./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur --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 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:55:19,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:55:19,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:55:19,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:55:19,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:55:19,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:55:19,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:55:19,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:55:19,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:55:19,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:55:19,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:55:19,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:55:19,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:55:19,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:55:19,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:55:19,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:55:19,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:55:19,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:55:19,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:55:19,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:55:19,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:55:19,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:55:19,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:55:19,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:55:19,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:55:19,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:55:19,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:55:19,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:55:19,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:55:19,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:55:19,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:55:19,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:55:19,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:55:19,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:55:19,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:55:19,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:55:19,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:55:19,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:55:19,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:55:19,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:55:19,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:55:19,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:55:19,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:55:19,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:55:19,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:55:19,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:55:19,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:55:19,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:55:19,925 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:55:19,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:55:19,926 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:55:19,926 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:55:19,927 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:55:19,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:55:19,928 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:55:19,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:55:19,928 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:55:19,928 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:55:19,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:55:19,929 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:55:19,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:55:19,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:55:19,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:55:19,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:55:19,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:55:19,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:55:19,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:55:19,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:55:19,931 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:55:19,932 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:55:19,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:55:19,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:55:19,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:55:19,933 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:55:19,933 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:55:19,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:55:19,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:55:19,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:55:19,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:55:19,934 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:55:19,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:55:19,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:55:19,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:55:19,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:55:19,936 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_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2022-11-26 00:55:20,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:55:20,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:55:20,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:55:20,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:55:20,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:55:20,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-26 00:55:23,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:55:24,008 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:55:24,009 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-26 00:55:24,025 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/data/c419337c3/9ba44ed1ff0548779feccd094f84ffc4/FLAG1bdf5f47e [2022-11-26 00:55:24,041 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/data/c419337c3/9ba44ed1ff0548779feccd094f84ffc4 [2022-11-26 00:55:24,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:55:24,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:55:24,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:55:24,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:55:24,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:55:24,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca9fa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24, skipping insertion in model container [2022-11-26 00:55:24,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:55:24,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:55:24,417 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_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-26 00:55:24,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:55:24,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:55:24,506 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_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-26 00:55:24,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:55:24,585 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:55:24,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24 WrapperNode [2022-11-26 00:55:24,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:55:24,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:55:24,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:55:24,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:55:24,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,642 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2022-11-26 00:55:24,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:55:24,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:55:24,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:55:24,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:55:24,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:55:24,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:55:24,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:55:24,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:55:24,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (1/1) ... [2022-11-26 00:55:24,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:55:24,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:24,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:55:24,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:55:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-26 00:55:24,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-26 00:55:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:55:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:55:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:55:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:55:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:55:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-11-26 00:55:24,807 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-11-26 00:55:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:55:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:55:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-11-26 00:55:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-11-26 00:55:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:55:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-11-26 00:55:24,808 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-11-26 00:55:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:55:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:55:25,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:55:25,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:55:25,694 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:55:25,759 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:55:25,772 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-11-26 00:55:25,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:55:25 BoogieIcfgContainer [2022-11-26 00:55:25,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:55:25,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:55:25,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:55:25,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:55:25,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:55:24" (1/3) ... [2022-11-26 00:55:25,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3bbd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:55:25, skipping insertion in model container [2022-11-26 00:55:25,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:55:24" (2/3) ... [2022-11-26 00:55:25,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3bbd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:55:25, skipping insertion in model container [2022-11-26 00:55:25,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:55:25" (3/3) ... [2022-11-26 00:55:25,786 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2022-11-26 00:55:25,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:55:25,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2022-11-26 00:55:25,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:55:25,867 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;@313de4c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:55:25,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2022-11-26 00:55:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 92 states have (on average 2.3152173913043477) internal successors, (213), 180 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-26 00:55:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:55:25,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:25,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:55:25,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 536459, now seen corresponding path program 1 times [2022-11-26 00:55:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:25,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846695689] [2022-11-26 00:55:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:26,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:26,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846695689] [2022-11-26 00:55:26,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846695689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:26,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:26,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:55:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35119677] [2022-11-26 00:55:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:55:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:26,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:55:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:55:26,153 INFO L87 Difference]: Start difference. First operand has 194 states, 92 states have (on average 2.3152173913043477) internal successors, (213), 180 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:26,263 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2022-11-26 00:55:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:55:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:55:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:26,275 INFO L225 Difference]: With dead ends: 193 [2022-11-26 00:55:26,275 INFO L226 Difference]: Without dead ends: 192 [2022-11-26 00:55:26,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:55:26,280 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:26,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:55:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-26 00:55:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-26 00:55:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 89 states have (on average 2.101123595505618) internal successors, (187), 178 states have internal predecessors, (187), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2022-11-26 00:55:26,358 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 3 [2022-11-26 00:55:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:26,358 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2022-11-26 00:55:26,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2022-11-26 00:55:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:55:26,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:26,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:55:26,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:55:26,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting chain_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash 16931764, now seen corresponding path program 1 times [2022-11-26 00:55:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:26,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147775165] [2022-11-26 00:55:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:26,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147775165] [2022-11-26 00:55:26,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147775165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:26,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:26,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:55:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297652203] [2022-11-26 00:55:26,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:55:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:55:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:55:26,533 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:26,704 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-11-26 00:55:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:55:26,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:55:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:26,706 INFO L225 Difference]: With dead ends: 190 [2022-11-26 00:55:26,706 INFO L226 Difference]: Without dead ends: 190 [2022-11-26 00:55:26,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:55:26,707 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 288 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:55:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-26 00:55:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-26 00:55:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 176 states have internal predecessors, (185), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2022-11-26 00:55:26,720 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 4 [2022-11-26 00:55:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2022-11-26 00:55:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2022-11-26 00:55:26,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:55:26,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:26,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:55:26,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:55:26,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting chain_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash 16931765, now seen corresponding path program 1 times [2022-11-26 00:55:26,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:26,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004132288] [2022-11-26 00:55:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:26,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:26,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:26,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004132288] [2022-11-26 00:55:26,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004132288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:26,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:26,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:55:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203184183] [2022-11-26 00:55:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:26,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:55:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:55:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:55:26,927 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:27,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:27,123 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2022-11-26 00:55:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:55:27,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:55:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:27,124 INFO L225 Difference]: With dead ends: 188 [2022-11-26 00:55:27,125 INFO L226 Difference]: Without dead ends: 188 [2022-11-26 00:55:27,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:55:27,126 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 11 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:27,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:55:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-26 00:55:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-26 00:55:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 89 states have (on average 2.056179775280899) internal successors, (183), 174 states have internal predecessors, (183), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2022-11-26 00:55:27,139 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 4 [2022-11-26 00:55:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:27,139 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2022-11-26 00:55:27,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2022-11-26 00:55:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:55:27,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:27,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:55:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:55:27,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting chain_nodeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash -908428318, now seen corresponding path program 1 times [2022-11-26 00:55:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649542987] [2022-11-26 00:55:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:27,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:27,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649542987] [2022-11-26 00:55:27,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649542987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:27,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:27,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:55:27,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970235097] [2022-11-26 00:55:27,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:27,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:55:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:55:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:55:27,446 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:27,811 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2022-11-26 00:55:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:55:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:55:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:27,813 INFO L225 Difference]: With dead ends: 183 [2022-11-26 00:55:27,813 INFO L226 Difference]: Without dead ends: 183 [2022-11-26 00:55:27,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:55:27,826 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:27,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 578 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:55:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-26 00:55:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-26 00:55:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 89 states have (on average 2.0) internal successors, (178), 169 states have internal predecessors, (178), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2022-11-26 00:55:27,857 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 6 [2022-11-26 00:55:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:27,858 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2022-11-26 00:55:27,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2022-11-26 00:55:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:55:27,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:27,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:55:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:55:27,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting chain_nodeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -908428317, now seen corresponding path program 1 times [2022-11-26 00:55:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:27,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019695242] [2022-11-26 00:55:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:28,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019695242] [2022-11-26 