./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- 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-4e7fbc6 [2022-11-23 14:26:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:26:20,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:26:20,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:26:20,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:26:20,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:26:20,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:26:20,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:26:20,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:26:20,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:26:20,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:26:20,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:26:20,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:26:20,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:26:20,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:26:20,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:26:20,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:26:20,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:26:20,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:26:20,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:26:20,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:26:20,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:26:20,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:26:20,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:26:20,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:26:20,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:26:20,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:26:20,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:26:20,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:26:20,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:26:20,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:26:20,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:26:20,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:26:20,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:26:20,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:26:20,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:26:20,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:26:20,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:26:20,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:26:20,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:26:20,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:26:20,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:26:21,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:26:21,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:26:21,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:26:21,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:26:21,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:26:21,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:26:21,056 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:26:21,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:26:21,056 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:26:21,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:26:21,058 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:26:21,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:26:21,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:26:21,059 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:26:21,059 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:26:21,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:26:21,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:26:21,060 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:26:21,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:26:21,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:26:21,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:26:21,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:26:21,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:26:21,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:26:21,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:26:21,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:26:21,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:26:21,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:26:21,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:26:21,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:26:21,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:26:21,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:26:21,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:26:21,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:26:21,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:26:21,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:21,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:26:21,068 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:26:21,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:26:21,068 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:26:21,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:26:21,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:26:21,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2022-11-23 14:26:21,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:26:21,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:26:21,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:26:21,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:26:21,476 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:26:21,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2022-11-23 14:26:24,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:26:25,335 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:26:25,342 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2022-11-23 14:26:25,358 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/data/7d93e0536/edcc272ae12d40a1bac0fa04128fdd5f/FLAGb7ba8e104 [2022-11-23 14:26:25,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/data/7d93e0536/edcc272ae12d40a1bac0fa04128fdd5f [2022-11-23 14:26:25,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:26:25,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:26:25,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:25,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:26:25,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:26:25,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:25,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de5dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25, skipping insertion in model container [2022-11-23 14:26:25,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:25,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:26:25,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:26:25,857 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2022-11-23 14:26:25,866 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2022-11-23 14:26:25,869 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2022-11-23 14:26:25,871 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2022-11-23 14:26:25,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:25,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:26:25,942 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2022-11-23 14:26:25,959 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2022-11-23 14:26:25,961 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2022-11-23 14:26:25,962 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_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2022-11-23 14:26:25,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:25,992 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:26:25,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25 WrapperNode [2022-11-23 14:26:25,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:25,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:25,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:26:25,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:26:26,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,070 INFO L138 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 125 [2022-11-23 14:26:26,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:26,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:26:26,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:26:26,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:26:26,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:26:26,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:26:26,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:26:26,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:26:26,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2022-11-23 14:26:26,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:26,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:26:26,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:26:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:26:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:26:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:26:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:26:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:26:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:26:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:26:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:26:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:26:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:26:26,397 