./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8 --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 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e --- 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-2329fc7 [2022-12-13 20:57:57,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:57:57,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:57:57,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:57:57,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:57:57,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:57:57,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:57:57,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:57:57,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:57:57,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:57:57,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:57:57,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:57:57,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:57:57,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:57:57,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:57:57,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:57:57,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:57:57,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:57:57,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:57:57,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:57:57,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:57:57,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:57:57,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:57:57,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:57:57,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:57:57,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:57:57,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:57:57,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:57:57,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:57:57,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:57:57,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:57:57,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:57:57,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:57:57,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:57:57,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:57:57,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:57:57,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:57:57,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:57:57,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:57:57,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:57:57,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:57:57,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:57:57,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:57:57,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:57:57,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:57:57,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:57:57,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:57:57,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:57:57,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:57:57,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:57:57,730 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:57:57,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:57:57,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:57:57,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:57:57,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:57:57,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:57:57,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:57:57,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:57:57,739 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:57:57,739 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_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e [2022-12-13 20:57:57,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:57:57,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:57:57,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:57:57,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:57:57,925 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:57:57,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-12-13 20:58:00,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:58:00,696 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:58:00,697 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-12-13 20:58:00,704 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/data/a51eb60da/f0cef33b9eb946939d2beda78e1690cb/FLAGb8ef63d15 [2022-12-13 20:58:00,715 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/data/a51eb60da/f0cef33b9eb946939d2beda78e1690cb [2022-12-13 20:58:00,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:58:00,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:58:00,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:58:00,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:58:00,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:58:00,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547a33a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00, skipping insertion in model container [2022-12-13 20:58:00,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:58:00,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:58:00,963 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_dcafd551-0b87-4e09-8932-a873c2fb72a1/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-12-13 20:58:00,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:58:00,976 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:58:01,001 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_dcafd551-0b87-4e09-8932-a873c2fb72a1/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-12-13 20:58:01,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:58:01,019 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:58:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01 WrapperNode [2022-12-13 20:58:01,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:58:01,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:58:01,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:58:01,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:58:01,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,049 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2022-12-13 20:58:01,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:58:01,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:58:01,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:58:01,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:58:01,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:58:01,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:58:01,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:58:01,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:58:01,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (1/1) ... [2022-12-13 20:58:01,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:58:01,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:01,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:58:01,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:58:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:58:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:58:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:58:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:58:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:58:01,227 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:58:01,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:58:01,553 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:58:01,560 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:58:01,561 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 20:58:01,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:58:01 BoogieIcfgContainer [2022-12-13 20:58:01,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:58:01,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:58:01,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:58:01,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:58:01,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:58:00" (1/3) ... [2022-12-13 20:58:01,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec8917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:58:01, skipping insertion in model container [2022-12-13 20:58:01,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:01" (2/3) ... [2022-12-13 20:58:01,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec8917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:58:01, skipping insertion in model container [2022-12-13 20:58:01,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:58:01" (3/3) ... [2022-12-13 20:58:01,572 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2022-12-13 20:58:01,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:58:01,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-12-13 20:58:01,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:58:01,631 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;@37b29184, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:58:01,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-12-13 20:58:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 122 states have internal predecessors, (139), 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) [2022-12-13 20:58:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 20:58:01,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:01,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 20:58:01,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-12-13 20:58:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:01,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626937972] [2022-12-13 20:58:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:01,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626937972] [2022-12-13 20:58:01,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626937972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:01,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:01,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:58:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286371956] [2022-12-13 20:58:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:58:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:58:01,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:58:01,833 INFO L87 Difference]: Start difference. First operand has 123 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 122 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:01,964 INFO L93 Difference]: Finished difference Result 150 states and 159 transitions. [2022-12-13 20:58:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:58:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 20:58:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:01,973 INFO L225 Difference]: With dead ends: 150 [2022-12-13 20:58:01,973 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 20:58:01,975 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 [2022-12-13 20:58:01,977 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 109 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 120 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 20:58:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 117. [2022-12-13 20:58:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 116 states have internal predecessors, (124), 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) [2022-12-13 20:58:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2022-12-13 20:58:02,005 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 3 [2022-12-13 20:58:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:02,006 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2022-12-13 20:58:02,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2022-12-13 20:58:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 20:58:02,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:02,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 20:58:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:58:02,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-12-13 20:58:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:02,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047035123] [2022-12-13 20:58:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:02,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:02,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047035123] [2022-12-13 20:58:02,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047035123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:02,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:02,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:58:02,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111224869] [2022-12-13 20:58:02,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:02,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:58:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:58:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:58:02,079 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:02,182 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2022-12-13 