00:55:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019695242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:28,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:28,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:55:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766528654] [2022-11-26 00:55:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:55:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:55:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:55:28,163 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:28,508 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-11-26 00:55:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:55:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:55:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:28,510 INFO L225 Difference]: With dead ends: 178 [2022-11-26 00:55:28,510 INFO L226 Difference]: Without dead ends: 178 [2022-11-26 00:55:28,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:55:28,511 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 29 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:28,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 408 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:55:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-26 00:55:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-26 00:55:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 164 states have internal predecessors, (173), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2022-11-26 00:55:28,520 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 6 [2022-11-26 00:55:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:28,520 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2022-11-26 00:55:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2022-11-26 00:55:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:55:28,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:28,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:55:28,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting chain_nodeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493348, now seen corresponding path program 1 times [2022-11-26 00:55:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:28,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597337095] [2022-11-26 00:55:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:28,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:28,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597337095] [2022-11-26 00:55:28,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597337095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:28,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:28,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:55:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094452574] [2022-11-26 00:55:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:28,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:55:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:28,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:55:28,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:55:28,641 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:28,813 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-26 00:55:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:55:28,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:55:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:28,815 INFO L225 Difference]: With dead ends: 177 [2022-11-26 00:55:28,815 INFO L226 Difference]: Without dead ends: 177 [2022-11-26 00:55:28,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:55:28,816 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 8 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:28,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 386 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:55:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-26 00:55:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-26 00:55:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 89 states have (on average 1.9325842696629214) internal successors, (172), 163 states have internal predecessors, (172), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:28,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-11-26 00:55:28,824 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 7 [2022-11-26 00:55:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:28,824 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-11-26 00:55:28,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:28,824 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-11-26 00:55:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:55:28,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:28,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:28,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:55:28,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting chain_nodeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493349, now seen corresponding path program 1 times [2022-11-26 00:55:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799720570] [2022-11-26 00:55:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:28,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:28,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799720570] [2022-11-26 00:55:28,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799720570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:28,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:28,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:55:28,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317413173] [2022-11-26 00:55:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:55:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:55:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:55:28,939 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:29,140 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2022-11-26 00:55:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:55:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:55:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:29,142 INFO L225 Difference]: With dead ends: 176 [2022-11-26 00:55:29,142 INFO L226 Difference]: Without dead ends: 176 [2022-11-26 00:55:29,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:55:29,144 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:29,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 392 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:55:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-26 00:55:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-26 00:55:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 89 states have (on average 1.9213483146067416) internal successors, (171), 162 states have internal predecessors, (171), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2022-11-26 00:55:29,158 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 7 [2022-11-26 00:55:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:29,158 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2022-11-26 00:55:29,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2022-11-26 00:55:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:55:29,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:29,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:55:29,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash -365221685, now seen corresponding path program 1 times [2022-11-26 00:55:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:29,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335917014] [2022-11-26 00:55:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:29,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:29,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335917014] [2022-11-26 00:55:29,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335917014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:29,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:29,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:55:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514178475] [2022-11-26 00:55:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:29,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:55:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:29,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:55:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:55:29,425 INFO L87 Difference]: Start difference. First operand 176 states and 197 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:55:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:29,833 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2022-11-26 00:55:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:55:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-26 00:55:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:29,836 INFO L225 Difference]: With dead ends: 175 [2022-11-26 00:55:29,836 INFO L226 Difference]: Without dead ends: 175 [2022-11-26 00:55:29,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:55:29,837 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 153 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:29,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 296 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:55:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-26 00:55:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-26 00:55:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 89 states have (on average 1.9101123595505618) internal successors, (170), 161 states have internal predecessors, (170), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2022-11-26 00:55:29,859 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 13 [2022-11-26 00:55:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:29,861 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2022-11-26 00:55:29,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:55:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2022-11-26 00:55:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:55:29,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:29,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:29,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:55:29,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:29,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -365221684, now seen corresponding path program 1 times [2022-11-26 00:55:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:29,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686153549] [2022-11-26 00:55:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:30,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686153549] [2022-11-26 00:55:30,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686153549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:30,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:30,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:55:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525852027] [2022-11-26 00:55:30,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:30,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:55:30,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:30,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:55:30,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:55:30,201 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:55:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:30,580 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2022-11-26 00:55:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:55:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-26 00:55:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:30,582 INFO L225 Difference]: With dead ends: 174 [2022-11-26 00:55:30,582 INFO L226 Difference]: Without dead ends: 174 [2022-11-26 00:55:30,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:55:30,583 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 331 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:30,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 131 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:55:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-26 00:55:30,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-26 00:55:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 89 states have (on average 1.898876404494382) internal successors, (169), 160 states have internal predecessors, (169), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2022-11-26 00:55:30,591 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 13 [2022-11-26 00:55:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:30,592 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2022-11-26 00:55:30,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:55:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2022-11-26 00:55:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:55:30,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:30,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:55:30,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547253, now seen corresponding path program 1 times [2022-11-26 00:55:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:30,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185667514] [2022-11-26 00:55:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:55:31,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:31,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185667514] [2022-11-26 00:55:31,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185667514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:31,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698429444] [2022-11-26 00:55:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:31,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:31,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:55:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:31,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-26 00:55:31,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:31,628 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-26 00:55:31,629 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 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-26 00:55:31,689 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 9 treesize of output 7 [2022-11-26 00:55:31,717 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_333 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_333))) is different from true [2022-11-26 00:55:31,734 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_333 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_~node~0#1.base| v_ArrVal_333))) is different from true [2022-11-26 00:55:32,765 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:55:32,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 22 [2022-11-26 00:55:32,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:55:32,920 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 15 treesize of output 19 [2022-11-26 00:55:32,948 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_334 Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_334))))) is different from true [2022-11-26 00:55:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,030 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:55:33,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-26 00:55:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-26 00:55:33,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:33,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698429444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2008809872] [2022-11-26 00:55:33,207 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-26 00:55:33,207 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:33,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:33,217 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:33,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:33,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:55:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,426 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:33,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:33,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:55:33,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:55:33,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:33,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:33,487 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 15 treesize of output 1 [2022-11-26 00:55:33,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:55:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,512 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 [2022-11-26 00:55:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,523 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 [2022-11-26 00:55:33,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,592 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:55:33,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:55:33,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:33,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,663 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:55:33,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:55:33,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:33,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,773 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:55:33,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:55:33,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,847 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:55:33,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:55:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:33,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:55:33,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:33,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,088 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:34,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:34,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:55:34,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,327 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 15 treesize of output 15 [2022-11-26 00:55:34,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:34,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,357 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 15 treesize of output 15 [2022-11-26 00:55:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,456 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:34,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:34,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:55:34,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:55:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,664 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:34,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:34,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:34,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:55:34,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:55:34,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:34,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:34,966 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:34,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:35,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:35,073 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:35,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:35,104 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 119 for LOIs [2022-11-26 00:55:36,172 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:51,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3620#(and (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |ULTIMATE.start_create_sll_~#list~0#1.base|) 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (not (= (select |#valid| |ULTIMATE.start_create_sll_~pp1#1.base|) 1)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_create_sll_~#list~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:55:51,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:51,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:55:51,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-26 00:55:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317249284] [2022-11-26 00:55:51,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:51,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:55:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:51,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:55:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=792, Unknown=3, NotChecked=180, Total=1122 [2022-11-26 00:55:51,442 INFO L87 Difference]: Start difference. First operand 174 states and 195 transitions. Second operand has 17 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:55:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:52,409 INFO L93 Difference]: Finished difference Result 175 states and 195 transitions. [2022-11-26 00:55:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:55:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-11-26 00:55:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:52,411 INFO L225 Difference]: With dead ends: 175 [2022-11-26 00:55:52,411 INFO L226 Difference]: Without dead ends: 175 [2022-11-26 00:55:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=192, Invalid=1007, Unknown=3, NotChecked=204, Total=1406 [2022-11-26 00:55:52,412 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 216 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 575 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 459 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 785 Invalid, 0 Unknown, 575 Unchecked, 0.7s Time] [2022-11-26 00:55:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-26 00:55:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-11-26 00:55:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 89 states have (on average 1.8876404494382022) internal successors, (168), 159 states have internal predecessors, (168), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:55:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2022-11-26 00:55:52,418 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 25 [2022-11-26 00:55:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:52,418 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2022-11-26 00:55:52,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:55:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2022-11-26 