,222 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2022-11-25 15:34:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:34:59,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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 69 [2022-11-25 15:34:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:59,224 INFO L225 Difference]: With dead ends: 88 [2022-11-25 15:34:59,224 INFO L226 Difference]: Without dead ends: 88 [2022-11-25 15:34:59,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:34:59,224 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:59,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 64 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-25 15:34:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-25 15:34:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 87 states have internal predecessors, (89), 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) [2022-11-25 15:34:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-11-25 15:34:59,227 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 69 [2022-11-25 15:34:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:59,227 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-11-25 15:34:59,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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) [2022-11-25 15:34:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-11-25 15:34:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 15:34:59,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:59,228 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:34:59,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1709155083, now seen corresponding path program 1 times [2022-11-25 15:34:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198353147] [2022-11-25 15:34:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:34:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198353147] [2022-11-25 15:34:59,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198353147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:59,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:59,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:34:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560965582] [2022-11-25 15:34:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:34:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:34:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:34:59,404 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:59,466 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2022-11-25 15:34:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:34:59,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-25 15:34:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:59,467 INFO L225 Difference]: With dead ends: 87 [2022-11-25 15:34:59,467 INFO L226 Difference]: Without dead ends: 87 [2022-11-25 15:34:59,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:34:59,468 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:59,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 72 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-25 15:34:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-25 15:34:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 86 states have internal predecessors, (88), 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) [2022-11-25 15:34:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-11-25 15:34:59,471 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 73 [2022-11-25 15:34:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:59,472 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-11-25 15:34:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:34:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-11-25 15:34:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 15:34:59,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:59,473 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:34:59,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:34:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1709155084, now seen corresponding path program 1 times [2022-11-25 15:34:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:59,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198260423] [2022-11-25 15:34:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:00,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:00,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198260423] [2022-11-25 15:35:00,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198260423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:00,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:00,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:35:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41494069] [2022-11-25 15:35:00,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:35:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:00,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:35:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:00,359 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:00,614 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2022-11-25 15:35:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:35:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-25 15:35:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:00,615 INFO L225 Difference]: With dead ends: 86 [2022-11-25 15:35:00,615 INFO L226 Difference]: Without dead ends: 86 [2022-11-25 15:35:00,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:35:00,616 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:00,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 78 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-25 15:35:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-25 15:35:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 85 states have internal predecessors, (87), 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) [2022-11-25 15:35:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-11-25 15:35:00,618 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 73 [2022-11-25 15:35:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:00,619 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-11-25 15:35:00,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-11-25 15:35:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 15:35:00,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:00,620 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:00,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:35:00,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash 601809584, now seen corresponding path program 1 times [2022-11-25 15:35:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:00,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749229475] [2022-11-25 15:35:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:00,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749229475] [2022-11-25 15:35:00,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749229475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:00,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:00,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:35:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025352320] [2022-11-25 15:35:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:00,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:35:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:35:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:35:00,792 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:00,821 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2022-11-25 15:35:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:35:00,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 15:35:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:00,822 INFO L225 Difference]: With dead ends: 85 [2022-11-25 15:35:00,823 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 15:35:00,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:00,825 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:00,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:35:00,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 15:35:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-25 15:35:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 84 states have internal predecessors, (86), 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) [2022-11-25 15:35:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-11-25 15:35:00,828 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 76 [2022-11-25 15:35:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:00,828 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-11-25 15:35:00,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-11-25 15:35:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 15:35:00,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:00,829 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:35:00,830 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 601809585, now seen corresponding path program 1 times [2022-11-25 15:35:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:00,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773043237] [2022-11-25 15:35:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773043237] [2022-11-25 15:35:01,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773043237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:01,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:01,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:35:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3259467] [2022-11-25 15:35:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:01,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:01,132 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:01,165 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-11-25 15:35:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:35:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 15:35:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:01,167 INFO L225 Difference]: With dead ends: 84 [2022-11-25 15:35:01,167 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 15:35:01,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:35:01,168 