./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:17:48,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:17:48,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:17:48,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:17:48,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:17:48,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:17:48,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:17:48,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:17:48,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:17:48,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:17:48,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:17:48,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:17:48,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:17:48,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:17:48,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:17:48,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:17:48,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:17:48,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:17:48,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:17:48,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:17:48,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:17:48,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:17:48,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:17:48,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:17:48,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:17:48,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:17:48,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:17:48,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:17:48,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:17:48,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:17:48,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:17:48,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:17:48,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:17:48,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:17:48,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:17:48,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:17:48,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:17:48,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:17:48,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:17:48,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:17:48,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:17:48,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:17:48,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:17:48,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:17:48,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:17:48,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:17:48,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:17:48,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:17:48,951 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:17:48,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:17:48,952 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:17:48,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:17:48,952 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:17:48,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:17:48,953 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:17:48,953 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:17:48,953 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:17:48,954 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:17:48,954 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:17:48,954 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:17:48,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:17:48,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:17:48,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:17:48,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:17:48,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:17:48,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:17:48,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:17:48,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:17:48,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:17:48,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:17:48,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:17:48,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:17:48,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:17:48,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:17:48,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:17:48,958 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:17:48,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:17:48,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:17:48,958 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_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2022-12-14 14:17:49,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:17:49,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:17:49,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:17:49,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:17:49,193 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:17:49,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-12-14 14:17:51,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:17:51,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:17:51,998 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-12-14 14:17:52,008 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/data/b2362f382/ef97339e248b4566b71dee1a0018ad1a/FLAGbaa045d76 [2022-12-14 14:17:52,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/data/b2362f382/ef97339e248b4566b71dee1a0018ad1a [2022-12-14 14:17:52,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:17:52,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:17:52,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:17:52,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:17:52,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:17:52,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c048f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52, skipping insertion in model container [2022-12-14 14:17:52,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:17:52,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:17:52,589 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-12-14 14:17:52,593 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-12-14 14:17:52,596 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-12-14 14:17:52,596 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-12-14 14:17:52,597 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-12-14 14:17:52,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-12-14 14:17:52,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:17:52,608 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:17:52,632 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-12-14 14:17:52,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-12-14 14:17:52,636 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-12-14 14:17:52,637 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-12-14 14:17:52,638 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-12-14 14:17:52,638 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-12-14 14:17:52,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:17:52,655 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:17:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52 WrapperNode [2022-12-14 14:17:52,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:17:52,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:17:52,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:17:52,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:17:52,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,689 INFO L138 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 197 [2022-12-14 14:17:52,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:17:52,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:17:52,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:17:52,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:17:52,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:17:52,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:17:52,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:17:52,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:17:52,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (1/1) ... [2022-12-14 14:17:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:17:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:17:52,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:17:52,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:17:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:17:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:17:52,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:17:52,860 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:17:52,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:17:53,231 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:17:53,270 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:17:53,270 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-12-14 14:17:53,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:17:53 BoogieIcfgContainer [2022-12-14 14:17:53,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:17:53,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:17:53,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:17:53,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:17:53,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:17:52" (1/3) ... [2022-12-14 14:17:53,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f012c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:17:53, skipping insertion in model container [2022-12-14 14:17:53,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:17:52" (2/3) ... [2022-12-14 14:17:53,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f012c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:17:53, skipping insertion in model container [2022-12-14 14:17:53,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:17:53" (3/3) ... [2022-12-14 14:17:53,279 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2022-12-14 14:17:53,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:17:53,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-12-14 14:17:53,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:17:53,332 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;@7bde6ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:17:53,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-12-14 14:17:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 74 states have (on average 2.5135135135135136) internal successors, (186), 154 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 14:17:53,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:53,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 14:17:53,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash 12342, now seen corresponding path program 1 times [2022-12-14 14:17:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:53,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910336504] [2022-12-14 14:17:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:53,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910336504] [2022-12-14 