00:55:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:55:52,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:52,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:52,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:55:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:55:52,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547254, now seen corresponding path program 1 times [2022-11-26 00:55:52,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:52,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678970774] [2022-11-26 00:55:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:52,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:55:53,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:53,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678970774] [2022-11-26 00:55:53,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678970774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:53,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:53,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:55:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87769876] [2022-11-26 00:55:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:55:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:55:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:55:53,557 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:55:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:54,323 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2022-11-26 00:55:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:55:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-26 00:55:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:54,326 INFO L225 Difference]: With dead ends: 302 [2022-11-26 00:55:54,326 INFO L226 Difference]: Without dead ends: 302 [2022-11-26 00:55:54,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:55:54,327 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 172 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:54,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 313 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:55:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-26 00:55:54,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 183. [2022-11-26 00:55:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 97 states have (on average 1.8350515463917525) internal successors, (178), 167 states have internal predecessors, (178), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:55:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2022-11-26 00:55:54,336 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 25 [2022-11-26 00:55:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:54,336 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2022-11-26 00:55:54,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:55:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2022-11-26 00:55:54,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-26 00:55:54,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:54,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:54,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:55:54,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:55:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash -70063145, now seen corresponding path program 1 times [2022-11-26 00:55:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:54,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713011279] [2022-11-26 00:55:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:55:55,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:55,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713011279] [2022-11-26 00:55:55,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713011279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:55,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928009547] [2022-11-26 00:55:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:55,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:55,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:55:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-26 00:55:55,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:55:55,658 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:55:55,659 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 23 treesize of output 19 [2022-11-26 00:55:55,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:55:55,700 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_597 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_597))) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:55:55,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:55:55,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:55:55,803 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_598 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_598))) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:55:55,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:55:55,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:55:55,892 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_599 Int)) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_599) |c_#length|)) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:55:55,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:55,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:55:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 18 not checked. [2022-11-26 00:55:55,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928009547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:56,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827217425] [2022-11-26 00:55:56,096 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-26 00:55:56,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:56,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:56,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:56,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:55:56,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,226 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:56,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:56,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:55:56,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:55:56,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:56,269 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 15 treesize of output 1 [2022-11-26 00:55:56,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:56,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,287 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 [2022-11-26 00:55:56,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:55:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,303 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 [2022-11-26 00:55:56,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:56,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,375 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:55:56,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:55:56,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,418 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:55:56,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:55:56,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,495 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:55:56,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:55:56,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,572 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:55:56,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:55:56,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:56,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:55:56,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,745 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:56,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:56,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:56,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:55:56,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:55:56,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,898 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 15 treesize of output 15 [2022-11-26 00:55:56,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,927 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 15 treesize of output 15 [2022-11-26 00:55:56,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:56,995 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:56,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:55:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:57,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:55:57,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:57,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,149 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:57,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:55:57,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:55:57,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:55:57,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,356 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:57,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:57,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:57,484 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:55:57,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:55:57,721 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-26 00:55:57,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-26 00:55:58,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,189 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:55:58,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:55:58,209 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:55:58,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:55:58,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:55:58,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:58,239 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 15 treesize of output 1 [2022-11-26 00:55:58,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:55:58,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,262 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 [2022-11-26 00:55:58,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:55:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,280 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 [2022-11-26 00:55:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:55:58,327 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:55:58,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:55:58,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:55:58,367 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:55:58,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:55:58,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:58,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:55:58,420 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:55:58,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:55:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:55:58,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:55:58,447 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:55:58,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:55:58,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:55:58,469 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:01,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4623#(and (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |ULTIMATE.start_create_sll_~#list~0#1.base|) 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (< (select |#length| |ULTIMATE.start_create_sll_~pp1#1.base|) (+ |ULTIMATE.start_create_sll_~pp1#1.offset| 4)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_create_sll_~#list~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:56:01,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:01,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:56:01,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2022-11-26 00:56:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413198464] [2022-11-26 00:56:01,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:01,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-26 00:56:01,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-26 00:56:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=821, Unknown=3, NotChecked=180, Total=1122 [2022-11-26 00:56:01,741 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 18 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:56:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:02,748 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2022-11-26 00:56:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:56:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2022-11-26 00:56:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:02,750 INFO L225 Difference]: With dead ends: 182 [2022-11-26 00:56:02,750 INFO L226 Difference]: Without dead ends: 182 [2022-11-26 00:56:02,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=135, Invalid=930, Unknown=3, NotChecked=192, Total=1260 [2022-11-26 00:56:02,751 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 297 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 561 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 331 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 997 Invalid, 0 Unknown, 561 Unchecked, 0.9s Time] [2022-11-26 00:56:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-26 00:56:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2022-11-26 00:56:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 89 states have (on average 1.8764044943820224) internal successors, (167), 158 states have internal predecessors, (167), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:56:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2022-11-26 00:56:02,759 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 35 [2022-11-26 00:56:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:02,760 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2022-11-26 00:56:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:56:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2022-11-26 00:56:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 00:56:02,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:02,765 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:02,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:02,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492665, now seen corresponding path program 1 times [2022-11-26 00:56:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225659110] [2022-11-26 00:56:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:56:03,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225659110] [2022-11-26 00:56:03,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225659110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:03,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180872450] [2022-11-26 00:56:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:03,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:03,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:03,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:56:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:03,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-26 00:56:03,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:03,795 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-26 00:56:03,796 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 4 case distinctions, treesize of input 35 treesize of output 34 [2022-11-26 00:56:03,829 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base|) 0) (exists ((v_ArrVal_809 Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_809))) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:56:03,889 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:56:03,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:56:03,913 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_810 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_810))) is different from true [2022-11-26 00:56:03,920 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_810 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_~node~0#1.base| v_ArrVal_810))) is different from true [2022-11-26 00:56:03,966 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:56:03,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:04,009 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_811 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_811))) is different from true [2022-11-26 00:56:04,023 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_811 Int)) (= |c_#valid| (store |c_old(#valid)| |c_chain_node_~node~0#1.base| v_ArrVal_811))) is different from true [2022-11-26 00:56:04,072 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:56:04,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:04,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 16 not checked. [2022-11-26 00:56:04,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:04,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180872450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:04,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [498726669] [2022-11-26 00:56:04,646 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-26 00:56:04,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:04,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:04,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:04,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:56:04,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,777 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:04,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:04,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:04,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:04,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:04,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:04,817 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 15 treesize of output 1 [2022-11-26 00:56:04,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,828 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 [2022-11-26 00:56:04,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,842 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 [2022-11-26 00:56:04,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,892 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:04,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,931 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:04,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:04,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:04,988 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:56:04,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:56:05,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,070 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:56:05,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:56:05,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:05,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:05,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:05,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,236 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:05,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:05,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:05,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:05,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:05,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,380 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 15 treesize of output 15 [2022-11-26 00:56:05,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,409 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 15 treesize of output 15 [2022-11-26 00:56:05,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,481 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:05,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,644 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:05,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:05,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,800 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 15 treesize of output 15 [2022-11-26 00:56:05,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:05,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,821 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 15 treesize of output 15 [2022-11-26 00:56:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,892 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:05,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:05,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:05,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:05,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,046 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:06,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:06,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:06,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:06,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:06,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,339 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:06,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:06,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,427 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:06,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,512 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:06,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:06,534 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:56:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:06,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:06,556 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 15 treesize of output 1 [2022-11-26 00:56:06,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:06,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:06,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,582 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 [2022-11-26 00:56:06,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,591 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 [2022-11-26 00:56:06,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:06,649 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:06,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:06,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:06,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:06,698 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:06,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:06,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:06,741 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:56:06,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:56:06,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:06,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:06,779 