./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:28:05,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:28:05,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:28:05,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:28:05,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:28:05,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:28:05,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:28:05,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:28:05,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:28:05,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:28:05,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:28:05,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:28:05,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:28:05,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:28:05,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:28:05,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:28:05,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:28:05,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:28:05,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:28:05,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:28:05,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:28:05,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:28:05,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:28:05,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:28:05,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:28:05,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:28:05,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:28:05,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:28:05,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:28:05,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:28:05,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:28:05,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:28:05,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:28:05,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:28:05,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:28:05,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:28:05,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:28:05,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:28:05,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:28:05,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:28:05,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:28:05,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-11-16 16:28:05,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:28:05,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:28:05,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:28:05,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:28:05,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:28:05,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:28:05,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:28:05,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:28:05,981 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:28:05,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:28:05,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:28:05,983 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:28:05,983 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:28:05,983 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:28:05,984 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:28:05,984 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:28:05,984 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:28:05,984 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:28:05,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:28:05,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:28:05,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:28:05,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:28:05,986 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:28:05,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:28:05,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:28:05,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:28:05,987 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:28:05,988 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:28:05,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:28:05,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:28:05,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:28:05,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:28:05,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:28:05,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:28:05,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:05,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:28:05,990 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:28:05,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:28:05,991 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:28:05,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:28:05,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:28:05,992 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2022-11-16 16:28:06,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:28:06,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:28:06,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:28:06,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:28:06,334 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:28:06,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-11-16 16:28:06,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/data/9d37e3526/d4aa906851a74343ad01b5c5737cc7b6/FLAG277c8628a [2022-11-16 16:28:07,023 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:28:07,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-11-16 16:28:07,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/data/9d37e3526/d4aa906851a74343ad01b5c5737cc7b6/FLAG277c8628a [2022-11-16 16:28:07,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/data/9d37e3526/d4aa906851a74343ad01b5c5737cc7b6 [2022-11-16 16:28:07,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:28:07,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:28:07,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:07,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:28:07,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:28:07,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1163e0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07, skipping insertion in model container [2022-11-16 16:28:07,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:28:07,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:07,685 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-11-16 16:28:07,688 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-11-16 16:28:07,689 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-11-16 16:28:07,690 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-11-16 16:28:07,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:07,703 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:28:07,757 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-11-16 16:28:07,758 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-11-16 16:28:07,759 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-11-16 16:28:07,760 WARN L229 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_91f6006a-7436-485a-a3e4-d82c1f169dd7/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-11-16 16:28:07,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:07,797 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:28:07,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07 WrapperNode [2022-11-16 16:28:07,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:07,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:07,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:28:07,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:28:07,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,859 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-11-16 16:28:07,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:07,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:28:07,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:28:07,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:28:07,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:28:07,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:28:07,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:28:07,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:28:07,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (1/1) ... [2022-11-16 16:28:07,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:07,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:28:07,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:28:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:28:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:28:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:28:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:28:08,122 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:28:08,124 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:28:08,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:28:08,642 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:28:08,647 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-16 16:28:08,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:08 BoogieIcfgContainer [2022-11-16 16:28:08,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:28:08,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:28:08,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:28:08,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:28:08,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:28:07" (1/3) ... [2022-11-16 