20:58:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:58:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 20:58:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:02,184 INFO L225 Difference]: With dead ends: 143 [2022-12-13 20:58:02,184 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 20:58:02,184 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 [2022-12-13 20:58:02,185 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 104 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:02,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 20:58:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2022-12-13 20:58:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 113 states have internal predecessors, (121), 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) [2022-12-13 20:58:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2022-12-13 20:58:02,195 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 3 [2022-12-13 20:58:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:02,195 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2022-12-13 20:58:02,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2022-12-13 20:58:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 20:58:02,196 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:02,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:02,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:58:02,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2022-12-13 20:58:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:02,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6504358] [2022-12-13 20:58:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:02,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6504358] [2022-12-13 20:58:02,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6504358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:02,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:02,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:58:02,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723226739] [2022-12-13 20:58:02,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:02,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:58:02,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:58:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:58:02,360 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:02,475 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2022-12-13 20:58:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 20:58:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:02,476 INFO L225 Difference]: With dead ends: 114 [2022-12-13 20:58:02,476 INFO L226 Difference]: Without dead ends: 114 [2022-12-13 20:58:02,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:02,477 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 165 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:02,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 47 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-13 20:58:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-12-13 20:58:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 105 states have internal predecessors, (119), 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) [2022-12-13 20:58:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2022-12-13 20:58:02,482 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 9 [2022-12-13 20:58:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:02,483 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2022-12-13 20:58:02,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2022-12-13 20:58:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 20:58:02,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:02,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:58:02,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2022-12-13 20:58:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:02,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963840446] [2022-12-13 20:58:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963840446] [2022-12-13 20:58:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963840446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:02,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:02,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:58:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811861161] [2022-12-13 20:58:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:02,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:58:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:58:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:58:02,626 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:02,809 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-12-13 20:58:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 20:58:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:02,810 INFO L225 Difference]: With dead ends: 149 [2022-12-13 20:58:02,810 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 20:58:02,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:02,811 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 354 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:02,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 62 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 20:58:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 126. [2022-12-13 20:58:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 92 states have (on average 1.565217391304348) internal successors, (144), 125 states have internal predecessors, (144), 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) [2022-12-13 20:58:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2022-12-13 20:58:02,816 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 9 [2022-12-13 20:58:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:02,816 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2022-12-13 20:58:02,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2022-12-13 20:58:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:58:02,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:02,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:02,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:58:02,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2022-12-13 20:58:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578172235] [2022-12-13 20:58:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:02,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578172235] [2022-12-13 20:58:02,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578172235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:02,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:02,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348147386] [2022-12-13 20:58:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:02,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:02,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:02,953 INFO L87 Difference]: Start difference. First operand 126 states and 144 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) [2022-12-13 20:58:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,097 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2022-12-13 20:58:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:58:03,097 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 12 [2022-12-13 20:58:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,099 INFO L225 Difference]: With dead ends: 125 [2022-12-13 20:58:03,099 INFO L226 Difference]: Without dead ends: 125 [2022-12-13 20:58:03,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:03,100 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 216 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-13 20:58:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-12-13 20:58:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 124 states have internal predecessors, (142), 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) [2022-12-13 20:58:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2022-12-13 20:58:03,108 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 12 [2022-12-13 20:58:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:03,108 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2022-12-13 20:58:03,108 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) [2022-12-13 20:58:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2022-12-13 20:58:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:58:03,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:03,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:03,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:58:03,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2022-12-13 20:58:03,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:03,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561267411] [2022-12-13 20:58:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:03,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561267411] [2022-12-13 20:58:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561267411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:03,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:03,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561583699] [2022-12-13 20:58:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:03,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:03,188 INFO L87 Difference]: Start difference. First operand 125 states and 142 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) [2022-12-13 20:58:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,308 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2022-12-13 20:58:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:58:03,309 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 12 [2022-12-13 20:58:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,310 INFO L225 Difference]: With dead ends: 124 [2022-12-13 20:58:03,310 INFO L226 Difference]: Without dead ends: 124 [2022-12-13 20:58:03,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:03,311 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 226 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-13 20:58:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-13 20:58:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 92 states have (on average 1.5217391304347827) internal successors, (140), 123 states have internal predecessors, (140), 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) [2022-12-13 20:58:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2022-12-13 20:58:03,315 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 12 [2022-12-13 20:58:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:03,315 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2022-12-13 20:58:03,315 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) [2022-12-13 20:58:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2022-12-13 20:58:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 20:58:03,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:03,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:58:03,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:03,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:03,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1478309260, now seen corresponding path program 1 times [2022-12-13 20:58:03,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228898706] [2022-12-13 20:58:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:03,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:03,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228898706] [2022-12-13 20:58:03,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228898706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:03,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:03,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:58:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142175281] [2022-12-13 20:58:03,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:03,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:03,442 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 20:58:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,565 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2022-12-13 20:58:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:58:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-13 20:58:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,566 INFO L225 Difference]: With dead ends: 132 [2022-12-13 20:58:03,566 INFO L226 Difference]: Without dead ends: 132 [2022-12-13 20:58:03,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:03,567 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 266 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-13 20:58:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-12-13 20:58:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 127 states have internal predecessors, (145), 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) [2022-12-13 20:58:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2022-12-13 20:58:03,571 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 16 [2022-12-13 20:58:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:03,571 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2022-12-13 20:58:03,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 