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:56:06,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:56:06,787 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:11,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5217#(and (not (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1)) (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_31| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) 0) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) 0) |ULTIMATE.start_create_sll_#res#1.base|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_31| 0)) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_31|) 0) |ULTIMATE.start_create_sll_#res#1.offset|))) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:56:11,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:11,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:56:11,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-11-26 00:56:11,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745415713] [2022-11-26 00:56:11,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:11,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:56:11,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:11,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:56:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=985, Unknown=5, NotChecked=340, Total=1482 [2022-11-26 00:56:11,352 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand has 17 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:56:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:12,474 INFO L93 Difference]: Finished difference Result 175 states and 197 transitions. [2022-11-26 00:56:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:56:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2022-11-26 00:56:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:12,476 INFO L225 Difference]: With dead ends: 175 [2022-11-26 00:56:12,476 INFO L226 Difference]: Without dead ends: 175 [2022-11-26 00:56:12,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=189, Invalid=1232, Unknown=5, NotChecked=380, Total=1806 [2022-11-26 00:56:12,477 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 203 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 44 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 916 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:12,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 517 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1069 Invalid, 29 Unknown, 916 Unchecked, 0.9s Time] [2022-11-26 00:56:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-26 00:56:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2022-11-26 00:56:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 89 states have (on average 1.797752808988764) internal successors, (160), 151 states have internal predecessors, (160), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:56:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2022-11-26 00:56:12,482 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 38 [2022-11-26 00:56:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:12,482 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2022-11-26 00:56:12,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:56:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2022-11-26 00:56:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 00:56:12,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:12,492 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:12,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:56:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:12,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:12,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492664, now seen corresponding path program 1 times [2022-11-26 00:56:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128161577] [2022-11-26 00:56:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:56:13,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:13,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128161577] [2022-11-26 00:56:13,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128161577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:56:13,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:56:13,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:56:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531808809] [2022-11-26 00:56:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:56:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:56:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:56:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:56:13,084 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:56:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:13,634 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2022-11-26 00:56:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:56:13,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-26 00:56:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:13,635 INFO L225 Difference]: With dead ends: 183 [2022-11-26 00:56:13,636 INFO L226 Difference]: Without dead ends: 183 [2022-11-26 00:56:13,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:56:13,636 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 309 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:13,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 119 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:56:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-26 00:56:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2022-11-26 00:56:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 94 states have (on average 1.702127659574468) internal successors, (160), 150 states have internal predecessors, (160), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:56:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2022-11-26 00:56:13,668 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 38 [2022-11-26 00:56:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:13,669 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2022-11-26 00:56:13,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:56:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2022-11-26 00:56:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-26 00:56:13,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:13,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:13,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:56:13,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -324632138, now seen corresponding path program 1 times [2022-11-26 00:56:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:13,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277658162] [2022-11-26 00:56:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:56:14,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277658162] [2022-11-26 00:56:14,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277658162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657947616] [2022-11-26 00:56:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:14,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:14,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:14,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:56:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:14,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-26 00:56:14,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:14,535 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-26 00:56:14,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 57 treesize of output 65 [2022-11-26 00:56:14,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:56:14,576 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_1127 Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1127))) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:56:14,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:14,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:56:14,658 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1128 Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1128))))) is different from true [2022-11-26 00:56:14,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:14,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:56:14,736 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1129 Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1129))))) is different from true [2022-11-26 00:56:14,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:14,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 18 not checked. [2022-11-26 00:56:14,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:14,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657947616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:14,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989869444] [2022-11-26 00:56:14,941 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-26 00:56:14,941 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:14,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:14,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:14,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:14,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:56:15,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,066 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:15,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:15,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:15,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:15,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:15,099 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 15 treesize of output 1 [2022-11-26 00:56:15,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,116 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 [2022-11-26 00:56:15,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:15,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,129 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 [2022-11-26 00:56:15,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,175 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:15,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,217 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:15,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:15,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:15,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:15,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,310 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:56:15,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:56:15,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,379 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:56:15,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:56:15,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:15,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:15,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,528 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:15,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:15,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:15,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:15,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,685 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 15 treesize of output 15 [2022-11-26 00:56:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,696 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 15 treesize of output 15 [2022-11-26 00:56:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,767 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:15,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:15,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:15,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:15,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:15,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,938 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:15,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:15,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:15,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,095 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 15 treesize of output 15 [2022-11-26 00:56:16,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,109 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 15 treesize of output 15 [2022-11-26 00:56:16,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,200 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:16,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:16,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:16,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:16,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,353 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:16,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:16,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:16,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:16,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:16,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,664 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:16,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:16,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,784 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:16,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:16,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,871 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:16,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:16,891 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:56:16,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:16,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:16,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:16,918 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 15 treesize of output 1 [2022-11-26 00:56:16,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:16,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,945 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 [2022-11-26 00:56:16,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,953 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 [2022-11-26 00:56:16,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:16,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:17,007 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:17,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:17,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:17,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:17,045 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:17,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:17,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:17,082 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:56:17,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:56:17,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:17,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:17,122 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:56:17,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:56:17,128 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:21,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6095#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~#p2~0#1.base|) 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_33| Int)) (and (= |ULTIMATE.start_create_sll_#res#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|)) (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_33| 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_main_#t~mem21#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem21#1.offset|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:56:21,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:21,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:56:21,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-11-26 00:56:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500345745] [2022-11-26 00:56:21,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:56:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:56:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=822, Unknown=3, NotChecked=180, Total=1122 [2022-11-26 00:56:21,879 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-26 00:56:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:22,578 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2022-11-26 00:56:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:56:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-11-26 00:56:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:22,580 INFO L225 Difference]: With dead ends: 168 [2022-11-26 00:56:22,580 INFO L226 Difference]: Without dead ends: 168 [2022-11-26 00:56:22,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=132, Invalid=933, Unknown=3, NotChecked=192, Total=1260 [2022-11-26 00:56:22,582 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 190 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:22,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 275 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 735 Invalid, 0 Unknown, 501 Unchecked, 0.6s Time] [2022-11-26 00:56:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-26 00:56:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2022-11-26 00:56:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.627659574468085) internal successors, (153), 143 states have internal predecessors, (153), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:56:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 181 transitions. [2022-11-26 00:56:22,587 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 181 transitions. Word has length 39 [2022-11-26 00:56:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:22,587 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 181 transitions. [2022-11-26 00:56:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-26 00:56:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 181 transitions. [2022-11-26 00:56:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-26 00:56:22,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:22,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:22,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:56:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-26 00:56:22,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -324632137, now seen corresponding path program 1 times [2022-11-26 00:56:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259674295] [2022-11-26 00:56:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:23,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:23,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259674295] [2022-11-26 00:56:23,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259674295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:23,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161244669] [2022-11-26 00:56:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:23,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:23,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:56:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-26 00:56:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:23,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:56:23,750 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_1334 Int)) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1334) |c_#length|)) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:56:23,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:23,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:23,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:56:23,845 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1335 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1335))))) is different from true [2022-11-26 00:56:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:23,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-26 00:56:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-26 00:56:23,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:24,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161244669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502865786] [2022-11-26 00:56:24,090 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-26 00:56:24,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:24,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:24,091 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:24,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:24,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:56:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,215 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:24,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:24,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:24,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:24,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:24,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:24,283 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 15 treesize of output 1 [2022-11-26 00:56:24,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,294 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 [2022-11-26 00:56:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,303 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 [2022-11-26 00:56:24,309 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 19 treesize of output 1 [2022-11-26 00:56:24,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:24,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,364 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:24,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:24,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,408 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:24,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:24,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,478 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:56:24,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:56:24,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,551 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:56:24,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:56:24,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:24,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:24,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,718 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:24,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:24,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:24,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:24,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:24,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:24,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,877 