14:17:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910336504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:53,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:53,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:17:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952441477] [2022-12-14 14:17:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:53,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:17:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:17:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:53,563 INFO L87 Difference]: Start difference. First operand has 155 states, 74 states have (on average 2.5135135135135136) internal successors, (186), 154 states have internal predecessors, (186), 0 states have call successors, (0), 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) [2022-12-14 14:17:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:53,702 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-12-14 14:17:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:17:53,705 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 [2022-12-14 14:17:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:53,712 INFO L225 Difference]: With dead ends: 156 [2022-12-14 14:17:53,713 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 14:17:53,714 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 [2022-12-14 14:17:53,717 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 148 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:53,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 86 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 14:17:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2022-12-14 14:17:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 74 states have (on average 2.1621621621621623) internal successors, (160), 150 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2022-12-14 14:17:53,751 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 2 [2022-12-14 14:17:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:53,751 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2022-12-14 14:17:53,751 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) [2022-12-14 14:17:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2022-12-14 14:17:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 14:17:53,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:53,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 14:17:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:17:53,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 12343, now seen corresponding path program 1 times [2022-12-14 14:17:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049093628] [2022-12-14 14:17:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:53,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049093628] [2022-12-14 14:17:53,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049093628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:53,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:17:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850434788] [2022-12-14 14:17:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:53,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:17:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:17:53,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:53,838 INFO L87 Difference]: Start difference. First operand 151 states and 160 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) [2022-12-14 14:17:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:53,947 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2022-12-14 14:17:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:17:53,948 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 [2022-12-14 14:17:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:53,949 INFO L225 Difference]: With dead ends: 151 [2022-12-14 14:17:53,949 INFO L226 Difference]: Without dead ends: 151 [2022-12-14 14:17:53,949 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 [2022-12-14 14:17:53,950 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 144 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:53,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 86 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-14 14:17:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2022-12-14 14:17:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 74 states have (on average 2.1216216216216215) internal successors, (157), 147 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2022-12-14 14:17:53,957 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 2 [2022-12-14 14:17:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:53,957 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2022-12-14 14:17:53,958 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) [2022-12-14 14:17:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2022-12-14 14:17:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:17:53,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:53,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:17:53,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1141734222, now seen corresponding path program 1 times [2022-12-14 14:17:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:53,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782816484] [2022-12-14 14:17:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:54,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782816484] [2022-12-14 14:17:54,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782816484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:54,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:54,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:17:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685608901] [2022-12-14 14:17:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:17:54,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:17:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:17:54,072 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:54,202 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2022-12-14 14:17:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:17:54,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-14 14:17:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:54,204 INFO L225 Difference]: With dead ends: 152 [2022-12-14 14:17:54,204 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 14:17:54,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:17:54,206 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 251 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:54,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 61 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 14:17:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2022-12-14 14:17:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.8735632183908046) internal successors, (163), 142 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) [2022-12-14 14:17:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2022-12-14 14:17:54,212 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 7 [2022-12-14 14:17:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:54,212 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2022-12-14 14:17:54,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2022-12-14 14:17:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:17:54,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:54,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:54,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:17:54,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1141734223, now seen corresponding path program 1 times [2022-12-14 14:17:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:54,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521633492] [2022-12-14 14:17:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:54,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:54,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521633492] [2022-12-14 14:17:54,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521633492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:54,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:54,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:17:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913709770] [2022-12-14 14:17:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:54,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:17:54,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:54,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:17:54,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:17:54,337 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:54,604 INFO L93 Difference]: Finished difference Result 215 states and 236 transitions. [2022-12-14 14:17:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:17:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-14 14:17:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:54,605 INFO L225 Difference]: With dead ends: 215 [2022-12-14 14:17:54,605 INFO L226 Difference]: Without dead ends: 215 [2022-12-14 14:17:54,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:17:54,606 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 486 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:54,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 121 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:17:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-14 14:17:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2022-12-14 14:17:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 129 states have (on average 1.751937984496124) internal successors, (226), 184 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2022-12-14 14:17:54,615 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 7 [2022-12-14 14:17:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:54,616 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2022-12-14 14:17:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2022-12-14 14:17:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:17:54,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:54,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:54,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:17:54,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1989906968, now seen corresponding path program 1 times [2022-12-14 14:17:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:54,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856735158] [2022-12-14 14:17:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:54,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:54,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856735158] [2022-12-14 14:17:54,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856735158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:54,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:17:54,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293294286] [2022-12-14 14:17:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:17:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:17:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:54,648 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:54,689 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2022-12-14 