20:58:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2022-12-13 20:58:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 20:58:03,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:03,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:58:03,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2022-12-13 20:58:03,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:03,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059949166] [2022-12-13 20:58:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:03,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:03,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:03,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059949166] [2022-12-13 20:58:03,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059949166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:03,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:03,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:58:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489585684] [2022-12-13 20:58:03,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:03,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:58:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:58:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:58:03,710 INFO L87 Difference]: Start difference. First operand 128 states and 145 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-12-13 20:58:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,996 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2022-12-13 20:58:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 20:58:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 16 [2022-12-13 20:58:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,997 INFO L225 Difference]: With dead ends: 132 [2022-12-13 20:58:03,997 INFO L226 Difference]: Without dead ends: 132 [2022-12-13 20:58:03,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:58:03,998 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 158 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 167 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-13 20:58:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-12-13 20:58:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 96 states have (on average 1.5) internal successors, (144), 126 states have internal predecessors, (144), 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) [2022-12-13 20:58:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2022-12-13 20:58:04,003 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 16 [2022-12-13 20:58:04,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:04,004 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2022-12-13 20:58:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-12-13 20:58:04,004 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2022-12-13 20:58:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 20:58:04,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:04,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:58:04,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2022-12-13 20:58:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455783936] [2022-12-13 20:58:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:04,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455783936] [2022-12-13 20:58:04,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455783936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:04,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:04,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:58:04,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114153109] [2022-12-13 20:58:04,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:04,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:58:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:58:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:58:04,233 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-12-13 20:58:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:04,681 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2022-12-13 20:58:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:58:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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 16 [2022-12-13 20:58:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:04,682 INFO L225 Difference]: With dead ends: 128 [2022-12-13 20:58:04,682 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 20:58:04,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:58:04,684 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 159 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:04,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 182 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:58:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 20:58:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2022-12-13 20:58:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 90 states have (on average 1.4777777777777779) internal successors, (133), 115 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) [2022-12-13 20:58:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2022-12-13 20:58:04,688 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 16 [2022-12-13 20:58:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:04,688 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2022-12-13 20:58:04,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-12-13 20:58:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2022-12-13 20:58:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 20:58:04,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:04,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:04,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:58:04,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1695296497, now seen corresponding path program 1 times [2022-12-13 20:58:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:04,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915211518] [2022-12-13 20:58:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:04,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:04,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915211518] [2022-12-13 20:58:04,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915211518] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:04,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423631566] [2022-12-13 20:58:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:04,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:04,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:04,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:04,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:58:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:04,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 20:58:04,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:04,965 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 13 treesize of output 9 [2022-12-13 20:58:04,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:58:05,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 20:58:05,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:05,101 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 19 treesize of output 15 [2022-12-13 20:58:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:05,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:58:05,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423631566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:05,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:58:05,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-12-13 20:58:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134600925] [2022-12-13 20:58:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:05,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:58:05,146 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:05,385 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2022-12-13 20:58:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:58:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 20:58:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:05,387 INFO L225 Difference]: With dead ends: 147 [2022-12-13 20:58:05,387 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 20:58:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:58:05,388 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:05,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 184 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 20:58:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2022-12-13 20:58:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 118 states have internal predecessors, (136), 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) [2022-12-13 20:58:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2022-12-13 20:58:05,392 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 20 [2022-12-13 20:58:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:05,392 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2022-12-13 20:58:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2022-12-13 20:58:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 20:58:05,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:05,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:05,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:58:05,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:05,594 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1116806667, now seen corresponding path program 1 times [2022-12-13 20:58:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:05,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269442807] [2022-12-13 20:58:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:05,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269442807] [2022-12-13 20:58:05,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269442807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:05,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:05,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:58:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621438620] [2022-12-13 20:58:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:05,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:58:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:58:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:58:05,787 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:05,942 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2022-12-13 20:58:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:58:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 20:58:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:05,943 INFO L225 Difference]: With dead ends: 185 [2022-12-13 20:58:05,943 INFO L226 Difference]: Without dead ends: 185 [2022-12-13 20:58:05,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:05,944 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 52 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:05,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 416 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-12-13 20:58:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 132. [2022-12-13 20:58:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 1.4433962264150944) internal successors, (153), 131 states have internal predecessors, (153), 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) [2022-12-13 20:58:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2022-12-13 20:58:05,948 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 20 [2022-12-13 20:58:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:05,948 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2022-12-13 20:58:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2022-12-13 20:58:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 20:58:05,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:05,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:05,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:58:05,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:05,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:05,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1012953034, now seen corresponding path program 1 times [2022-12-13 20:58:05,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:05,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353029103] [2022-12-13 20:58:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353029103] [2022-12-13 20:58:06,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353029103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:06,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:06,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:58:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971651784] [2022-12-13 20:58:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:06,116 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2022-12-13 20:58:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:06,353 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2022-12-13 20:58:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:58:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2022-12-13 20:58:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:06,354 