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 15 treesize of output 15 [2022-11-26 00:56:24,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,894 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 15 treesize of output 15 [2022-11-26 00:56:24,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:24,966 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:24,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:25,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,120 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:25,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,277 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 15 treesize of output 15 [2022-11-26 00:56:25,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:25,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,303 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 15 treesize of output 15 [2022-11-26 00:56:25,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,374 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:25,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:25,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,546 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:25,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:25,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:25,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:25,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,852 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:25,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,921 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:25,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:25,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,008 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:26,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:26,027 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:56:26,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:26,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:26,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:26,057 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 15 treesize of output 1 [2022-11-26 00:56:26,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:26,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:26,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,082 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 [2022-11-26 00:56:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,091 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 [2022-11-26 00:56:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:26,135 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:26,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:26,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:26,179 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:26,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:26,221 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:56:26,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:56:26,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:26,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:26,254 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:56:26,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:56:26,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:31,224 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6597#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_34| Int)) (and (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) (= |ULTIMATE.start_create_sll_#res#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) 0)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_34| 0)) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_34|) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_main_#t~mem21#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (< (select |#length| |ULTIMATE.start_main_~#p2~0#1.base|) (+ |ULTIMATE.start_main_~#p2~0#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem21#1.offset|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:56:31,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:31,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:56:31,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-11-26 00:56:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952044309] [2022-11-26 00:56:31,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:31,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:56:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:56:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1045, Unknown=2, NotChecked=134, Total=1332 [2022-11-26 00:56:31,227 INFO L87 Difference]: Start difference. First operand 158 states and 181 transitions. Second operand has 17 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:56:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:32,105 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2022-11-26 00:56:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:56:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-11-26 00:56:32,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:32,108 INFO L225 Difference]: With dead ends: 163 [2022-11-26 00:56:32,108 INFO L226 Difference]: Without dead ends: 163 [2022-11-26 00:56:32,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=181, Invalid=1231, Unknown=2, NotChecked=146, Total=1560 [2022-11-26 00:56:32,109 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 556 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:32,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 188 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 867 Invalid, 0 Unknown, 350 Unchecked, 0.7s Time] [2022-11-26 00:56:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-26 00:56:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2022-11-26 00:56:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.553191489361702) internal successors, (146), 136 states have internal predecessors, (146), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:56:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 174 transitions. [2022-11-26 00:56:32,114 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 174 transitions. Word has length 39 [2022-11-26 00:56:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 174 transitions. [2022-11-26 00:56:32,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:56:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 174 transitions. [2022-11-26 00:56:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-26 00:56:32,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:32,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:32,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-26 00:56:32,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2086695555, now seen corresponding path program 1 times [2022-11-26 00:56:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:32,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559153687] [2022-11-26 00:56:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:32,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:56:33,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559153687] [2022-11-26 00:56:33,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559153687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899201921] [2022-11-26 00:56:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:33,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:33,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:33,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:56:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:34,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-26 00:56:34,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:34,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:34,615 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:56:34,615 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 33 treesize of output 24 [2022-11-26 00:56:34,670 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:56:34,670 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 29 treesize of output 13 [2022-11-26 00:56:34,882 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1546 (Array Int Int)) (v_ArrVal_1545 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1545) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1546) |c_#memory_$Pointer$.base|))) is different from true [2022-11-26 00:56:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:34,927 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:56:34,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 52 [2022-11-26 00:56:34,953 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 23 treesize of output 17 [2022-11-26 00:56:35,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:35,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2022-11-26 00:56:35,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:56:35,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 45 [2022-11-26 00:56:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-26 00:56:35,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:35,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:56:35,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899201921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671828463] [2022-11-26 00:56:35,396 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-26 00:56:35,396 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:35,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:35,396 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:35,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:35,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:56:35,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,524 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:35,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:35,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:35,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:35,553 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 15 treesize of output 1 [2022-11-26 00:56:35,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:35,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:35,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:35,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,579 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 [2022-11-26 00:56:35,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,587 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 [2022-11-26 00:56:35,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:35,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,640 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:35,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,680 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:35,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:35,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,758 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:56:35,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:56:35,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,820 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:56:35,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:56:35,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:35,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:35,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,962 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:35,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:35,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:35,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:36,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:36,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,114 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 15 treesize of output 15 [2022-11-26 00:56:36,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:36,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,141 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 15 treesize of output 15 [2022-11-26 00:56:36,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,207 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:36,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:36,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:36,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:36,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,343 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:36,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:36,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:36,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:36,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,518 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 15 treesize of output 15 [2022-11-26 00:56:36,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,530 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 15 treesize of output 15 [2022-11-26 00:56:36,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,595 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:36,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:36,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:36,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,737 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:36,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:36,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:36,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:36,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:36,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:37,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,059 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:56:37,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:56:37,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,131 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:37,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:37,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,197 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:37,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:37,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,287 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:37,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:37,303 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:56:37,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:37,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:37,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:37,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:37,337 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 15 treesize of output 1 [2022-11-26 00:56:37,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,356 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 [2022-11-26 00:56:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,365 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 [2022-11-26 00:56:37,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:37,414 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:37,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:37,456 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:37,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:37,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:37,498 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:56:37,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:56:37,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:37,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:37,533 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:56:37,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:56:37,543 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:56:37,594 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-26 00:56:37,608 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:43,983 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7134#(and (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49| 2)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|) 0) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_55| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_49|)))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_38| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_38|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_38|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_38|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_38| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_38|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_38|) 0))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:56:43,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:43,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:56:43,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2022-11-26 00:56:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346020480] [2022-11-26 00:56:43,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:43,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:56:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:56:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2725, Unknown=38, NotChecked=106, Total=3080 [2022-11-26 00:56:43,986 INFO L87 Difference]: Start difference. First operand 151 states and 174 transitions. Second operand has 32 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 29 states have internal predecessors, (56), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:56:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:46,812 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2022-11-26 00:56:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:56:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 29 states have internal predecessors, (56), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2022-11-26 00:56:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:46,814 INFO L225 Difference]: With dead ends: 241 [2022-11-26 00:56:46,815 INFO L226 Difference]: Without dead ends: 241 [2022-11-26 00:56:46,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=374, Invalid=4701, Unknown=41, NotChecked=140, Total=5256 [2022-11-26 00:56:46,817 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 860 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 128 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:46,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 841 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2014 Invalid, 4 Unknown, 198 Unchecked, 1.6s Time] [2022-11-26 00:56:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-26 00:56:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 162. [2022-11-26 00:56:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.5673076923076923) internal successors, (163), 146 states have internal predecessors, (163), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:56:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 191 transitions. [2022-11-26 00:56:46,823 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 191 transitions. Word has length 44 [2022-11-26 00:56:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:46,824 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 191 transitions. [2022-11-26 00:56:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 29 states have internal predecessors, (56), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:56:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 191 transitions. [2022-11-26 00:56:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:56:46,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:46,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:46,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-26 00:56:47,032 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:56:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -446223091, now seen corresponding path program 1 times [2022-11-26 00:56:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:47,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430820101] [2022-11-26 00:56:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:50,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:50,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430820101] [2022-11-26 00:56:50,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430820101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:50,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018772146] [2022-11-26 00:56:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:50,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:50,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:56:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-26 00:56:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:50,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:56:50,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:50,759 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:56:50,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-26 00:56:50,836 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:56:50,836 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 20 treesize of output 8 [2022-11-26 00:56:51,086 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1767 (Array Int Int)) (v_ArrVal_1766 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1766) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1767)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:56:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:51,133 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:56:51,133 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 3 case distinctions, treesize of input 29 treesize of output 45 [2022-11-26 00:56:51,147 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 6 treesize of output 4 [2022-11-26 00:56:51,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-26 00:56:51,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-26 00:56:51,595 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_1772 (Array Int Int)) (v_ArrVal_1771 (Array Int Int)) (v_ArrVal_1770 (Array Int Int)) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_1770) |chain_node_~node~0#1.base| v_ArrVal_1771) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1772) |c_#memory_$Pointer$.base|))) is different from true [2022-11-26 00:56:51,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:51,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:51,645 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-26 00:56:51,646 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 3 case distinctions, treesize of input 25 treesize of output 46 [2022-11-26 