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:26:26,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:26:26,890 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:26:26,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:26:26,953 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-23 14:26:26,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:26 BoogieIcfgContainer [2022-11-23 14:26:26,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:26:26,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:26:26,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:26:26,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:26:26,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:25" (1/3) ... [2022-11-23 14:26:26,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef19ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:26, skipping insertion in model container [2022-11-23 14:26:26,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (2/3) ... [2022-11-23 14:26:26,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef19ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:26, skipping insertion in model container [2022-11-23 14:26:26,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:26" (3/3) ... [2022-11-23 14:26:26,966 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2022-11-23 14:26:26,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:26:26,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-23 14:26:27,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:26:27,045 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@188d57c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:26:27,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-11-23 14:26:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 105 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) [2022-11-23 14:26:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:26:27,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:27,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:26:27,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:27,065 INFO L85 PathProgramCache]: Analyzing trace with hash 7971, now seen corresponding path program 1 times [2022-11-23 14:26:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156764815] [2022-11-23 14:26:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:27,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156764815] [2022-11-23 14:26:27,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156764815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:27,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:27,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:26:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668383170] [2022-11-23 14:26:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:27,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:27,439 INFO L87 Difference]: Start difference. First operand has 106 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 105 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:27,670 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-11-23 14:26:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:27,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-23 14:26:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:27,700 INFO L225 Difference]: With dead ends: 106 [2022-11-23 14:26:27,704 INFO L226 Difference]: Without dead ends: 104 [2022-11-23 14:26:27,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:27,712 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 90 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:27,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 57 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-23 14:26:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-11-23 14:26:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 100 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2022-11-23 14:26:27,775 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 2 [2022-11-23 14:26:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:27,776 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2022-11-23 14:26:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2022-11-23 14:26:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:26:27,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:27,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:26:27,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:26:27,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash 7972, now seen corresponding path program 1 times [2022-11-23 14:26:27,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:27,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171046582] [2022-11-23 14:26:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:27,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:27,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171046582] [2022-11-23 14:26:27,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171046582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:27,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:27,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:26:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373671518] [2022-11-23 14:26:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:27,912 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:28,125 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2022-11-23 14:26:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:28,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-23 14:26:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:28,127 INFO L225 Difference]: With dead ends: 115 [2022-11-23 14:26:28,128 INFO L226 Difference]: Without dead ends: 115 [2022-11-23 14:26:28,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:28,130 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 85 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:28,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 63 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-23 14:26:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2022-11-23 14:26:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2022-11-23 14:26:28,140 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 2 [2022-11-23 14:26:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:28,140 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2022-11-23 14:26:28,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2022-11-23 14:26:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:26:28,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:28,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:26:28,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:26:28,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1222665810, now seen corresponding path program 1 times [2022-11-23 14:26:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:28,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497525373] [2022-11-23 14:26:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:28,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:28,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497525373] [2022-11-23 14:26:28,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497525373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:28,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:28,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:28,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034194422] [2022-11-23 14:26:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:28,381 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:28,561 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2022-11-23 14:26:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:26:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:28,567 INFO L225 Difference]: With dead ends: 105 [2022-11-23 14:26:28,567 INFO L226 Difference]: Without dead ends: 105 [2022-11-23 14:26:28,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:28,574 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 133 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:28,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 47 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-23 14:26:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2022-11-23 14:26:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.7333333333333334) internal successors, (104), 94 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2022-11-23 14:26:28,584 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 6 [2022-11-23 14:26:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:28,584 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2022-11-23 14:26:28,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2022-11-23 14:26:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:26:28,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:28,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:26:28,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:26:28,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1222665809, now seen corresponding path program 1 times [2022-11-23 14:26:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635237880] [2022-11-23 14:26:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:28,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:28,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635237880] [2022-11-23 14:26:28,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635237880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:28,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:28,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248889964] [2022-11-23 