16:28:08,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd2439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:08, skipping insertion in model container [2022-11-16 16:28:08,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:07" (2/3) ... [2022-11-16 16:28:08,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd2439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:08, skipping insertion in model container [2022-11-16 16:28:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:08" (3/3) ... [2022-11-16 16:28:08,668 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2022-11-16 16:28:08,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:28:08,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-16 16:28:08,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:28:08,770 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;@36c7b88a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:28:08,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-16 16:28:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 16:28:08,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:08,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 16:28:08,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 8374, now seen corresponding path program 1 times [2022-11-16 16:28:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:08,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738592577] [2022-11-16 16:28:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:09,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738592577] [2022-11-16 16:28:09,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738592577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:09,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:09,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:28:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98531317] [2022-11-16 16:28:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:09,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:09,078 INFO L87 Difference]: Start difference. First operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-16 16:28:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:09,235 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2022-11-16 16:28:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:09,238 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 [2022-11-16 16:28:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:09,247 INFO L225 Difference]: With dead ends: 144 [2022-11-16 16:28:09,247 INFO L226 Difference]: Without dead ends: 143 [2022-11-16 16:28:09,249 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 [2022-11-16 16:28:09,252 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:09,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 80 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-16 16:28:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2022-11-16 16:28:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 118 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2022-11-16 16:28:09,293 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 2 [2022-11-16 16:28:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:09,294 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2022-11-16 16:28:09,294 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) [2022-11-16 16:28:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2022-11-16 16:28:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 16:28:09,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:09,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 16:28:09,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:28:09,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 8375, now seen corresponding path program 1 times [2022-11-16 16:28:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:09,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420605276] [2022-11-16 16:28:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:09,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:09,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420605276] [2022-11-16 16:28:09,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420605276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:09,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:09,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:28:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242483545] [2022-11-16 16:28:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:09,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:09,432 INFO L87 Difference]: Start difference. First operand 119 states and 127 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) [2022-11-16 16:28:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:09,596 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-11-16 16:28:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:09,599 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 [2022-11-16 16:28:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:09,603 INFO L225 Difference]: With dead ends: 116 [2022-11-16 16:28:09,604 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 16:28:09,605 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 [2022-11-16 16:28:09,607 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:09,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 16:28:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-16 16:28:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 2.05) internal successors, (123), 115 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2022-11-16 16:28:09,624 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 2 [2022-11-16 16:28:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:09,624 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2022-11-16 16:28:09,625 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) [2022-11-16 16:28:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2022-11-16 16:28:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:28:09,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:09,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:28:09,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:28:09,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 8054028, now seen corresponding path program 1 times [2022-11-16 16:28:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:09,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946895597] [2022-11-16 16:28:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:09,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:09,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946895597] [2022-11-16 16:28:09,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946895597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:09,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:09,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831096679] [2022-11-16 16:28:09,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:09,737 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:09,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:09,841 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-16 16:28:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:09,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 16:28:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:09,843 INFO L225 Difference]: With dead ends: 113 [2022-11-16 16:28:09,843 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 16:28:09,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:09,844 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 91 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:09,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 66 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 16:28:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-11-16 16:28:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 110 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2022-11-16 16:28:09,852 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 4 [2022-11-16 16:28:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:09,853 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2022-11-16 16:28:09,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2022-11-16 16:28:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:28:09,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:09,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:28:09,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:28:09,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash 8054029, now seen corresponding path program 1 times [2022-11-16 16:28:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:09,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831367691] [2022-11-16 16:28:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:09,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:09,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831367691] [2022-11-16 16:28:09,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831367691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:09,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:09,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271485248] [2022-11-16 16:28:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:09,965 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:10,085 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2022-11-16 