00:56:51,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:51,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-26 00:56:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-26 00:56:51,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:51,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:56:52,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018772146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338414548] [2022-11-26 00:56:52,243 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-26 00:56:52,244 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:52,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:52,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:52,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:56:52,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,384 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:52,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:52,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:52,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:52,417 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 15 treesize of output 1 [2022-11-26 00:56:52,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:52,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:52,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,446 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 [2022-11-26 00:56:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,454 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 [2022-11-26 00:56:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,506 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:52,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:52,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,560 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:56:52,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:56:52,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:52,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,635 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:56:52,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:56:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,710 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:56:52,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:56:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:52,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:52,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:52,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,885 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:52,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:52,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:56:52,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:52,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:56:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,025 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 15 treesize of output 15 [2022-11-26 00:56:53,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,049 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 15 treesize of output 15 [2022-11-26 00:56:53,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,110 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:53,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:53,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:53,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,259 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:53,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:53,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:53,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:53,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,416 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 15 treesize of output 15 [2022-11-26 00:56:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,432 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 15 treesize of output 15 [2022-11-26 00:56:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,506 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:53,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:53,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,659 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:53,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:53,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:56:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:56:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:56:53,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,004 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:56:54,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:56:54,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,087 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:54,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,171 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:56:54,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:56:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,260 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:56:54,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:56:54,280 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:56:54,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:56:54,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:56:54,300 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 15 treesize of output 1 [2022-11-26 00:56:54,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:54,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:56:54,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,322 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 [2022-11-26 00:56:54,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:56:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,337 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 [2022-11-26 00:56:54,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:54,383 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:54,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:54,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:54,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:54,422 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:56:54,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:56:54,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:54,462 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:56:54,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:56:54,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:56:54,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:56:54,488 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:56:54,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:56:54,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:56:54,510 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:56:54,617 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-26 00:56:54,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:02,238 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7816#(and (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) 1))) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|) 0) 0) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| Int)) (and (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) 0) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_67|) 1))) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_60|)))) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_42| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_42|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_42|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_42|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_42|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_42|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_42| 0)))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:02,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:02,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:57:02,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-11-26 00:57:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583459181] [2022-11-26 00:57:02,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-26 00:57:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-26 00:57:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3995, Unknown=30, NotChecked=258, Total=4556 [2022-11-26 00:57:02,244 INFO L87 Difference]: Start difference. First operand 162 states and 191 transitions. Second operand has 42 states, 30 states have (on average 2.033333333333333) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:57:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:06,991 INFO L93 Difference]: Finished difference Result 240 states and 276 transitions. [2022-11-26 00:57:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 00:57:06,991 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 30 states have (on average 2.033333333333333) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-26 00:57:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:06,993 INFO L225 Difference]: With dead ends: 240 [2022-11-26 00:57:06,993 INFO L226 Difference]: Without dead ends: 240 [2022-11-26 00:57:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=468, Invalid=6149, Unknown=33, NotChecked=322, Total=6972 [2022-11-26 00:57:06,995 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 712 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 141 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:06,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1099 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2907 Invalid, 6 Unknown, 512 Unchecked, 3.2s Time] [2022-11-26 00:57:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-26 00:57:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 162. [2022-11-26 00:57:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 146 states have internal predecessors, (162), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:57:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2022-11-26 00:57:07,002 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 46 [2022-11-26 00:57:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:07,003 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2022-11-26 00:57:07,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 30 states have (on average 2.033333333333333) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:57:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2022-11-26 00:57:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:57:07,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:07,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:07,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:07,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-26 00:57:07,211 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:57:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -446234027, now seen corresponding path program 1 times [2022-11-26 00:57:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:07,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049900201] [2022-11-26 00:57:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:09,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:09,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049900201] [2022-11-26 00:57:09,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049900201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679610508] [2022-11-26 00:57:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:09,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:09,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:09,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:09,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:57:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:09,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-26 00:57:09,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:10,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:10,255 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-26 00:57:10,255 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 15 treesize of output 15 [2022-11-26 00:57:10,436 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:57:10,436 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 33 treesize of output 24 [2022-11-26 00:57:10,495 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:57:10,495 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 29 treesize of output 13 [2022-11-26 00:57:10,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:10,944 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:57:10,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 52 [2022-11-26 00:57:10,963 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-26 00:57:10,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:57:10,982 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 21 treesize of output 15 [2022-11-26 00:57:10,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 00:57:11,190 INFO L321 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2022-11-26 00:57:11,191 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 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-26 00:57:11,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:57:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:17,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:18,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679610508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1638521696] [2022-11-26 00:57:18,231 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-26 00:57:18,231 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:18,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:18,232 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:18,232 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:18,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:57:18,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,414 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:18,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:18,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:18,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:18,454 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 15 treesize of output 1 [2022-11-26 00:57:18,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:18,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:18,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,484 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 [2022-11-26 00:57:18,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:57:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,504 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 [2022-11-26 00:57:18,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,573 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:18,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:18,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:18,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,644 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:18,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:18,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,746 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:57:18,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:57:18,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:18,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,834 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:57:18,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:57:18,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:18,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:18,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,041 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:19,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:19,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:19,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,217 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 15 treesize of output 15 [2022-11-26 00:57:19,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:19,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,250 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 15 treesize of output 15 [2022-11-26 00:57:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,335 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:19,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:19,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:19,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,516 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:19,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:19,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:19,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:19,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:19,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,719 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 15 treesize of output 15 [2022-11-26 00:57:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,735 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 15 treesize of output 15 [2022-11-26 00:57:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,835 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:19,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:19,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:19,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:19,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:19,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:20,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,047 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:20,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:20,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:20,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:20,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:20,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:20,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:20,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,377 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:57:20,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:57:20,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,476 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:20,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:20,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,572 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:20,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:20,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,691 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:20,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:20,715 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:57:20,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:20,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:20,749 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 15 treesize of output 1 [2022-11-26 00:57:20,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:20,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,778 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 [2022-11-26 00:57:20,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,789 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 [2022-11-26 00:57:20,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:57:20,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:20,856 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:57:20,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:57:20,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:20,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:20,914 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:57:20,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:57:20,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:20,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:20,975 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:57:20,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:57:20,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:20,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:21,011 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:57:21,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:57:21,022 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:57:21,141 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:29,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8496#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (= check_seq_next_~beg.offset |check_seq_next_#in~beg.offset|) (= check_seq_next_~beg.base |check_seq_next_#in~beg.base|) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|) 0) |check_seq_next_#in~end.offset|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|) 0) |check_seq_next_#in~beg.offset|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|) 0) |check_seq_next_#in~beg.base|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|) 0) |check_seq_next_#in~end.base|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_79|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_70| 0)))) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_46| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_46|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_46|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_46|) 0) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_46|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_46|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_46| 0)))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:29,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:29,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:57:29,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 40 [2022-11-26 00:57:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693243659] [2022-11-26 00:57:29,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-26 00:57:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-26 00:57:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4259, Unknown=32, NotChecked=0, Total=4556 [2022-11-26 00:57:29,256 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand has 41 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 37 states have internal predecessors, (73), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:57:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:36,834 INFO L93 Difference]: Finished difference Result 227 states and 262 transitions. [2022-11-26 00:57:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:57:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 37 states have internal predecessors, (73), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-26 00:57:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:36,835 INFO