14:26:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:26:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:26:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:26:28,874 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:29,179 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-11-23 14:26:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:29,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:26:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:29,180 INFO L225 Difference]: With dead ends: 108 [2022-11-23 14:26:29,180 INFO L226 Difference]: Without dead ends: 108 [2022-11-23 14:26:29,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:26:29,182 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 168 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:29,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 106 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:29,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-23 14:26:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2022-11-23 14:26:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.703125) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2022-11-23 14:26:29,202 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 6 [2022-11-23 14:26:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:29,203 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2022-11-23 14:26:29,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2022-11-23 14:26:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:26:29,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:29,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:26:29,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:29,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1839177690, now seen corresponding path program 1 times [2022-11-23 14:26:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:29,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759852497] [2022-11-23 14:26:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:29,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:29,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759852497] [2022-11-23 14:26:29,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759852497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:29,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:29,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402714139] [2022-11-23 14:26:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:29,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:29,271 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:29,442 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2022-11-23 14:26:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-23 14:26:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:29,444 INFO L225 Difference]: With dead ends: 113 [2022-11-23 14:26:29,450 INFO L226 Difference]: Without dead ends: 113 [2022-11-23 14:26:29,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:29,452 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 101 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:29,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 96 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-23 14:26:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2022-11-23 14:26:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.6666666666666667) internal successors, (105), 96 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2022-11-23 14:26:29,475 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 8 [2022-11-23 14:26:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:29,476 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2022-11-23 14:26:29,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2022-11-23 14:26:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:26:29,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:29,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:26:29,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1839400788, now seen corresponding path program 1 times [2022-11-23 14:26:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657387654] [2022-11-23 14:26:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:29,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:29,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657387654] [2022-11-23 14:26:29,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657387654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:29,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:29,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358477286] [2022-11-23 14:26:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:29,679 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:29,869 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2022-11-23 14:26:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:29,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-23 14:26:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:29,870 INFO L225 Difference]: With dead ends: 97 [2022-11-23 14:26:29,871 INFO L226 Difference]: Without dead ends: 97 [2022-11-23 14:26:29,871 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 [2022-11-23 14:26:29,878 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:29,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 143 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-23 14:26:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2022-11-23 14:26:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2022-11-23 14:26:29,891 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 8 [2022-11-23 14:26:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:29,892 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2022-11-23 14:26:29,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2022-11-23 14:26:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:26:29,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:29,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:29,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:26:29,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1839400789, now seen corresponding path program 1 times [2022-11-23 14:26:29,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:29,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616307744] [2022-11-23 14:26:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:29,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:30,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616307744] [2022-11-23 14:26:30,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616307744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:30,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:30,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976874364] [2022-11-23 14:26:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:30,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:30,103 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:30,304 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2022-11-23 14:26:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:26:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-23 14:26:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:30,305 INFO L225 Difference]: With dead ends: 96 [2022-11-23 14:26:30,305 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 14:26:30,306 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 [2022-11-23 14:26:30,306 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:30,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 14:26:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-11-23 14:26:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2022-11-23 14:26:30,311 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 8 [2022-11-23 14:26:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:30,311 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2022-11-23 14:26:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2022-11-23 14:26:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:26:30,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:30,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:26:30,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1179937688, now seen corresponding path program 1 times [2022-11-23 14:26:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413095531] [2022-11-23 14:26:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:30,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:30,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413095531] [2022-11-23 14:26:30,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413095531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:30,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:30,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892220046] [2022-11-23 14:26:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:30,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:30,417 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:30,617 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2022-11-23 14:26:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:30,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:26:30,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:30,618 INFO L225 Difference]: With dead ends: 107 [2022-11-23 14:26:30,619 INFO L226 Difference]: Without dead ends: 107 [2022-11-23 14:26:30,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:30,620 