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:01,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:35:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 15:35:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-25 15:35:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 83 states have internal predecessors, (85), 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) [2022-11-25 15:35:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-11-25 15:35:01,171 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 76 [2022-11-25 15:35:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:01,172 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-11-25 15:35:01,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-11-25 15:35:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:35:01,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:01,173 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:01,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:35:01,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1476227956, now seen corresponding path program 1 times [2022-11-25 15:35:01,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:01,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343799311] [2022-11-25 15:35:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:01,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343799311] [2022-11-25 15:35:01,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343799311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:01,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:01,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:35:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858177765] [2022-11-25 15:35:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:01,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:35:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:35:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:35:01,492 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-11-25 15:35:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:01,572 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-11-25 15:35:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:35:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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 77 [2022-11-25 15:35:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:01,573 INFO L225 Difference]: With dead ends: 84 [2022-11-25 15:35:01,573 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 15:35:01,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:01,575 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:01,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:35:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 15:35:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-11-25 15:35:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.037037037037037) internal successors, (84), 82 states have internal predecessors, (84), 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) [2022-11-25 15:35:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2022-11-25 15:35:01,577 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77 [2022-11-25 15:35:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:01,578 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2022-11-25 15:35:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-11-25 15:35:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2022-11-25 15:35:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:35:01,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:01,579 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:35:01,579 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1476227957, now seen corresponding path program 1 times [2022-11-25 15:35:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:01,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387379596] [2022-11-25 15:35:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387379596] [2022-11-25 15:35:02,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387379596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:02,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:02,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 15:35:02,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110283708] [2022-11-25 15:35:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:35:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:35:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:35:02,590 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-11-25 15:35:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:02,828 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2022-11-25 15:35:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:35:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 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 77 [2022-11-25 15:35:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:02,830 INFO L225 Difference]: With dead ends: 82 [2022-11-25 15:35:02,830 INFO L226 Difference]: Without dead ends: 82 [2022-11-25 15:35:02,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:35:02,831 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:02,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 87 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-25 15:35:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-25 15:35:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 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) [2022-11-25 15:35:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-11-25 15:35:02,833 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 77 [2022-11-25 15:35:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:02,834 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-11-25 15:35:02,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-11-25 15:35:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-11-25 15:35:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 15:35:02,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:02,835 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:02,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:35:02,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1820390240, now seen corresponding path program 1 times [2022-11-25 15:35:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:02,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821817031] [2022-11-25 15:35:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:02,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821817031] [2022-11-25 15:35:11,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821817031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120257824] [2022-11-25 15:35:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:11,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:11,745 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:35:11,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:35:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:12,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-25 15:35:12,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:12,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:35:12,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:35:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:35:13,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:13,859 INFO L321 Elim1Store]: treesize reduction 4, result has 93.4 percent of original size [2022-11-25 15:35:13,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 84 [2022-11-25 15:35:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:14,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120257824] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:14,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:14,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [23, 18] total 51 [2022-11-25 15:35:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422634051] [2022-11-25 15:35:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:35:14,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:35:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2367, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 15:35:14,127 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:14,597 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2022-11-25 15:35:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:35:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-25 15:35:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:14,608 INFO L225 Difference]: With dead ends: 90 [2022-11-25 15:35:14,608 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 15:35:14,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 15:35:14,610 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:14,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 144 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:35:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 15:35:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-25 15:35:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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) [2022-11-25 15:35:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-11-25 15:35:14,613 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2022-11-25 15:35:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:14,613 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-11-25 15:35:14,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-11-25 15:35:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 15:35:14,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:14,617 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:14,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:14,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:14,824 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 15:35:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 611096345, now seen corresponding path program 1 times [2022-11-25 15:35:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:14,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573281774] [2022-11-25 15:35:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 90 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573281774] [2022-11-25 