L225 Difference]: With dead ends: 227 [2022-11-26 00:57:36,835 INFO L226 Difference]: Without dead ends: 227 [2022-11-26 00:57:36,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2220 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=402, Invalid=6037, Unknown=41, NotChecked=0, Total=6480 [2022-11-26 00:57:36,837 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 399 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 87 mSolverCounterUnsat, 131 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 131 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:36,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1058 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3251 Invalid, 131 Unknown, 0 Unchecked, 3.9s Time] [2022-11-26 00:57:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-26 00:57:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 162. [2022-11-26 00:57:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.5480769230769231) internal successors, (161), 146 states have internal predecessors, (161), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:57:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2022-11-26 00:57:36,844 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 46 [2022-11-26 00:57:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:36,844 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2022-11-26 00:57:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 37 states have internal predecessors, (73), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:57:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2022-11-26 00:57:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:57:36,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:36,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:36,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-26 00:57:37,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:37,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:57:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -446234026, now seen corresponding path program 1 times [2022-11-26 00:57:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923410648] [2022-11-26 00:57:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:37,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:57:39,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:39,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923410648] [2022-11-26 00:57:39,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923410648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:39,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210462182] [2022-11-26 00:57:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:39,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:39,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:39,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:39,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:57:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:40,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-26 00:57:40,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:40,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:40,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:40,538 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:57:40,539 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 23 treesize of output 18 [2022-11-26 00:57:40,562 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:57:40,562 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 34 treesize of output 25 [2022-11-26 00:57:40,680 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:57:40,680 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 30 treesize of output 14 [2022-11-26 00:57:40,687 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:57:40,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 00:57:41,060 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_2223 (Array Int Int)) (v_ArrVal_2222 (Array Int Int)) (v_ArrVal_2221 (Array Int Int)) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2215 Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2221) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2222)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2220) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2223)) (= (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_2215) |c_#length|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 00:57:41,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:41,115 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:57:41,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-26 00:57:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:41,157 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:57:41,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-26 00:57:41,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:41,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:57:41,181 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-26 00:57:41,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 00:57:41,200 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 21 treesize of output 15 [2022-11-26 00:57:41,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 00:57:41,240 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 13 treesize of output 9 [2022-11-26 00:57:41,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:41,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:57:41,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:57:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-26 00:57:41,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:41,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:57:42,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210462182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [773278111] [2022-11-26 00:57:42,231 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-26 00:57:42,232 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:42,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:42,232 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:42,232 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:42,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:57:42,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,369 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:42,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:42,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:42,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:42,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:42,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:42,412 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 15 treesize of output 1 [2022-11-26 00:57:42,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,424 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 [2022-11-26 00:57:42,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:57:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,440 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 [2022-11-26 00:57:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,489 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:42,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:42,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,539 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:42,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:42,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,633 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:57:42,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:57:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,691 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:57:42,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:57:42,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:42,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:42,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:42,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,847 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:42,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:42,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:42,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:42,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:42,993 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 15 treesize of output 15 [2022-11-26 00:57:43,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,027 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 15 treesize of output 15 [2022-11-26 00:57:43,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,109 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:43,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:43,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:43,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:43,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,276 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:43,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:43,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:43,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,427 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 15 treesize of output 15 [2022-11-26 00:57:43,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:43,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,456 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 15 treesize of output 15 [2022-11-26 00:57:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,527 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:43,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:43,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:43,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:43,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,671 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:43,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:43,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,948 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:57:43,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:57:43,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,013 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:44,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:44,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,078 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:44,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,199 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:44,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:44,218 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:57:44,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:44,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:44,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:44,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:44,251 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 15 treesize of output 1 [2022-11-26 00:57:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,265 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 [2022-11-26 00:57:44,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:57:44,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,279 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 [2022-11-26 00:57:44,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:44,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:44,332 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:57:44,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:57:44,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:44,370 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:57:44,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:57:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:44,410 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:57:44,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:57:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:44,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:57:44,438 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:57:44,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:57:44,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:44,451 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:57:44,561 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:52,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9154#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91| 2)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|) 0) |check_seq_next_#in~end.base|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|) 0) |check_seq_next_#in~end.offset|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|) 0) |check_seq_next_#in~beg.offset|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|) (= |check_seq_next_#in~beg.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_80|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_91| 0)))) (= check_seq_next_~beg.offset |check_seq_next_#in~beg.offset|) (= check_seq_next_~beg.base |check_seq_next_#in~beg.base|) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_50| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_50| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_50|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_50|) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_50|) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_50|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_50|)))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (or (not (<= (+ check_seq_next_~beg.offset 4) (select |#length| check_seq_next_~beg.base))) (not (<= 0 check_seq_next_~beg.offset))) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:52,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:52,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:57:52,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 32 [2022-11-26 00:57:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053341644] [2022-11-26 00:57:52,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:52,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-26 00:57:52,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-26 00:57:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3529, Unknown=4, NotChecked=120, Total=3906 [2022-11-26 00:57:52,395 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 33 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:57:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:57,304 INFO L93 Difference]: Finished difference Result 258 states and 301 transitions. [2022-11-26 00:57:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:57:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2022-11-26 00:57:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:57,309 INFO L225 Difference]: With dead ends: 258 [2022-11-26 00:57:57,309 INFO L226 Difference]: Without dead ends: 258 [2022-11-26 00:57:57,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=389, Invalid=5305, Unknown=10, NotChecked=148, Total=5852 [2022-11-26 00:57:57,311 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 511 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 93 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:57,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 837 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2677 Invalid, 6 Unknown, 257 Unchecked, 3.2s Time] [2022-11-26 00:57:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-26 00:57:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 175. [2022-11-26 00:57:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.5304347826086957) internal successors, (176), 158 states have internal predecessors, (176), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:57:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2022-11-26 00:57:57,319 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 46 [2022-11-26 00:57:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:57,320 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2022-11-26 00:57:57,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-26 00:57:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2022-11-26 00:57:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-26 00:57:57,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:57,321 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:57,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:57,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:57:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1158653529, now seen corresponding path program 1 times [2022-11-26 00:57:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315897999] [2022-11-26 00:57:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:57:58,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315897999] [2022-11-26 00:57:58,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315897999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296784943] [2022-11-26 00:57:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:58,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:58,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:58,168 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:57:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:58,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-26 00:57:58,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:58,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:58,532 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-26 00:57:58,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-26 00:57:58,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:57:58,577 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 9 treesize of output 7 [2022-11-26 00:57:58,584 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_2505 Int)) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_2505) |c_#length|)))) is different from true [2022-11-26 00:57:58,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:58,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:57:58,668 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 9 treesize of output 7 [2022-11-26 00:57:58,675 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_2506 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_2506))))) is different from true [2022-11-26 00:57:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:58,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:57:58,762 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 9 treesize of output 7 [2022-11-26 00:57:58,770 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_2507 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_2507))) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-26 00:57:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:58,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:57:58,837 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 9 treesize of output 7 [2022-11-26 00:57:58,848 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_2508 Int)) (= |c_#length| (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_2508))))) is different from true [2022-11-26 00:57:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:58,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:57:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 36 not checked. [2022-11-26 00:57:58,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:59,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296784943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1240505887] [2022-11-26 00:57:59,133 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-26 00:57:59,133 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:59,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:59,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:59,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:59,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:57:59,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,253 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:59,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:59,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:57:59,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:57:59,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:59,285 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 15 treesize of output 1 [2022-11-26 00:57:59,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:57:59,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,301 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 [2022-11-26 00:57:59,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,309 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 [2022-11-26 00:57:59,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:57:59,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:59,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,365 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:59,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:59,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,405 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:57:59,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:57:59,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:59,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,484 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:57:59,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:57:59,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,542 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:57:59,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:57:59,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:59,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:59,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,698 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:57:59,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:57:59,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:57:59,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:59,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:57:59,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,823 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 15 treesize of output 15 [2022-11-26 00:57:59,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,837 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 15 treesize of output 15 [2022-11-26 00:57:59,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:57:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,912 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:57:59,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:57:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:57:59,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:57:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:57:59,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:57:59,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,069 