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:30,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 64 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-23 14:26:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2022-11-23 14:26:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 92 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-11-23 14:26:30,624 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 9 [2022-11-23 14:26:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:30,625 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-11-23 14:26:30,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-11-23 14:26:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:26:30,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:30,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:30,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:26:30,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 48752919, now seen corresponding path program 1 times [2022-11-23 14:26:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732113609] [2022-11-23 14:26:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:30,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:30,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732113609] [2022-11-23 14:26:30,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732113609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:30,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:30,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:26:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340526821] [2022-11-23 14:26:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:30,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:26:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:30,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:26:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:26:30,787 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:31,035 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2022-11-23 14:26:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:26:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 14:26:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:31,036 INFO L225 Difference]: With dead ends: 143 [2022-11-23 14:26:31,036 INFO L226 Difference]: Without dead ends: 143 [2022-11-23 14:26:31,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:26:31,037 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 182 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:31,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-23 14:26:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2022-11-23 14:26:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 99 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2022-11-23 14:26:31,042 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 11 [2022-11-23 14:26:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:31,042 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2022-11-23 14:26:31,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2022-11-23 14:26:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:26:31,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:31,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:31,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:26:31,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2121669184, now seen corresponding path program 1 times [2022-11-23 14:26:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:31,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940724214] [2022-11-23 14:26:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:31,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:31,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940724214] [2022-11-23 14:26:31,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940724214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:31,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:31,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209637796] [2022-11-23 14:26:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:31,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:31,189 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:31,339 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2022-11-23 14:26:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-23 14:26:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:31,341 INFO L225 Difference]: With dead ends: 99 [2022-11-23 14:26:31,341 INFO L226 Difference]: Without dead ends: 99 [2022-11-23 14:26:31,341 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 [2022-11-23 14:26:31,342 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:31,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 139 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-23 14:26:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-23 14:26:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 98 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2022-11-23 14:26:31,346 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 13 [2022-11-23 14:26:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:31,347 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2022-11-23 14:26:31,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2022-11-23 14:26:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:26:31,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:31,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:26:31,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2121669185, now seen corresponding path program 1 times [2022-11-23 14:26:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:31,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192984314] [2022-11-23 14:26:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:31,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:31,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:31,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192984314] [2022-11-23 14:26:31,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192984314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:31,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:31,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618072710] [2022-11-23 14:26:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:31,635 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:31,790 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2022-11-23 14:26:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-23 14:26:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:31,792 INFO L225 Difference]: With dead ends: 96 [2022-11-23 14:26:31,792 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 14:26:31,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:31,793 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:31,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 175 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 14:26:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-11-23 14:26:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.434782608695652) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2022-11-23 14:26:31,796 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 13 [2022-11-23 14:26:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:31,796 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2022-11-23 14:26:31,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2022-11-23 14:26:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:26:31,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:31,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:31,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:26:31,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 379027347, now seen corresponding path program 1 times [2022-11-23 14:26:31,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:31,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150395303] [2022-11-23 14:26:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:31,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:31,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150395303] [2022-11-23 14:26:31,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150395303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:31,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:31,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:26:31,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219402815] [2022-11-23 14:26:31,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:31,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:31,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:31,946 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:32,089 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2022-11-23 14:26:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 14:26:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:32,091 INFO L225 Difference]: With dead ends: 90 [2022-11-23 14:26:32,091 INFO L226 Difference]: Without dead ends: 90 [2022-11-23 14:26:32,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:26:32,092 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:32,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 168 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-23 14:26:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-23 14:26:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 89 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2022-11-23 14:26:32,095 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 