15:35:21,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573281774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440621283] [2022-11-25 15:35:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:21,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:21,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:35:21,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:35:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-25 15:35:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:21,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:35:21,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:35:22,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-25 15:35:22,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-25 15:35:22,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 15:35:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:22,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:22,493 INFO L321 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2022-11-25 15:35:22,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 41 [2022-11-25 15:35:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:35:22,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440621283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:22,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:35:22,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 14, 13] total 48 [2022-11-25 15:35:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466870373] [2022-11-25 15:35:22,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 15:35:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 15:35:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2088, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 15:35:22,637 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 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) [2022-11-25 15:35:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:25,736 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2022-11-25 15:35:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 15:35:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 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 83 [2022-11-25 15:35:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:25,737 INFO L225 Difference]: With dead ends: 82 [2022-11-25 15:35:25,737 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 15:35:25,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=575, Invalid=4827, Unknown=0, NotChecked=0, Total=5402 [2022-11-25 15:35:25,740 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:25,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 683 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:35:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 15:35:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 15:35:25,741 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) [2022-11-25 15:35:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 15:35:25,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2022-11-25 15:35:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:25,742 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:35:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 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) [2022-11-25 15:35:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 15:35:25,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 15:35:25,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2022-11-25 15:35:25,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-11-25 15:35:25,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-11-25 15:35:25,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-11-25 15:35:25,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-11-25 15:35:25,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-11-25 15:35:25,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-11-25 15:35:25,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-11-25 15:35:25,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-11-25 15:35:25,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-11-25 15:35:25,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-11-25 15:35:25,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-11-25 15:35:25,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-11-25 15:35:25,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-11-25 15:35:25,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-11-25 15:35:25,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2022-11-25 15:35:25,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2022-11-25 15:35:25,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2022-11-25 15:35:25,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2022-11-25 15:35:25,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2022-11-25 15:35:25,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (1 of 22 remaining) [2022-11-25 15:35:25,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (0 of 22 remaining) [2022-11-25 15:35:25,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:25,960 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:25,962 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:35:25,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:35:25 BoogieIcfgContainer [2022-11-25 15:35:25,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:35:25,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:35:25,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:35:25,965 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:35:25,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:34:50" (3/4) ... [2022-11-25 15:35:25,969 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:35:25,977 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-25 15:35:25,978 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 15:35:25,978 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 15:35:25,978 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:35:26,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:35:26,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:35:26,016 INFO L158 Benchmark]: Toolchain (without parser) took 36387.64ms. Allocated memory was 228.6MB in the beginning and 784.3MB in the end (delta: 555.7MB). Free memory was 194.2MB in the beginning and 297.3MB in the end (delta: -103.1MB). Peak memory consumption was 455.3MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,017 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:35:26,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.87ms. Allocated memory is still 228.6MB. Free memory was 194.2MB in the beginning and 183.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.35ms. Allocated memory is still 228.6MB. Free memory was 183.3MB in the beginning and 181.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,018 INFO L158 Benchmark]: Boogie Preprocessor took 26.72ms. Allocated memory is still 228.6MB. Free memory was 181.2MB in the beginning and 179.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,018 INFO L158 Benchmark]: RCFGBuilder took 474.60ms. Allocated memory is still 228.6MB. Free memory was 179.8MB in the beginning and 164.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,018 INFO L158 Benchmark]: TraceAbstraction took 35560.24ms. Allocated memory was 228.6MB in the beginning and 784.3MB in the end (delta: 555.7MB). Free memory was 163.7MB in the beginning and 300.4MB in the end (delta: -136.8MB). Peak memory consumption was 419.7MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,018 INFO L158 Benchmark]: Witness Printer took 50.81ms. Allocated memory is still 784.3MB. Free memory was 300.4MB in the beginning and 297.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 15:35:26,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.87ms. Allocated memory is still 228.6MB. Free memory was 194.2MB in the beginning and 183.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.35ms. Allocated memory is still 228.6MB. Free memory was 183.3MB in the beginning and 181.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.72ms. Allocated memory is still 228.6MB. Free memory was 181.2MB in the beginning and 179.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.60ms. Allocated memory is still 228.6MB. Free memory was 179.8MB in the beginning and 164.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 35560.24ms. Allocated memory was 228.6MB in the beginning and 784.3MB in the end (delta: 555.7MB). Free memory was 163.7MB in the beginning and 300.4MB in the end (delta: -136.8MB). Peak memory consumption was 419.7MB. Max. memory is 16.1GB. * Witness Printer took 50.81ms. Allocated memory is still 784.3MB. Free memory was 300.4MB in the beginning and 297.3MB 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: 50]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 22]: 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, 52 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 35.5s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 847 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 847 mSDsluCounter, 2154 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1636 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2933 IncrementalHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 518 mSDtfsCounter, 2933 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 798 GetRequests, 544 SyntacticMatches, 5 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=8, InterpolantAutomatonStates: 151, 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, 20 MinimizatonAttempts, 76 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 25.1s InterpolantComputationTime, 1420 NumberOfCodeBlocks, 1324 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1619 ConstructedInterpolants, 0 QuantifiedInterpolants, 12363 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1977 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 33 InterpolantComputations, 16 PerfectInterpolantSequences, 4178/5394 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:35:26,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65e5ef0-3a45-440e-9624-49f2f5fcbc37/bin/uautomizer-ZsLfNo2U6R/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