16:28:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:10,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 16:28:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:10,087 INFO L225 Difference]: With dead ends: 126 [2022-11-16 16:28:10,087 INFO L226 Difference]: Without dead ends: 126 [2022-11-16 16:28:10,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:10,088 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:10,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 74 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-16 16:28:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-11-16 16:28:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 113 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-11-16 16:28:10,096 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 4 [2022-11-16 16:28:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:10,096 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-11-16 16:28:10,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-11-16 16:28:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:28:10,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:10,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:28:10,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -812908213, now seen corresponding path program 1 times [2022-11-16 16:28:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:10,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944218343] [2022-11-16 16:28:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:10,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:10,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944218343] [2022-11-16 16:28:10,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944218343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:10,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:10,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:28:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34193445] [2022-11-16 16:28:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:10,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:28:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:28:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:28:10,321 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-16 16:28:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:10,501 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-11-16 16:28:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2022-11-16 16:28:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:10,504 INFO L225 Difference]: With dead ends: 116 [2022-11-16 16:28:10,504 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 16:28:10,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:10,515 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:10,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 16:28:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2022-11-16 16:28:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 104 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2022-11-16 16:28:10,531 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2022-11-16 16:28:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:10,531 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2022-11-16 16:28:10,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-16 16:28:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2022-11-16 16:28:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:28:10,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:10,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:28:10,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash -812908212, now seen corresponding path program 1 times [2022-11-16 16:28:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:10,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763523102] [2022-11-16 16:28:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:10,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:10,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763523102] [2022-11-16 16:28:10,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763523102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:10,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:10,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:28:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580417760] [2022-11-16 16:28:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:10,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:28:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:28:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:28:10,767 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-16 16:28:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:10,980 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-11-16 16:28:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:28:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2022-11-16 16:28:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:10,982 INFO L225 Difference]: With dead ends: 135 [2022-11-16 16:28:10,982 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 16:28:10,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:10,983 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 127 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:10,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 82 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 16:28:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2022-11-16 16:28:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-11-16 16:28:10,989 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 8 [2022-11-16 16:28:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:10,989 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-11-16 16:28:10,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-16 16:28:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-11-16 16:28:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 16:28:10,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:10,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:10,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:28:10,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash 479237399, now seen corresponding path program 1 times [2022-11-16 16:28:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:10,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421507023] [2022-11-16 16:28:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:11,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:11,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421507023] [2022-11-16 16:28:11,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421507023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:11,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:11,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:28:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923252572] [2022-11-16 16:28:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:11,060 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:11,239 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2022-11-16 16:28:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 16:28:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:11,242 INFO L225 Difference]: With dead ends: 144 [2022-11-16 16:28:11,242 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 16:28:11,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:28:11,246 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 105 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 16:28:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2022-11-16 16:28:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-11-16 16:28:11,264 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 10 [2022-11-16 16:28:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:11,265 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-11-16 16:28:11,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-11-16 16:28:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 16:28:11,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:11,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:28:11,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 479463659, now seen corresponding path program 1 times [2022-11-16 16:28:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:11,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664960130] [2022-11-16 16:28:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:11,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:11,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664960130] [2022-11-16 16:28:11,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664960130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:11,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:11,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499987203] [2022-11-16 16:28:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:11,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:11,454 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:11,614 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2022-11-16 16:28:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:11,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 16:28:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:11,616 INFO L225 Difference]: With dead ends: 111 [2022-11-16 16:28:11,616 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 16:28:11,616 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 [2022-11-16 16:28:11,617 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:11,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 