17 [2022-11-23 14:26:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2022-11-23 14:26:32,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2022-11-23 14:26:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:26:32,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:32,096 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:26:32,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash 380338601, now seen corresponding path program 1 times [2022-11-23 14:26:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908438652] [2022-11-23 14:26:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:32,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:32,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908438652] [2022-11-23 14:26:32,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908438652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:26:32,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704537079] [2022-11-23 14:26:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:32,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:26:32,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:26:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:32,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 14:26:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:32,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:26:32,553 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:26:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:32,594 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 [2022-11-23 14:26:32,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:32,604 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 [2022-11-23 14:26:32,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:32,752 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 14:26:32,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:32,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:26:32,764 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 10 [2022-11-23 14:26:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:32,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:26:33,170 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 10 treesize of output 8 [2022-11-23 14:26:33,178 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 14 treesize of output 12 [2022-11-23 14:26:33,189 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 10 treesize of output 8 [2022-11-23 14:26:33,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:33,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704537079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:26:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [380508969] [2022-11-23 14:26:33,232 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 14:26:33,232 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:26:33,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:26:33,242 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:26:33,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:26:33,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:26:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:26:33,340 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 [2022-11-23 14:26:33,348 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 [2022-11-23 14:26:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:26:33,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:33,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:33,688 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:26:34,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [380508969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:34,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:26:34,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5] total 18 [2022-11-23 14:26:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468264225] [2022-11-23 14:26:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:26:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:26:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:26:34,746 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-11-23 14:26:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:34,986 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2022-11-23 14:26:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:26:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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 17 [2022-11-23 14:26:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:34,987 INFO L225 Difference]: With dead ends: 83 [2022-11-23 14:26:34,987 INFO L226 Difference]: Without dead ends: 83 [2022-11-23 14:26:34,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:26:34,988 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 78 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:26:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-23 14:26:34,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2022-11-23 14:26:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 72 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-11-23 14:26:34,991 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 17 [2022-11-23 14:26:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:34,991 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-11-23 14:26:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-11-23 14:26:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-11-23 14:26:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:26:34,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:34,993 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:35,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:35,194 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2117589579, now seen corresponding path program 1 times [2022-11-23 14:26:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:35,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123843163] [2022-11-23 14:26:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:35,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123843163] [2022-11-23 14:26:35,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123843163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:26:35,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121142017] [2022-11-23 14:26:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:35,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:35,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:35,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:26:35,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:26:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:35,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 14:26:35,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:35,813 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 [2022-11-23 14:26:35,833 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 [2022-11-23 14:26:35,877 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:26:35,878 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 [2022-11-23 14:26:35,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:35,909 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 [2022-11-23 14:26:35,921 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 [2022-11-23 14:26:35,958 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 [2022-11-23 14:26:35,983 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 16 treesize of output 18 [2022-11-23 14:26:36,013 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 16 treesize of output 18 [2022-11-23 14:26:36,050 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 [2022-11-23 14:26:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:36,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:26:36,182 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_333 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_333) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-23 14:26:36,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:36,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:26:36,350 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 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-23 14:26:36,356 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 36 treesize of output 24 [2022-11-23 14:26:36,363 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 7 treesize of output 3 [2022-11-23 14:26:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:36,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121142017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:26:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196268313] [2022-11-23 14:26:36,385 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-23 14:26:36,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:26:36,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:26:36,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:26:36,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:26:36,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:26:36,469 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 [2022-11-23 14:26:36,477 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 [2022-11-23 14:26:36,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:26:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:26:36,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:36,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:26:36,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-23 14:26:36,652 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 