INFO L225 Difference]: With dead ends: 161 [2022-12-13 20:58:06,354 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 20:58:06,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:58:06,355 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 315 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:06,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 117 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 20:58:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 133. [2022-12-13 20:58:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 132 states have internal predecessors, (155), 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) [2022-12-13 20:58:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2022-12-13 20:58:06,359 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 21 [2022-12-13 20:58:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2022-12-13 20:58:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2022-12-13 20:58:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2022-12-13 20:58:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 20:58:06,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:06,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:06,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:58:06,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1012953035, now seen corresponding path program 1 times [2022-12-13 20:58:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:06,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748914363] [2022-12-13 20:58:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748914363] [2022-12-13 20:58:06,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748914363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:06,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:06,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:58:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690785744] [2022-12-13 20:58:06,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:58:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:58:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:58:06,599 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-12-13 20:58:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:06,932 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2022-12-13 20:58:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 20:58:06,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2022-12-13 20:58:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:06,933 INFO L225 Difference]: With dead ends: 192 [2022-12-13 20:58:06,933 INFO L226 Difference]: Without dead ends: 192 [2022-12-13 20:58:06,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-13 20:58:06,934 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 362 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:06,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 190 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-13 20:58:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 135. [2022-12-13 20:58:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 134 states have internal predecessors, (157), 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) [2022-12-13 20:58:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2022-12-13 20:58:06,937 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 21 [2022-12-13 20:58:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:06,938 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2022-12-13 20:58:06,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-12-13 20:58:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2022-12-13 20:58:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 20:58:06,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:06,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:06,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:58:06,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1509706513, now seen corresponding path program 1 times [2022-12-13 20:58:06,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:06,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363426153] [2022-12-13 20:58:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:07,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363426153] [2022-12-13 20:58:07,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363426153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:07,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:07,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 20:58:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583507319] [2022-12-13 20:58:07,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:07,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:58:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:58:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:58:07,258 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 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) [2022-12-13 20:58:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:07,622 INFO L93 Difference]: Finished difference Result 202 states and 226 transitions. [2022-12-13 20:58:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:58:07,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 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 23 [2022-12-13 20:58:07,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:07,623 INFO L225 Difference]: With dead ends: 202 [2022-12-13 20:58:07,623 INFO L226 Difference]: Without dead ends: 202 [2022-12-13 20:58:07,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-12-13 20:58:07,623 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 255 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:07,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 384 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:58:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-13 20:58:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 147. [2022-12-13 20:58:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 146 states have internal predecessors, (170), 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) [2022-12-13 20:58:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2022-12-13 20:58:07,626 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 23 [2022-12-13 20:58:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:07,626 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2022-12-13 20:58:07,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 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) [2022-12-13 20:58:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2022-12-13 20:58:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 20:58:07,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:07,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:07,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:58:07,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:07,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 442909652, now seen corresponding path program 1 times [2022-12-13 20:58:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:07,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350669008] [2022-12-13 20:58:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:07,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350669008] [2022-12-13 20:58:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350669008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:07,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:07,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935077224] [2022-12-13 20:58:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:07,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:58:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:58:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:58:07,659 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-12-13 20:58:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:07,743 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-12-13 20:58:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:58:07,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 [2022-12-13 20:58:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:07,744 INFO L225 Difference]: With dead ends: 172 [2022-12-13 20:58:07,744 INFO L226 Difference]: Without dead ends: 172 [2022-12-13 20:58:07,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:07,744 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 159 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:07,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 102 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-13 20:58:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2022-12-13 20:58:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 146 states have internal predecessors, (169), 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) [2022-12-13 20:58:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2022-12-13 20:58:07,747 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 24 [2022-12-13 20:58:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:07,747 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2022-12-13 20:58:07,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-12-13 20:58:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2022-12-13 20:58:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:58:07,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:07,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:58:07,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1972392122, now seen corresponding path program 1 times [2022-12-13 20:58:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:07,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321174572] [2022-12-13 20:58:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321174572] [2022-12-13 20:58:07,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321174572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:07,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:07,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:58:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192212524] [2022-12-13 20:58:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:07,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:07,924 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:08,151 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2022-12-13 20:58:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:58:08,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 20:58:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:08,152 INFO L225 Difference]: With dead ends: 207 [2022-12-13 20:58:08,152 INFO L226 Difference]: Without dead ends: 207 [2022-12-13 20:58:08,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:58:08,152 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 194 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 284 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-13 20:58:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 151. [2022-12-13 20:58:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 126 states have (on average 1.373015873015873) internal successors, (173), 150 states have internal predecessors, (173), 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) [2022-12-13 20:58:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2022-12-13 20:58:08,155 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 25 [2022-12-13 20:58:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:08,155 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2022-12-13 20:58:08,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2022-12-13 20:58:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 20:58:08,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:08,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 20:58:08,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:08,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash 435867832, now seen corresponding path program 1 times [2022-12-13 20:58:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:08,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837604486] [2022-12-13 20:58:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:08,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837604486] [2022-12-13 20:58:08,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837604486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:08,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:08,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:58:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495004781] [2022-12-13 20:58:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:58:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:58:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:58:08,205 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:08,312 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2022-12-13 20:58:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:58:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 20:58:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:08,314 INFO L225 Difference]: With dead ends: 169 [2022-12-13 20:58:08,314 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 