14:17:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:17:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:17:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:54,691 INFO L225 Difference]: With dead ends: 220 [2022-12-14 14:17:54,692 INFO L226 Difference]: Without dead ends: 220 [2022-12-14 14:17:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:17:54,693 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 98 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 169 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:17:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-14 14:17:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2022-12-14 14:17:54,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 131 states have (on average 1.7328244274809161) internal successors, (227), 186 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2022-12-14 14:17:54,702 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 9 [2022-12-14 14:17:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:54,702 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2022-12-14 14:17:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2022-12-14 14:17:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:17:54,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:54,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:17:54,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1990247744, now seen corresponding path program 1 times [2022-12-14 14:17:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357738528] [2022-12-14 14:17:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:54,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:54,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357738528] [2022-12-14 14:17:54,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357738528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:54,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:54,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:17:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482249652] [2022-12-14 14:17:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:54,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:17:54,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:17:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:17:54,876 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:55,039 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-12-14 14:17:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:17:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:17:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:55,040 INFO L225 Difference]: With dead ends: 186 [2022-12-14 14:17:55,040 INFO L226 Difference]: Without dead ends: 186 [2022-12-14 14:17:55,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:17:55,041 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 5 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:55,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 297 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-14 14:17:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-12-14 14:17:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 131 states have (on average 1.717557251908397) internal successors, (225), 185 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 225 transitions. [2022-12-14 14:17:55,048 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 225 transitions. Word has length 9 [2022-12-14 14:17:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:55,048 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 225 transitions. [2022-12-14 14:17:55,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 225 transitions. [2022-12-14 14:17:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:17:55,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:55,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:55,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:17:55,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1990247743, now seen corresponding path program 1 times [2022-12-14 14:17:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:55,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649169782] [2022-12-14 14:17:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:55,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649169782] [2022-12-14 14:17:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649169782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:17:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908928048] [2022-12-14 14:17:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:17:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:17:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:17:55,122 INFO L87 Difference]: Start difference. First operand 186 states and 225 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:55,249 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2022-12-14 14:17:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:17:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:17:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:55,250 INFO L225 Difference]: With dead ends: 185 [2022-12-14 14:17:55,250 INFO L226 Difference]: Without dead ends: 185 [2022-12-14 14:17:55,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:17:55,251 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 4 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:55,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 319 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-12-14 14:17:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-12-14 14:17:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 131 states have (on average 1.702290076335878) internal successors, (223), 184 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2022-12-14 14:17:55,255 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 9 [2022-12-14 14:17:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2022-12-14 14:17:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2022-12-14 14:17:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:17:55,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:55,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:55,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:17:55,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1367973544, now seen corresponding path program 1 times [2022-12-14 14:17:55,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:55,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404528687] [2022-12-14 14:17:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:55,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:55,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404528687] [2022-12-14 14:17:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404528687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:55,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:55,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:17:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044805967] [2022-12-14 14:17:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:55,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:17:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:17:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:17:55,397 INFO L87 Difference]: Start difference. First operand 185 states and 223 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:55,616 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2022-12-14 14:17:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:17:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 14:17:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:55,618 INFO L225 Difference]: With dead ends: 189 [2022-12-14 14:17:55,618 INFO L226 Difference]: Without dead ends: 189 [2022-12-14 14:17:55,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:17:55,619 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 245 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:55,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 158 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:17:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-14 14:17:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2022-12-14 14:17:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 183 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2022-12-14 14:17:55,622 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 11 [2022-12-14 14:17:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:55,622 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2022-12-14 14:17:55,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2022-12-14 14:17:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:17:55,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:55,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:17:55,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1367973545, now seen corresponding path program 1 times [2022-12-14 14:17:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:55,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669906672] [2022-12-14 14:17:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:55,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:55,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669906672] [2022-12-14 14:17:55,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669906672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:55,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:55,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 14:17:55,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202336704] [2022-12-14 14:17:55,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:55,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 14:17:55,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:55,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 14:17:55,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:17:55,820 INFO L87 Difference]: Start difference. First operand 184 states and 222 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:56,250 INFO L93 Difference]: Finished difference Result 183 states and 217 transitions. [2022-12-14 14:17:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:17:56,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 14:17:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:56,251 INFO L225 Difference]: With dead ends: 183 [2022-12-14 14:17:56,251 INFO L226 Difference]: Without dead ends: 183 [2022-12-14 14:17:56,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:17:56,252 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 237 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:56,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 276 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:17:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-14 14:17:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2022-12-14 14:17:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 125 states have (on average 1.68) internal successors, (210), 171 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2022-12-14 14:17:56,256 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 11 [2022-12-14 14:17:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:56,257 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2022-12-14 