11 [2022-11-23 14:26:36,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:26:36,726 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 14:26:36,726 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 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-23 14:26:36,753 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:26:36,754 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 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-23 14:26:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:26:36,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:26:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:26:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:36,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:26:37,142 INFO L321 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2022-11-23 14:26:37,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 295 treesize of output 294 [2022-11-23 14:26:37,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:37,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:37,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:37,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:37,260 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-23 14:26:37,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 325 treesize of output 308 [2022-11-23 14:26:37,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:37,314 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2022-11-23 14:26:37,316 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 321 treesize of output 324 [2022-11-23 14:26:37,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:37,366 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-23 14:26:37,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 325 treesize of output 319 [2022-11-23 14:26:37,903 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-23 14:26:37,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 513 treesize of output 386 [2022-11-23 14:26:37,963 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-23 14:26:37,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 464 treesize of output 441 [2022-11-23 14:26:37,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:37,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,073 INFO L321 Elim1Store]: treesize reduction 212, result has 16.2 percent of original size [2022-11-23 14:26:38,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 421 treesize of output 404 [2022-11-23 14:26:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,607 INFO L321 Elim1Store]: treesize reduction 91, result has 10.8 percent of original size [2022-11-23 14:26:38,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 924 treesize of output 713 [2022-11-23 14:26:38,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,666 INFO L321 Elim1Store]: treesize reduction 91, result has 10.8 percent of original size [2022-11-23 14:26:38,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 924 treesize of output 853 [2022-11-23 14:26:38,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:38,757 INFO L321 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-11-23 14:26:38,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 911 treesize of output 871 [2022-11-23 14:26:39,110 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 [2022-11-23 14:26:39,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-23 14:26:39,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:26:39,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:26:39,152 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 [2022-11-23 14:26:39,291 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2022-11-23 14:26:39,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 166 treesize of output 160 [2022-11-23 14:26:39,371 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2022-11-23 14:26:39,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 126 treesize of output 144 [2022-11-23 14:26:41,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:26:41,540 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 19 treesize of output 1 [2022-11-23 14:26:41,545 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 19 treesize of output 1 [2022-11-23 14:26:41,549 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 [2022-11-23 14:26:41,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-23 14:26:41,594 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 [2022-11-23 14:26:41,611 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 [2022-11-23 14:26:41,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:26:41,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:26:41,752 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2022-11-23 14:26:41,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 166 treesize of output 160 [2022-11-23 14:26:41,870 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2022-11-23 14:26:41,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 126 treesize of output 144 [2022-11-23 14:26:42,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:26:42,956 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:26:43,943 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3013#(and (<= (+ 8 |ULTIMATE.start_main_~end~0#1.offset|) (select |#length| |ULTIMATE.start_main_~end~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1) (= |ULTIMATE.start_main_~end~0#1.base| |ULTIMATE.start_main_~list~0#1.base|) (= |ULTIMATE.start_main_~list~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|) (= |ULTIMATE.start_main_~list~0#1.offset| 0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~end~0#1.base| 0)) (<= 0 |#StackHeapBarrier|) (not (= ~unnamed1~0~BLACK (select (select |#memory_int| |ULTIMATE.start_main_~end~0#1.base|) (+ 4 |ULTIMATE.start_main_~end~0#1.offset|)))) (= |#NULL.base| 0))' at error location [2022-11-23 14:26:43,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:26:43,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:26:43,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-11-23 14:26:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631807058] [2022-11-23 14:26:43,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:26:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:26:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:26:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=692, Unknown=7, NotChecked=54, Total=870 [2022-11-23 14:26:43,945 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:45,033 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-11-23 14:26:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:26:45,034 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 14:26:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:45,037 INFO L225 Difference]: With dead ends: 116 [2022-11-23 14:26:45,037 INFO L226 Difference]: Without dead ends: 116 [2022-11-23 14:26:45,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1352, Unknown=7, NotChecked=78, Total=1722 [2022-11-23 14:26:45,040 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 263 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 44 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:45,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 193 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 501 Invalid, 2 Unknown, 108 Unchecked, 0.5s Time] [2022-11-23 14:26:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-23 14:26:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 78. [2022-11-23 14:26:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.328125) internal successors, (85), 77 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2022-11-23 14:26:45,044 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 18 [2022-11-23 14:26:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:45,046 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2022-11-23 14:26:45,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2022-11-23 14:26:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 14:26:45,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:45,048 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] [2022-11-23 14:26:45,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 14:26:45,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-23 14:26:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1947146989, now seen corresponding path program 1 times [2022-11-23 14:26:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517247811] [2022-11-23 14:26:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:45,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517247811] [2022-11-23 14:26:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517247811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:26:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799713257] [2022-11-23 14:26:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:45,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:26:46,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e6dfea4-fd71-4e11-84b3-57f95c9f8096/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:26:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:46,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 14:26:46,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:46,115 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 [2022-11-23 14:26:46,146 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 [2022-11-23 14:26:46,175 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:26:46,176 