16:28:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-16 16:28:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-11-16 16:28:11,622 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 10 [2022-11-16 16:28:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:11,623 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-11-16 16:28:11,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-11-16 16:28:11,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 16:28:11,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:11,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:11,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:28:11,624 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 479463660, now seen corresponding path program 1 times [2022-11-16 16:28:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:11,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688004136] [2022-11-16 16:28:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:11,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:11,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:11,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688004136] [2022-11-16 16:28:11,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688004136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:11,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:11,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098992456] [2022-11-16 16:28:11,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:11,900 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:12,071 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2022-11-16 16:28:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:28:12,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 16:28:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:12,072 INFO L225 Difference]: With dead ends: 111 [2022-11-16 16:28:12,072 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 16:28:12,072 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 [2022-11-16 16:28:12,073 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:12,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 199 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 16:28:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2022-11-16 16:28:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-16 16:28:12,079 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 10 [2022-11-16 16:28:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:12,079 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-16 16:28:12,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-16 16:28:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 16:28:12,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:12,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:12,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:28:12,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash 494053857, now seen corresponding path program 1 times [2022-11-16 16:28:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:12,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569244644] [2022-11-16 16:28:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:12,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:12,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569244644] [2022-11-16 16:28:12,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569244644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:12,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:12,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:28:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012081597] [2022-11-16 16:28:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:12,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:28:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:28:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:28:12,382 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2022-11-16 16:28:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:12,634 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2022-11-16 16:28:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:28:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 [2022-11-16 16:28:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:12,635 INFO L225 Difference]: With dead ends: 158 [2022-11-16 16:28:12,635 INFO L226 Difference]: Without dead ends: 158 [2022-11-16 16:28:12,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:28:12,636 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 225 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:12,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 156 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-16 16:28:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 113. [2022-11-16 16:28:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2022-11-16 16:28:12,641 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 13 [2022-11-16 16:28:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:12,641 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2022-11-16 16:28:12,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2022-11-16 16:28:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2022-11-16 16:28:12,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:28:12,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:12,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:12,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:28:12,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:12,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:12,643 INFO L85 PathProgramCache]: Analyzing trace with hash 947851196, now seen corresponding path program 1 times [2022-11-16 16:28:12,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:12,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612282662] [2022-11-16 16:28:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:12,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:12,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612282662] [2022-11-16 16:28:12,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612282662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:12,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537289766] [2022-11-16 16:28:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:12,847 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:13,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:13,005 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2022-11-16 16:28:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:13,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 16:28:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:13,007 INFO L225 Difference]: With dead ends: 112 [2022-11-16 16:28:13,007 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 16:28:13,007 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 [2022-11-16 16:28:13,008 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:13,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 16:28:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-11-16 16:28:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 111 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) [2022-11-16 16:28:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2022-11-16 16:28:13,011 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 15 [2022-11-16 16:28:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:13,011 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2022-11-16 16:28:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2022-11-16 16:28:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:28:13,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:13,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:28:13,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 947851197, now seen corresponding path program 1 times [2022-11-16 16:28:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:13,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523289806] [2022-11-16 16:28:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:13,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:13,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523289806] [2022-11-16 16:28:13,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523289806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:13,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:13,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871377885] [2022-11-16 16:28:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:13,268 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:13,414 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-11-16 16:28:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 16:28:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:13,416 INFO L225 Difference]: With dead ends: 109 [2022-11-16 16:28:13,416 INFO L226 Difference]: Without dead ends: 109 [2022-11-16 16:28:13,416 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 [2022-11-16 16:28:13,417 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:13,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 196 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-16 16:28:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2022-11-16 16:28:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.4375) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-16 16:28:13,421 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 15 [2022-11-16 16:28:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:13,421 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-16 16:28:13,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-16 