20:58:08,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:08,314 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 155 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:08,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 93 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 20:58:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-12-13 20:58:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 151 states have internal predecessors, (174), 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) [2022-12-13 20:58:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2022-12-13 20:58:08,322 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 26 [2022-12-13 20:58:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:08,322 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2022-12-13 20:58:08,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2022-12-13 20:58:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 20:58:08,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:08,323 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:58:08,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1248965482, now seen corresponding path program 1 times [2022-12-13 20:58:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:08,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802203615] [2022-12-13 20:58:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:08,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:08,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802203615] [2022-12-13 20:58:08,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802203615] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937717291] [2022-12-13 20:58:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:08,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:08,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:08,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:08,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:58:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:08,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 20:58:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:08,763 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:08,783 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 [2022-12-13 20:58:08,789 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 [2022-12-13 20:58:08,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:58:08,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:58:08,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:58:08,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:58:08,893 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:58:08,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:58:08,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 20:58:08,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 20:58:08,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 20:58:08,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 20:58:08,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,983 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 20:58:08,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-13 20:58:08,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:08,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-13 20:58:09,341 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 20:58:09,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 42 [2022-12-13 20:58:09,351 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 20:58:09,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2022-12-13 20:58:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:09,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:58:09,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:09,608 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-12-13 20:58:09,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:09,618 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-12-13 20:58:10,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:10,073 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-12-13 20:58:10,078 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 30 treesize of output 22 [2022-12-13 20:58:10,092 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-12-13 20:58:10,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 23 [2022-12-13 20:58:10,103 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 20:58:10,103 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-12-13 20:58:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:10,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937717291] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:10,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:58:10,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11, 13] total 29 [2022-12-13 20:58:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497573352] [2022-12-13 20:58:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 20:58:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 20:58:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:58:10,131 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:11,596 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2022-12-13 20:58:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 20:58:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 20:58:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:11,597 INFO L225 Difference]: With dead ends: 182 [2022-12-13 20:58:11,597 INFO L226 Difference]: Without dead ends: 182 [2022-12-13 20:58:11,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=1511, Unknown=15, NotChecked=0, Total=1722 [2022-12-13 20:58:11,598 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 117 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 20 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:11,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 424 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 790 Invalid, 15 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 20:58:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-13 20:58:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 155. [2022-12-13 20:58:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 130 states have (on average 1.3615384615384616) internal successors, (177), 154 states have internal predecessors, (177), 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) [2022-12-13 20:58:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2022-12-13 20:58:11,600 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 26 [2022-12-13 20:58:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:11,601 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2022-12-13 20:58:11,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2022-12-13 20:58:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 20:58:11,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:11,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:11,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:58:11,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:58:11,803 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1016244459, now seen corresponding path program 1 times [2022-12-13 20:58:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215197117] [2022-12-13 20:58:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:12,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215197117] [2022-12-13 20:58:12,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215197117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:12,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:12,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 20:58:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561350530] [2022-12-13 20:58:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:58:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:58:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:58:12,019 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:12,343 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2022-12-13 20:58:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:58:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 20:58:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:12,344 INFO L225 Difference]: With dead ends: 191 [2022-12-13 20:58:12,344 INFO L226 Difference]: Without dead ends: 191 [2022-12-13 20:58:12,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:58:12,344 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 87 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:12,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 328 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:58:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-12-13 20:58:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 160. [2022-12-13 20:58:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 135 states have (on average 1.348148148148148) internal successors, (182), 159 states have internal predecessors, (182), 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) [2022-12-13 20:58:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2022-12-13 20:58:12,347 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 26 [2022-12-13 20:58:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:12,347 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2022-12-13 20:58:12,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:12,348 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2022-12-13 20:58:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 20:58:12,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:12,348 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:12,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 20:58:12,348 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1528828450, now seen corresponding path program 1 times [2022-12-13 20:58:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:12,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738718910] [2022-12-13 20:58:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:12,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738718910] [2022-12-13 20:58:12,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738718910] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:12,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143524025] [2022-12-13 20:58:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:12,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:12,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:12,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:12,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:58:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:12,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 20:58:12,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:12,654 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:12,700 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:58:12,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:58:12,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:58:12,777 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:12,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-13 20:58:12,832 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:12,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-12-13 20:58:12,870 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:12,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 20:58:12,947 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 25 treesize of output 13 [2022-12-13 20:58:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:12,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:58:12,969 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2022-12-13 20:58:12,976 INFO L321 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2022-12-13 20:58:12,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-12-13 20:58:12,980 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) is different from false [2022-12-13 20:58:12,983 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem5#1.base|)) is different from false [2022-12-13 20:58:12,987 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-12-13 20:58:12,993 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_797 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_797))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse1)))) is different from false [2022-12-13 20:58:13,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:13,039 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2022-12-13 20:58:13,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:13,053 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 408 treesize of output 343 [2022-12-13 20:58:13,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:13,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 328 treesize of output 300 [2022-12-13 20:58:13,079 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 292 treesize of output 276 [2022-12-13 20:58:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:13,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143524025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:58:13,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:58:13,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 