14:17:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2022-12-14 14:17:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:17:56,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:56,257 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:17:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:17:56,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash -77941124, now seen corresponding path program 1 times [2022-12-14 14:17:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:56,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547671961] [2022-12-14 14:17:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:56,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:17:56,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547671961] [2022-12-14 14:17:56,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547671961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:17:56,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:17:56,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:17:56,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384957298] [2022-12-14 14:17:56,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:17:56,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:17:56,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:17:56,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:17:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:17:56,316 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:17:56,424 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2022-12-14 14:17:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:17:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 14:17:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:17:56,426 INFO L225 Difference]: With dead ends: 201 [2022-12-14 14:17:56,426 INFO L226 Difference]: Without dead ends: 201 [2022-12-14 14:17:56,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:17:56,427 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 247 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:17:56,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 147 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:17:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-14 14:17:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-12-14 14:17:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 124 states have (on average 1.6612903225806452) internal successors, (206), 169 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2022-12-14 14:17:56,431 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 18 [2022-12-14 14:17:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:17:56,431 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2022-12-14 14:17:56,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:17:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2022-12-14 14:17:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:17:56,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:17:56,432 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] [2022-12-14 14:17:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:17:56,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-12-14 14:17:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:17:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1462926702, now seen corresponding path program 1 times [2022-12-14 14:17:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:17:56,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570049724] [2022-12-14 14:17:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:17:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:56,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:17:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570049724] [2022-12-14 14:17:56,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570049724] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:17:56,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737250030] [2022-12-14 14:17:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:17:56,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:17:56,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:17:56,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:17:56,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb35c04-a549-4bd8-a205-65cb907f8b4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:17:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:17:56,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 14:17:56,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:17:56,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:17:56,945 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:17:56,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:17:56,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:17:57,073 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:17:57,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-14 14:17:57,118 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:17:57,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-12-14 14:17:57,151 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:17:57,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-14 14:17:57,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:17:57,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:17:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:17:57,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:17:59,799 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:17:59,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-12-14 14:17:59,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:17:59,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 227 [2022-12-14 14:17:59,821 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 212 treesize of output 204 [2022-12-14 14:17:59,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:17:59,832 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 204 treesize of output 196 [2022-12-14 14:18:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:18:05,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737250030] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:18:05,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1389679196] [2022-12-14 14:18:05,243 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 14:18:05,243 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:18:05,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:18:05,250 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:18:05,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:18:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,285 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 [2022-12-14 14:18:05,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:18:05,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:18:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 14:18:05,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,335 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 21 treesize of output 20 [2022-12-14 14:18:05,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,346 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 21 treesize of output 20 [2022-12-14 14:18:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,356 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 34 treesize of output 21 [2022-12-14 14:18:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,375 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 36 treesize of output 23 [2022-12-14 14:18:05,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,388 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 36 treesize of output 23 [2022-12-14 14:18:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,399 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 [2022-12-14 14:18:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,435 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 [2022-12-14 14:18:05,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-12-14 14:18:05,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,471 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 23 [2022-12-14 14:18:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,486 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 [2022-12-14 14:18:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:18:05,525 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 14:18:05,526 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 125 [2022-12-14 14:18:05,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,539 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2022-12-14 14:18:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,554 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 63 treesize of output 33 [2022-12-14 14:18:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,613 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 14:18:05,614 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 1 case distinctions, treesize of input 39 treesize of output 43 [2022-12-14 14:18:05,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:18:05,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:18:05,647 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 14:18:05,648 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 3 case distinctions, treesize of input 135 treesize of output 107 [2022-12-14 14:18:05,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,672 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 14:18:05,672 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 64 [2022-12-14 14:18:05,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,715 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 47 treesize of output 52 [2022-12-14 14:18:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,733 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 50 treesize of output 43 [2022-12-14 14:18:05,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,749 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 50 treesize of output 43 [2022-12-14 14:18:05,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,811 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 [2022-12-14 14:18:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2022-12-14 14:18:05,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,860 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 58 treesize of output 55 [2022-12-14 14:18:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:18:05,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2022-12-14 14:18:05,938 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:18:05,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-12-14 14:18:05,968 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-14 14:18:05,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-12-14 14:18:05,975 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 27 treesize of output 1 [2022-12-14 14:18:06,069 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 [2022-12-14 14:18:07,097 INFO L321 Elim1Store]: treesize reduction 172, result has 75.3 percent of original size [2022-12-14 14:18:07,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 384 treesize of output 800 [2022-12-14 14:18:08,081 INFO L321 Elim1Store]: treesize reduction 140, result has 75.4 percent of original size [2022-12-14 14:18:08,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 538 treesize of output 848