16:28:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:28:13,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:13,422 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 16:28:13,423 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 405330386, now seen corresponding path program 1 times [2022-11-16 16:28:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:13,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452853340] [2022-11-16 16:28:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:13,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:13,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452853340] [2022-11-16 16:28:13,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452853340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:13,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536633511] [2022-11-16 16:28:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:13,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:13,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:13,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:13,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:28:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:13,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 16:28:13,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:13,923 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 [2022-11-16 16:28:13,930 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 [2022-11-16 16:28:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:13,992 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 [2022-11-16 16:28:14,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,009 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 [2022-11-16 16:28:14,226 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 [2022-11-16 16:28:14,232 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 [2022-11-16 16:28:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:14,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:14,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536633511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:14,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1623200743] [2022-11-16 16:28:14,365 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-16 16:28:14,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:14,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:14,375 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:14,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,443 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 [2022-11-16 16:28:14,467 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 19 treesize of output 1 [2022-11-16 16:28:14,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,480 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 [2022-11-16 16:28:14,490 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 19 treesize of output 1 [2022-11-16 16:28:14,517 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 [2022-11-16 16:28:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,538 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 [2022-11-16 16:28:14,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,555 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 [2022-11-16 16:28:14,570 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 [2022-11-16 16:28:14,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,626 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 [2022-11-16 16:28:14,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:14,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,687 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 [2022-11-16 16:28:14,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,715 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 [2022-11-16 16:28:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:14,735 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 [2022-11-16 16:28:14,990 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:16,659 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3147#(and (= |ULTIMATE.start_main_~null~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1)) (or (not (= |ULTIMATE.start_main_~null~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|))) (= |ULTIMATE.start_main_~list~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:28:16,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:16,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:16,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2022-11-16 16:28:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152669018] [2022-11-16 16:28:16,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 16:28:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 16:28:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-16 16:28:16,661 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,005 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-11-16 16:28:17,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 16:28:17,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 19 [2022-11-16 16:28:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,006 INFO L225 Difference]: With dead ends: 165 [2022-11-16 16:28:17,006 INFO L226 Difference]: Without dead ends: 165 [2022-11-16 16:28:17,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-11-16 16:28:17,007 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 312 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 144 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:28:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-16 16:28:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2022-11-16 16:28:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.439252336448598) internal successors, (154), 130 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2022-11-16 16:28:17,012 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 19 [2022-11-16 16:28:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,012 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2022-11-16 16:28:17,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2022-11-16 16:28:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:28:17,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:28:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:17,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 404025859, now seen corresponding path program 1 times [2022-11-16 16:28:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867724175] [2022-11-16 16:28:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867724175] [2022-11-16 16:28:17,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867724175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:28:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174039074] [2022-11-16 16:28:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:17,372 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,501 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-11-16 16:28:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 16:28:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,502 INFO L225 Difference]: With dead ends: 128 [2022-11-16 16:28:17,503 INFO L226 Difference]: Without dead ends: 128 [2022-11-16 16:28:17,503 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 [2022-11-16 16:28:17,504 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 189 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-16 16:28:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-16 16:28:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 127 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2022-11-16 16:28:17,511 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 19 [2022-11-16 16:28:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,513 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2022-11-16 16:28:17,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2022-11-16 16:28:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:28:17,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,518 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 16:28:17,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash -360214418, now seen corresponding path program 1 times [2022-11-16 16:28:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322040232] [2022-11-16 16:28:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:18,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322040232] [2022-11-16 16:28:18,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322040232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244158563] [2022-11-16 16:28:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:18,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:18,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:18,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:28:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:18,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 16:28:18,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:18,364 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 [2022-11-16 16:28:18,397 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 [2022-11-16 16:28:18,465 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 16:28:18,465 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 [2022-11-16 16:28:18,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:18,525 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 [2022-11-16 16:28:18,534 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 [2022-11-16 16:28:18,569 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 [2022-11-16 16:28:18,610 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 [2022-11-16 16:28:18,633 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 [2022-11-16 16:28:18,702 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 [2022-11-16 16:28:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:18,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:19,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:19,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:28:19,014 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 [2022-11-16 16:28:19,022 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 [2022-11-16 16:28:19,027 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 [2022-11-16 16:28:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:19,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244158563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:19,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [101571205] [2022-11-16 16:28:19,067 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-16 16:28:19,069 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:19,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:19,070 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:19,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:19,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,097 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 [2022-11-16 16:28:19,111 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 19 treesize of output 1 [2022-11-16 16:28:19,119 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 19 treesize of output 1 [2022-11-16 16:28:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,127 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 [2022-11-16 16:28:19,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,151 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 [2022-11-16 16:28:19,164 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 [2022-11-16 16:28:19,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,178 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 [2022-11-16 16:28:19,189 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 [2022-11-16 16:28:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,214 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 [2022-11-16 16:28:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,276 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 [2022-11-16 16:28:19,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,295 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 [2022-11-16 16:28:19,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,330 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 [2022-11-16 16:28:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,401 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 [2022-11-16 16:28:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,442 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 [2022-11-16 16:28:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,463 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 [2022-11-16 16:28:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,484 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 [2022-11-16 16:28:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,544 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 16:28:19,545 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 2 case distinctions, treesize of input 33 treesize of output 31 [2022-11-16 16:28:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,572 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 48 treesize of output 45 [2022-11-16 16:28:19,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,610 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 16:28:19,610 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 2 case distinctions, treesize of input 81 treesize of output 63 [2022-11-16 16:28:19,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:19,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:19,693 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 16:28:19,694 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 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 16:28:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,715 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 16:28:19,715 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 2 case distinctions, treesize of input 96 treesize of output 66 [2022-11-16 16:28:19,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,740 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 41 treesize of output 31 [2022-11-16 16:28:19,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:19,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-16 16:28:19,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:19,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:19,986 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-16 16:28:19,987 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 461 treesize of output 463 [2022-11-16 16:28:20,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:20,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:20,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:20,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,042 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-16 16:28:20,043 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 493 treesize of output 473 [2022-11-16 16:28:20,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,117 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-16 16:28:20,118 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 489 treesize of output 482 [2022-11-16 16:28:20,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,835 INFO L321 Elim1Store]: treesize reduction 192, result has 17.6 percent of original size [2022-11-16 16:28:20,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 982 treesize of output 809 [2022-11-16 16:28:20,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:20,988 INFO L321 Elim1Store]: treesize reduction 172, result has 19.2 percent of original size [2022-11-16 16:28:20,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 933 treesize of output 848 [2022-11-16 16:28:21,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:21,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:21,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:21,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:21,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:21,191 INFO L321 Elim1Store]: treesize reduction 402, result has 12.4 percent of original size [2022-11-16 16:28:21,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 890 treesize of output 847 [2022-11-16 16:28:22,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:22,282 INFO L321 Elim1Store]: treesize reduction 232, result has 6.1 percent of original size [2022-11-16 16:28:22,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1860 treesize of output 1531 [2022-11-16 16:28:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,423 INFO L321 Elim1Store]: treesize reduction 234, result has 17.0 percent of original size [2022-11-16 16:28:22,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1203 treesize of output 1136 [2022-11-16 16:28:22,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:22,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:22,500 INFO L321 Elim1Store]: treesize reduction 127, result has 8.0 percent of original size [2022-11-16 16:28:22,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1213 treesize of output 1105 [2022-11-16 16:28:23,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:23,371 INFO L321 Elim1Store]: treesize reduction 388, result has 10.8 percent of original size [2022-11-16 16:28:23,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 2104 treesize of output 1970 [2022-11-16 16:28:23,704 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 [2022-11-16 16:28:23,712 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 [2022-11-16 16:28:23,718 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 [2022-11-16 16:28:23,759 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 16:28:23,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-16 16:28:23,782 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:28:23,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-16 16:28:23,810 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 [2022-11-16 16:28:23,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:23,879 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-16 16:28:23,880 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 65 treesize of output 62 [2022-11-16 16:28:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:23,913 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-16 16:28:23,913 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 61 treesize of output 54 [2022-11-16 16:28:23,937 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 [2022-11-16 16:28:23,971 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:28:23,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-11-16 16:28:23,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:28:23,994 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 [2022-11-16 16:28:24,000 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 [2022-11-16 16:28:24,006 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 [2022-11-16 16:28:24,025 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 [2022-11-16 16:28:24,046 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:28:24,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-16 