31 [2022-12-13 20:58:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867848474] [2022-12-13 20:58:13,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:58:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 20:58:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 20:58:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=613, Unknown=13, NotChecked=270, Total=992 [2022-12-13 20:58:13,336 INFO L87 Difference]: Start difference. First operand 160 states and 182 transitions. Second operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 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) [2022-12-13 20:58:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:14,251 INFO L93 Difference]: Finished difference Result 243 states and 272 transitions. [2022-12-13 20:58:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:58:14,251 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 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 27 [2022-12-13 20:58:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:14,252 INFO L225 Difference]: With dead ends: 243 [2022-12-13 20:58:14,252 INFO L226 Difference]: Without dead ends: 243 [2022-12-13 20:58:14,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1692, Unknown=13, NotChecked=460, Total=2550 [2022-12-13 20:58:14,252 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 454 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 92 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 843 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 586 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1380 Invalid, 4 Unknown, 843 Unchecked, 0.5s Time] [2022-12-13 20:58:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-13 20:58:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 179. [2022-12-13 20:58:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 178 states have internal predecessors, (206), 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) [2022-12-13 20:58:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2022-12-13 20:58:14,256 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 27 [2022-12-13 20:58:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:14,257 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2022-12-13 20:58:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 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) [2022-12-13 20:58:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2022-12-13 20:58:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 20:58:14,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:14,257 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:14,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:58:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:14,458 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1528828449, now seen corresponding path program 1 times [2022-12-13 20:58:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:14,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96892374] [2022-12-13 20:58:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:14,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96892374] [2022-12-13 20:58:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96892374] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317937647] [2022-12-13 20:58:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:14,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:14,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:58:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:14,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 20:58:14,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:14,889 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:14,941 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:58:14,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:58:14,946 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 6 treesize of output 5 [2022-12-13 20:58:14,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:58:14,982 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 [2022-12-13 20:58:15,073 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:15,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-12-13 20:58:15,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 20:58:15,186 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:15,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-12-13 20:58:15,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:15,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 20:58:15,209 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:15,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-12-13 20:58:15,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 20:58:15,290 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 25 treesize of output 13 [2022-12-13 20:58:15,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:58:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:15,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:58:15,462 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-12-13 20:58:15,622 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899) .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-12-13 20:58:15,633 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_898))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_899) .cse1 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_899) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_898) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-12-13 20:58:15,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:15,647 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2022-12-13 20:58:15,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:15,652 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2022-12-13 20:58:15,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:15,661 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 632 treesize of output 567 [2022-12-13 20:58:15,678 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:15,678 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 1872 treesize of output 1783 [2022-12-13 20:58:15,705 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 1768 treesize of output 1736 [2022-12-13 20:58:15,715 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 1736 treesize of output 1656 [2022-12-13 20:58:15,725 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 1656 treesize of output 1576 [2022-12-13 20:58:15,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:15,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1576 treesize of output 1436 [2022-12-13 20:58:41,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:41,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-12-13 20:58:41,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:41,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 20:58:41,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:58:41,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-12-13 20:58:41,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:58:41,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 20:58:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:42,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317937647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:58:42,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:58:42,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2022-12-13 20:58:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551804659] [2022-12-13 20:58:42,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:58:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 20:58:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 20:58:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=915, Unknown=28, NotChecked=192, Total=1260 [2022-12-13 20:58:42,094 INFO L87 Difference]: Start difference. First operand 179 states and 206 transitions. Second operand has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 36 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) [2022-12-13 20:58:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:44,013 INFO L93 Difference]: Finished difference Result 264 states and 293 transitions. [2022-12-13 20:58:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 20:58:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 36 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) Word has length 27 [2022-12-13 20:58:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:44,015 INFO L225 Difference]: With dead ends: 264 [2022-12-13 20:58:44,015 INFO L226 Difference]: Without dead ends: 264 [2022-12-13 20:58:44,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=478, Invalid=2367, Unknown=29, NotChecked=318, Total=3192 [2022-12-13 20:58:44,016 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 529 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:44,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 766 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1708 Invalid, 1 Unknown, 485 Unchecked, 1.0s Time] [2022-12-13 20:58:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-12-13 20:58:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 189. [2022-12-13 20:58:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 167 states have (on average 1.2934131736526946) internal successors, (216), 188 states have internal predecessors, (216), 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) [2022-12-13 20:58:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 216 transitions. [2022-12-13 20:58:44,019 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 216 transitions. Word has length 27 [2022-12-13 20:58:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:44,019 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 216 transitions. [2022-12-13 20:58:44,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 36 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) [2022-12-13 20:58:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 216 transitions. [2022-12-13 20:58:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:58:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:44,019 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:44,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:58:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:44,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1252677363, now seen corresponding path program 1 times [2022-12-13 20:58:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005025334] [2022-12-13 20:58:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005025334] [2022-12-13 20:58:44,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005025334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197861940] [2022-12-13 20:58:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:44,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:44,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:44,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:58:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:44,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 20:58:44,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:44,452 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 6 treesize of output 5 [2022-12-13 20:58:44,453 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 6 treesize of output 5 [2022-12-13 20:58:44,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:44,563 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 15 treesize of output 15 [2022-12-13 20:58:44,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:44,570 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 15 treesize of output 15 [2022-12-13 20:58:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:44,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:58:44,905 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 20:58:44,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 17 [2022-12-13 20:58:44,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:58:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:44,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197861940] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:58:44,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:58:44,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 27 [2022-12-13 20:58:44,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18947063] [2022-12-13 20:58:44,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:58:44,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:58:44,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:58:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:58:44,913 INFO L87 Difference]: Start difference. First operand 189 states and 216 transitions. Second operand has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 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) [2022-12-13 20:58:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:45,576 INFO L93 Difference]: Finished difference Result 227 states and 254 transitions. [2022-12-13 20:58:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 20:58:45,576 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 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 29 [2022-12-13 