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 [2022-11-23 14:26:46,202 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 [2022-11-23 14:26:46,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,212 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 [2022-11-23 14:26:46,246 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 [2022-11-23 14:26:46,260 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 16 treesize of output 18 [2022-11-23 14:26:46,283 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 16 treesize of output 18 [2022-11-23 14:26:46,292 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:26:46,293 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:26:46,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:26:46,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-11-23 14:26:46,359 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 16 treesize of output 8 [2022-11-23 14:26:46,383 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 16 treesize of output 18 [2022-11-23 14:26:46,394 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 16 treesize of output 18 [2022-11-23 14:26:46,420 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 [2022-11-23 14:26:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:46,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:26:46,461 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_455 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-23 14:26:46,632 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:26:46,632 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 13 treesize of output 12 [2022-11-23 14:26:46,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:46,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:26:46,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-23 14:26:46,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:46,819 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 36 treesize of output 24 [2022-11-23 14:26:46,822 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 7 treesize of output 3 [2022-11-23 14:26:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:46,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799713257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:26:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512089555] [2022-11-23 14:26:46,856 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 14:26:46,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:26:46,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:26:46,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:26:46,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:26:46,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:26:46,905 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 [2022-11-23 14:26:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:26:46,924 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 [2022-11-23 14:26:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:26:46,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:46,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2022-11-23 14:26:46,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:46,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:26:47,011 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 11 [2022-11-23 14:26:47,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-23 14:26:47,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:26:47,067 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 14:26:47,068 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 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-23 14:26:47,087 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:26:47,087 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 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-23 14:26:47,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:26:47,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:26:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:26:47,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:26:47,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-23 14:26:47,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:26:47,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-23 14:26:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-23 14:26:47,322 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-23 14:26:47,323 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 3 case distinctions, treesize of input 199 treesize of output 120 [2022-11-23 14:26:47,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-23 14:26:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-11-23 14:26:47,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,408 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 14:26:47,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 116 [2022-11-23 14:26:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-11-23 14:26:47,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:47,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-23 14:26:47,754 INFO L321 Elim1Store]: treesize reduction 170, result has 15.0 percent of original size [2022-11-23 14:26:47,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 383 treesize of output 387 [2022-11-23 14:26:47,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:47,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:47,938 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-23 14:26:47,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 384 [2022-11-23 14:26:47,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:47,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,023 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-23 14:26:48,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 379 treesize of output 376 [2022-11-23 14:26:48,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:48,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:48,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,085 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-23 14:26:48,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 376 treesize of output 362 [2022-11-23 14:26:48,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,561 INFO L321 Elim1Store]: treesize reduction 80, result has 32.2 percent of original size [2022-11-23 14:26:48,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 630 treesize of output 429 [2022-11-23 14:26:48,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:48,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:48,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,724 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-23 14:26:48,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 466 treesize of output 452 [2022-11-23 14:26:48,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:48,838 INFO L321 Elim1Store]: treesize reduction 92, result has 35.2 percent of original size [2022-11-23 14:26:48,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 462 treesize of output 479 [2022-11-23 14:26:55,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:55,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:26:55,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:26:56,113 INFO L321 Elim1Store]: treesize reduction 776, result has 0.1 percent of original size [2022-11-23 14:26:56,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 2 disjoint index pairs (out of 91 index pairs), introduced 16 new quantified variables, introduced 91 case distinctions, treesize of input 11585 treesize of output 8066 [2022-11-23 14:26:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:34,580 WARN L233 SmtUtils]: Spent 38.06s on a formula simplification. DAG size of input: 946 DAG size of output: 491 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 14:27:34,584 INFO L321 Elim1Store]: treesize reduction 1546, result has 49.6 percent of original size [2022-11-23 14:27:34,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 20 select indices, 20 select index equivalence classes, 3 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 208 case distinctions, treesize of input 11572 treesize of output 12237 [2022-11-23 14:27:35,299 INFO L217 Elim1Store]: Index analysis took 147 ms [2022-11-23 14:27:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:35,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:35,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:35,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:27:44,266 WARN L233 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 284 DAG size of output: 96 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 14:27:44,267 INFO L321 Elim1Store]: treesize reduction 625, result has 24.1 percent of original size [2022-11-23 14:27:44,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 11274 treesize of output 10517 [2022-11-23 14:27:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:44,776 INFO L217 Elim1Store]: Index analysis took 116 ms [2022-11-23 14:27:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:44,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:27:45,565 INFO L321 Elim1Store]: treesize reduction 700, result has 0.1 percent of original size [2022-11-23 14:27:45,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 2 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 10911 treesize of output 10364 [2022-11-23 14:30:43,418 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 676 DAG size of output: 676 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)