16:28:24,075 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 16:28:24,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-16 16:28:24,129 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 [2022-11-16 16:28:24,157 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-16 16:28:24,158 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 80 treesize of output 65 [2022-11-16 16:28:24,190 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-16 16:28:24,190 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 64 treesize of output 61 [2022-11-16 16:28:24,382 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:26,394 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3865#(and (<= (+ 8 |ULTIMATE.start_main_~end~0#1.offset|) (select |#length| |ULTIMATE.start_main_~end~0#1.base|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~null~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (= (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) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~null~0#1.offset| 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 [2022-11-16 16:28:26,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:26,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:26,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-11-16 16:28:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720323695] [2022-11-16 16:28:26,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 16:28:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 16:28:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1437, Unknown=6, NotChecked=0, Total=1640 [2022-11-16 16:28:26,399 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:27,340 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2022-11-16 16:28:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 16:28:27,345 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 16:28:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:27,346 INFO L225 Difference]: With dead ends: 189 [2022-11-16 16:28:27,346 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 16:28:27,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=370, Invalid=2174, Unknown=6, NotChecked=0, Total=2550 [2022-11-16 16:28:27,348 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 561 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:27,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 348 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 637 Invalid, 0 Unknown, 403 Unchecked, 0.5s Time] [2022-11-16 16:28:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 16:28:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2022-11-16 16:28:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 139 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2022-11-16 16:28:27,353 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 20 [2022-11-16 16:28:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:27,353 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2022-11-16 16:28:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2022-11-16 16:28:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 16:28:27,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:27,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:27,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:28:27,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 16:28:27,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1695487611, now seen corresponding path program 1 times [2022-11-16 16:28:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:27,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238615329] [2022-11-16 16:28:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:27,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:28:27,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238615329] [2022-11-16 16:28:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238615329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:27,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:27,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195387191] [2022-11-16 16:28:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:27,599 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:27,653 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-11-16 16:28:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:27,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 16:28:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:27,654 INFO L225 Difference]: With dead ends: 142 [2022-11-16 16:28:27,654 INFO L226 Difference]: Without dead ends: 142 [2022-11-16 16:28:27,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:27,655 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:27,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 73 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-16 16:28:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-16 16:28:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2022-11-16 16:28:27,660 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 24 [2022-11-16 16:28:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:27,660 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2022-11-16 16:28:27,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2022-11-16 16:28:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 16:28:27,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:27,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 16:28:27,662 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-16 16:28:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2088284808, now seen corresponding path program 1 times [2022-11-16 16:28:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:27,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161731155] [2022-11-16 16:28:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:28,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:28,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161731155] [2022-11-16 16:28:28,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161731155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539448168] [2022-11-16 16:28:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:28,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:28,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:28,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:28,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f6006a-7436-485a-a3e4-d82c1f169dd7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:28:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:28,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 16:28:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:28,706 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 [2022-11-16 16:28:28,735 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 [2022-11-16 16:28:28,786 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 16:28:28,787 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 [2022-11-16 16:28:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:28,827 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 [2022-11-16 16:28:28,839 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 [2022-11-16 16:28:28,881 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 [2022-11-16 16:28:28,915 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 [2022-11-16 16:28:28,938 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 [2022-11-16 16:28:28,947 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 16:28:28,948 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 [2022-11-16 16:28:28,986 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 [2022-11-16 16:28:28,995 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 [2022-11-16 16:28:29,028 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 [2022-11-16 16:28:29,061 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 [2022-11-16 16:28:29,075 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 [2022-11-16 16:28:29,127 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 [2022-11-16 16:28:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:29,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:29,244 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_711 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_711) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-16 16:28:29,398 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 16:28:29,399 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 [2022-11-16 16:28:29,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:29,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:28:29,603 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 [2022-11-16 16:28:29,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:29,610 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 [2022-11-16 16:28:29,616 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 [2022-11-16 16:28:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:29,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539448168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:29,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [919269521] [2022-11-16 16:28:29,651 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-16 16:28:29,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:29,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:29,652 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:29,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,673 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 [2022-11-16 16:28:29,687 