20:58:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:45,577 INFO L225 Difference]: With dead ends: 227 [2022-12-13 20:58:45,577 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 20:58:45,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 20:58:45,577 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 656 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 598 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:58:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 20:58:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 200. [2022-12-13 20:58:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 178 states have (on average 1.2808988764044944) internal successors, (228), 199 states have internal predecessors, (228), 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) [2022-12-13 20:58:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 228 transitions. [2022-12-13 20:58:45,580 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 228 transitions. Word has length 29 [2022-12-13 20:58:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:45,580 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 228 transitions. [2022-12-13 20:58:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 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) [2022-12-13 20:58:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 228 transitions. [2022-12-13 20:58:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 20:58:45,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:45,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:45,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:58:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 20:58:45,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 178291247, now seen corresponding path program 1 times [2022-12-13 20:58:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:45,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859876405] [2022-12-13 20:58:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859876405] [2022-12-13 20:58:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859876405] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774507649] [2022-12-13 20:58:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:45,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:45,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:45,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:58:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:45,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 20:58:45,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:46,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:58:46,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:46,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-12-13 20:58:46,059 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 16 treesize of output 8 [2022-12-13 20:58:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:58:46,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:58:46,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774507649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:58:46,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-12-13 20:58:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548135989] [2022-12-13 20:58:46,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:58:46,069 INFO L87 Difference]: Start difference. First operand 200 states and 228 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:46,289 INFO L93 Difference]: Finished difference Result 241 states and 267 transitions. [2022-12-13 20:58:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:58:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-13 20:58:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:46,290 INFO L225 Difference]: With dead ends: 241 [2022-12-13 20:58:46,291 INFO L226 Difference]: Without dead ends: 241 [2022-12-13 20:58:46,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:58:46,291 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 245 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:46,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 258 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-13 20:58:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 200. [2022-12-13 20:58:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 199 states have internal predecessors, (226), 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) [2022-12-13 20:58:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 226 transitions. [2022-12-13 20:58:46,296 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 226 transitions. Word has length 30 [2022-12-13 20:58:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:46,296 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 226 transitions. [2022-12-13 20:58:46,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 226 transitions. [2022-12-13 20:58:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 20:58:46,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:46,296 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:46,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:58:46,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:46,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1016870036, now seen corresponding path program 1 times [2022-12-13 20:58:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:46,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254744433] [2022-12-13 20:58:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:46,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:46,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254744433] [2022-12-13 20:58:46,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254744433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:46,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111759450] [2022-12-13 20:58:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:46,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:46,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:46,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:46,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:58:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:46,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 20:58:46,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:46,862 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:46,901 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 20:58:46,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 20:58:46,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:58:47,009 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:47,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 20:58:47,066 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:47,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-12-13 20:58:47,077 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:47,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 20:58:47,150 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 25 treesize of output 13 [2022-12-13 20:58:47,186 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 20:58:47,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 20:58:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:47,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:58:47,457 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1212 (Array Int Int)) (v_ArrVal_1213 Int) (v_ArrVal_1210 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc12#1.base_9| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc12#1.base_9|) 0)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc12#1.base_9| v_ArrVal_1213) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1210))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1212)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1))) is different from false [2022-12-13 20:58:47,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:47,468 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 34 [2022-12-13 20:58:47,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:47,476 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 156 treesize of output 143 [2022-12-13 20:58:47,480 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 128 treesize of output 124 [2022-12-13 20:58:47,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:58:47,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 122 [2022-12-13 20:58:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:48,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111759450] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:58:48,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:58:48,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 35 [2022-12-13 20:58:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288823353] [2022-12-13 20:58:48,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:58:48,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 20:58:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 20:58:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1010, Unknown=20, NotChecked=66, Total=1260 [2022-12-13 20:58:48,452 INFO L87 Difference]: Start difference. First operand 200 states and 226 transitions. Second operand has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 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) [2022-12-13 20:58:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:49,703 INFO L93 Difference]: Finished difference Result 367 states and 406 transitions. [2022-12-13 20:58:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:58:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 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) Word has length 32 [2022-12-13 20:58:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:49,704 INFO L225 Difference]: With dead ends: 367 [2022-12-13 20:58:49,704 INFO L226 Difference]: Without dead ends: 367 [2022-12-13 20:58:49,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=375, Invalid=1961, Unknown=20, NotChecked=94, Total=2450 [2022-12-13 20:58:49,705 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 483 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:49,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 754 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1746 Invalid, 0 Unknown, 176 Unchecked, 0.9s Time] [2022-12-13 20:58:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-12-13 20:58:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 207. [2022-12-13 20:58:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 186 states have (on average 1.2634408602150538) internal successors, (235), 206 states have internal predecessors, (235), 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) [2022-12-13 20:58:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2022-12-13 20:58:49,710 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 32 [2022-12-13 20:58:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:49,710 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2022-12-13 20:58:49,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 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) [2022-12-13 20:58:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2022-12-13 20:58:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 20:58:49,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:49,711 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:49,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:58:49,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 20:58:49,912 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:58:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1016870035, now seen corresponding path program 1 times [2022-12-13 20:58:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669531304] [2022-12-13 20:58:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:50,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:50,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669531304] [2022-12-13 20:58:50,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669531304] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:58:50,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409234689] [2022-12-13 20:58:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:50,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:58:50,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:50,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:58:50,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:58:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 20:58:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:58:50,417 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:50,463 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:58:50,476 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 20:58:50,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 20:58:50,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:58:50,518 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 [2022-12-13 20:58:50,606 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:50,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2022-12-13 20:58:50,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 20:58:50,702 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:50,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2022-12-13 