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 19 treesize of output 1 [2022-11-16 16:28:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,695 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 [2022-11-16 16:28:29,703 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 19 treesize of output 1 [2022-11-16 16:28:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,724 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 [2022-11-16 16:28:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,736 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 [2022-11-16 16:28:29,746 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 [2022-11-16 16:28:29,755 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 [2022-11-16 16:28:29,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 16:28:29,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,826 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 [2022-11-16 16:28:29,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,851 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 [2022-11-16 16:28:29,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,866 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 [2022-11-16 16:28:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,883 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 [2022-11-16 16:28:29,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,950 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 34 treesize of output 43 [2022-11-16 16:28:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:29,987 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 [2022-11-16 16:28:30,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,007 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 [2022-11-16 16:28:30,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,024 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 [2022-11-16 16:28:30,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,118 INFO L321 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2022-11-16 16:28:30,118 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 2 case distinctions, treesize of input 48 treesize of output 65 [2022-11-16 16:28:30,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,168 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 16:28:30,168 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 2 case distinctions, treesize of input 81 treesize of output 63 [2022-11-16 16:28:30,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,188 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 33 treesize of output 31 [2022-11-16 16:28:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,233 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 16:28:30,234 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 2 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:28:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:30,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:30,277 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-16 16:28:30,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 82 [2022-11-16 16:28:30,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,311 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 16:28:30,312 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 2 case distinctions, treesize of input 153 treesize of output 111 [2022-11-16 16:28:30,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 56 [2022-11-16 16:28:30,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 65 [2022-11-16 16:28:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,423 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 33 treesize of output 31 [2022-11-16 16:28:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,446 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 33 treesize of output 31 [2022-11-16 16:28:30,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,541 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-11-16 16:28:30,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 252 treesize of output 168 [2022-11-16 16:28:30,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-11-16 16:28:30,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-16 16:28:30,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,677 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-16 16:28:30,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 164 [2022-11-16 16:28:30,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 84 [2022-11-16 16:28:30,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,743 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 52 treesize of output 45 [2022-11-16 16:28:30,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 71 [2022-11-16 16:28:30,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,956 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-11-16 16:28:30,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 333 treesize of output 213 [2022-11-16 16:28:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:30,985 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 44 treesize of output 45 [2022-11-16 16:28:31,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-11-16 16:28:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,158 INFO L321 Elim1Store]: treesize reduction 136, result has 17.6 percent of original size [2022-11-16 16:28:31,159 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 6 new quantified variables, introduced 9 case distinctions, treesize of input 431 treesize of output 241 [2022-11-16 16:28:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 93 [2022-11-16 16:28:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-16 16:28:31,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:31,358 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-16 16:28:31,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 436 treesize of output 270 [2022-11-16 16:28:31,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 102 [2022-11-16 16:28:31,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 34 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 79 [2022-11-16 16:28:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2022-11-16 16:28:31,620 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 [2022-11-16 16:28:31,625 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 [2022-11-16 16:28:31,629 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 [2022-11-16 16:28:31,644 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 [2022-11-16 16:28:31,662 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:28:31,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-16 16:28:31,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:28:31,682 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:28:31,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-16 16:28:31,708 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 [2022-11-16 16:28:31,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,738 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-16 16:28:31,739 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 82 treesize of output 79 [2022-11-16 16:28:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:31,787 INFO L321 Elim1Store]: treesize reduction 76, result has 29.0 percent of original size [2022-11-16 16:28:31,787 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 84 [2022-11-16 16:28:31,915 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-11-16 16:28:31,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 91 [2022-11-16 16:28:31,941 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 16:28:31,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 74 [2022-11-16 16:28:32,068 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-11-16 16:28:32,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 93 [2022-11-16 16:28:32,123 INFO L321 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-11-16 16:28:32,124 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 78 treesize of output 76 [2022-11-16 16:28:32,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:32,183 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 25 treesize of output 13 [2022-11-16 16:28:32,845 INFO L321 Elim1Store]: treesize reduction 216, result has 58.6 percent of original size [2022-11-16 16:28:32,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 535 treesize of output 776 [2022-11-16 16:28:33,330 INFO L321 Elim1Store]: treesize reduction 112, result has 67.3 percent of original size [2022-11-16 16:28:33,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 641 treesize of output 621 [2022-11-16 16:28:33,480 INFO L321 Elim1Store]: treesize reduction 160, result has 15.3 percent of original size [2022-11-16 16:28:33,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 283 treesize of output 280 [2022-11-16 16:39:36,638 WARN L233 SmtUtils]: Spent 23.76s on a formula simplification that was a NOOP. DAG size: 1823 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:39:59,782 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 1819 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:40:19,865 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 1426 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:40:39,680 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification that was a NOOP. DAG size: 1422 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:40:54,561 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:43:00,577 WARN L233 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 1178 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)