20:58:50,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:50,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 20:58:50,727 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:58:50,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2022-12-13 20:58:50,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 20:58:50,839 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 15 treesize of output 7 [2022-12-13 20:58:50,841 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 18 [2022-12-13 20:58:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:58:50,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 20:58:50,886 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 20:58:50,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 20:58:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:50,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:59:01,120 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:59:09,863 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:09,863 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 77 [2022-12-13 20:59:09,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:09,868 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 53 [2022-12-13 20:59:09,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:09,877 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 358 treesize of output 325 [2022-12-13 20:59:09,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:09,893 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 670 treesize of output 645 [2022-12-13 20:59:09,903 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 630 treesize of output 606 [2022-12-13 20:59:09,910 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 606 treesize of output 582 [2022-12-13 20:59:09,917 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 582 treesize of output 574 [2022-12-13 20:59:09,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:09,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 574 treesize of output 530 [2022-12-13 20:59:11,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:11,090 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2022-12-13 20:59:11,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:11,094 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 20:59:11,097 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 54 treesize of output 46 [2022-12-13 20:59:11,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:11,104 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 112 treesize of output 111 [2022-12-13 20:59:11,109 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 68 treesize of output 60 [2022-12-13 20:59:11,113 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 88 treesize of output 82 [2022-12-13 20:59:11,117 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 56 treesize of output 54 [2022-12-13 20:59:17,379 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 46 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:59:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:59:17,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409234689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:59:17,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:59:17,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2022-12-13 20:59:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560402957] [2022-12-13 20:59:17,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:59:17,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 20:59:17,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:59:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 20:59:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1002, Unknown=18, NotChecked=0, Total=1190 [2022-12-13 20:59:17,511 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 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) [2022-12-13 20:59:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:59:19,060 INFO L93 Difference]: Finished difference Result 386 states and 425 transitions. [2022-12-13 20:59:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 20:59:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 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) Word has length 32 [2022-12-13 20:59:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:59:19,061 INFO L225 Difference]: With dead ends: 386 [2022-12-13 20:59:19,061 INFO L226 Difference]: Without dead ends: 386 [2022-12-13 20:59:19,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=305, Invalid=1569, Unknown=18, NotChecked=0, Total=1892 [2022-12-13 20:59:19,062 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 527 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:59:19,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 847 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 20:59:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-12-13 20:59:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 206. [2022-12-13 20:59:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 186 states have (on average 1.2526881720430108) internal successors, (233), 205 states have internal predecessors, (233), 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) [2022-12-13 20:59:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2022-12-13 20:59:19,065 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 32 [2022-12-13 20:59:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:59:19,065 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2022-12-13 20:59:19,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 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) [2022-12-13 20:59:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2022-12-13 20:59:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 20:59:19,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:59:19,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:59:19,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:59:19,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 20:59:19,267 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 20:59:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:59:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2019762047, now seen corresponding path program 2 times [2022-12-13 20:59:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:59:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544528355] [2022-12-13 20:59:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:59:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:59:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:59:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:59:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:59:19,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544528355] [2022-12-13 20:59:19,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544528355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:59:19,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101541163] [2022-12-13 20:59:19,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:59:19,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:59:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:59:19,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:59:19,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcafd551-0b87-4e09-8932-a873c2fb72a1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:59:19,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:59:19,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:59:19,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 20:59:19,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:59:19,673 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 20:59:19,714 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:59:19,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:59:19,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 20:59:19,739 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 [2022-12-13 20:59:19,794 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:59:19,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 20:59:19,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 treesize of output 9 [2022-12-13 20:59:19,851 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 20:59:19,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 20:59:19,855 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 5 treesize of output 3 [2022-12-13 20:59:19,863 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:59:19,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-12-13 20:59:19,893 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 20:59:19,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-12-13 20:59:19,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-13 20:59:20,089 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 20:59:20,089 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-12-13 20:59:20,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 20:59:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:59:20,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:59:20,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,162 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-12-13 20:59:20,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,166 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 20:59:20,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,174 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-12-13 20:59:20,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,178 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 20:59:20,503 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1457))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select v_arrayElimArr_18 .cse0) 0)) (not (= (select v_arrayElimArr_17 .cse0) 0)) (= (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1458))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (select (let ((.cse1 (store .cse2 .cse3 v_arrayElimArr_17))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store .cse4 .cse3 v_arrayElimArr_18) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) 0))))) (forall ((v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_arrayElimArr_15 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1457))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (or (= (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1458))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse5 (store .cse8 .cse7 v_arrayElimArr_16))) (select (select .cse5 (select (select (store .cse6 .cse7 v_arrayElimArr_15) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse5 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) 0) (not (= (select v_arrayElimArr_16 .cse9) 0)) (not (= (select v_arrayElimArr_15 .cse9) 0))))))) is different from false [2022-12-13 20:59:20,524 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1457))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select v_arrayElimArr_18 .cse0) 0)) (not (= (select v_arrayElimArr_17 .cse0) 0)) (= (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1458))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (select (let ((.cse1 (store .cse2 .cse3 v_arrayElimArr_17))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store .cse4 .cse3 v_arrayElimArr_18) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) 0))))) (forall ((v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_arrayElimArr_15 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1457))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (or (= (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1458))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse6 (store .cse9 .cse8 v_arrayElimArr_16))) (select (select .cse6 (select (select (store .cse7 .cse8 v_arrayElimArr_15) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) 0) (not (= (select v_arrayElimArr_15 .cse10) 0)) (not (= (select v_arrayElimArr_16 .cse10) 0)))))))) is different from false [2022-12-13 20:59:20,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,553 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 129 [2022-12-13 20:59:20,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,558 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 63 [2022-12-13 20:59:20,831 INFO L321 Elim1Store]: treesize reduction 154, result has 69.8 percent of original size [2022-12-13 20:59:20,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 2782 treesize of output 2351 [2022-12-13 20:59:20,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,902 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 3375 treesize of output 3234 [2022-12-13 20:59:20,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:20,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3157 treesize of output 3083 [2022-12-13 20:59:21,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:21,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2981 treesize of output 2673 [2022-12-13 20:59:21,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:21,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2178 treesize of output 2128 [2022-12-13 20:59:21,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:59:21,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 696 treesize of output 648