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:00,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:00,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:00,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:00,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:00,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,249 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 15 treesize of output 15 [2022-11-26 00:58:00,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,263 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 15 treesize of output 15 [2022-11-26 00:58:00,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,337 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:00,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:00,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:00,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,470 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:00,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:00,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:00,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,634 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:00,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:00,698 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:00,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:00,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:01,016 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-26 00:58:01,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-26 00:58:01,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,436 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:01,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,542 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:01,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:01,560 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-26 00:58:01,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:01,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:01,681 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 15 treesize of output 1 [2022-11-26 00:58:01,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:01,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,820 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 [2022-11-26 00:58:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,852 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 [2022-11-26 00:58:01,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:58:01,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:01,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:02,011 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:02,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:02,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:02,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:02,084 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:02,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:02,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:02,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:02,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:02,306 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:58:02,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:58:02,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:02,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:02,369 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:58:02,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:58:02,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:58:08,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9820#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_52| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) 0) |ULTIMATE.start_create_sll_#res#1.base|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_52| 0)) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_52|) 0) |ULTIMATE.start_create_sll_#res#1.offset|))) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (< (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|) (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4)) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:58:08,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:58:08,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:58:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-26 00:58:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562959313] [2022-11-26 00:58:08,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:58:08,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-26 00:58:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-26 00:58:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=999, Unknown=4, NotChecked=268, Total=1406 [2022-11-26 00:58:08,185 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 19 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 4 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-26 00:58:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:58:09,190 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2022-11-26 00:58:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:58:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 4 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 48 [2022-11-26 00:58:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:58:09,192 INFO L225 Difference]: With dead ends: 185 [2022-11-26 00:58:09,192 INFO L226 Difference]: Without dead ends: 185 [2022-11-26 00:58:09,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=188, Invalid=1306, Unknown=4, NotChecked=308, Total=1806 [2022-11-26 00:58:09,194 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 389 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 652 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:58:09,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 242 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1061 Invalid, 0 Unknown, 652 Unchecked, 0.8s Time] [2022-11-26 00:58:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-26 00:58:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2022-11-26 00:58:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 115 states have (on average 1.5217391304347827) internal successors, (175), 157 states have internal predecessors, (175), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:58:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2022-11-26 00:58:09,212 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 48 [2022-11-26 00:58:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:09,212 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2022-11-26 00:58:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 4 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-26 00:58:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2022-11-26 00:58:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:58:09,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:09,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:58:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:58:09,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-26 00:58:09,423 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:58:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash 362497408, now seen corresponding path program 1 times [2022-11-26 00:58:09,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:09,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048033837] [2022-11-26 00:58:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:13,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048033837] [2022-11-26 00:58:13,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048033837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:58:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247251093] [2022-11-26 00:58:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:13,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:58:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:58:13,534 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:58:13,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:58:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:13,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-26 00:58:13,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:58:13,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:14,090 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:58:14,090 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 15 treesize of output 21 [2022-11-26 00:58:14,096 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 6 treesize of output 4 [2022-11-26 00:58:14,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-26 00:58:14,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:14,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:14,827 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 34 treesize of output 29 [2022-11-26 00:58:14,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-26 00:58:14,845 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 12 treesize of output 11 [2022-11-26 00:58:15,171 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-26 00:58:15,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 51 [2022-11-26 00:58:15,205 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:58:15,205 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 23 treesize of output 18 [2022-11-26 00:58:15,596 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2734 (Array Int Int)) (v_ArrVal_2733 (Array Int Int)) (v_ArrVal_2732 (Array Int Int)) (v_ArrVal_2731 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2731) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2734) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2732) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2733)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 00:58:15,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:15,661 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-26 00:58:15,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 79 [2022-11-26 00:58:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:15,700 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:58:15,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-26 00:58:15,721 INFO L321 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2022-11-26 00:58:15,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 20 [2022-11-26 00:58:15,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 00:58:15,742 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 34 treesize of output 26 [2022-11-26 00:58:15,791 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 13 treesize of output 9 [2022-11-26 00:58:16,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:16,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:58:17,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:58:17,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2022-11-26 00:58:17,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,015 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-26 00:58:17,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2022-11-26 00:58:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-26 00:58:17,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:58:17,431 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-26 00:58:17,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 26 [2022-11-26 00:58:17,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247251093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:58:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507768694] [2022-11-26 00:58:17,790 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-26 00:58:17,790 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:58:17,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:58:17,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:58:17,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:58:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:58:17,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,903 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:17,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:17,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:17,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:17,927 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 15 treesize of output 1 [2022-11-26 00:58:17,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:17,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,947 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 [2022-11-26 00:58:17,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:58:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:17,960 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 [2022-11-26 00:58:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,013 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:58:18,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:58:18,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,065 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:58:18,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:58:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,130 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:58:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:58:18,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,185 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:58:18,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:58:18,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:18,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:58:18,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:18,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:18,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,356 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:18,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:18,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:18,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:18,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:58:18,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,489 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 15 treesize of output 15 [2022-11-26 00:58:18,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,512 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 15 treesize of output 15 [2022-11-26 00:58:18,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,583 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:18,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:18,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:18,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:18,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,725 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:18,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:18,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:18,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:18,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:18,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,874 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 15 treesize of output 15 [2022-11-26 00:58:18,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,886 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 15 treesize of output 15 [2022-11-26 00:58:18,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:18,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:18,966 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:18,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:19,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,110 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:19,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:19,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:19,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:19,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:19,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,385 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:58:19,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:58:19,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,464 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:19,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:19,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,535 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:19,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:19,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,624 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:19,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:19,641 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:58:19,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:19,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:19,662 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 15 treesize of output 1 [2022-11-26 00:58:19,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:19,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:19,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,687 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 [2022-11-26 00:58:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,696 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 [2022-11-26 00:58:19,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:58:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:19,749 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:19,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:19,789 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:19,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:19,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:19,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:19,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:19,843 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:58:19,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:58:19,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:19,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:19,872 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:58:19,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:58:19,880 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:58:20,166 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 103 for LOIs [2022-11-26 00:58:20,285 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:58:31,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10468#(and (or (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| Int)) (and (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 0)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0))))) (<= (+ 4 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0))) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 2)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| Int)) (and (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= (+ 4 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0))) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0) 0)))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| Int)) (and (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 0)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0))))) (<= (+ 4 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0))) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 1) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| Int)) (and (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= (+ 4 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0))) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) 0) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|) 0) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_114|)))) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_102|) 0) 0))))) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_56| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_56| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:58:31,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:58:31,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:58:31,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 54 [2022-11-26 00:58:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760427759] [2022-11-26 00:58:31,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:58:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-26 00:58:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-26 00:58:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=7157, Unknown=19, NotChecked=170, Total=7656 [2022-11-26 00:58:31,206 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 54 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 48 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:58:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:58:39,581 INFO L93 Difference]: Finished difference Result 269 states and 315 transitions. [2022-11-26 00:58:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 00:58:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 48 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-26 00:58:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:58:39,583 INFO L225 Difference]: With dead ends: 269 [2022-11-26 00:58:39,583 INFO L226 Difference]: Without dead ends: 269 [2022-11-26 00:58:39,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3412 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=576, Invalid=11396, Unknown=22, NotChecked=216, Total=12210 [2022-11-26 00:58:39,586 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 575 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 4340 mSolverCounterSat, 174 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4340 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:58:39,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1479 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 4340 Invalid, 4 Unknown, 274 Unchecked, 5.1s Time] [2022-11-26 00:58:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-26 00:58:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 176. [2022-11-26 00:58:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 117 states have (on average 1.5213675213675213) internal successors, (178), 159 states have internal predecessors, (178), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:58:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2022-11-26 00:58:39,593 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 50 [2022-11-26 00:58:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:39,593 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2022-11-26 00:58:39,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 48 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:58:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2022-11-26 00:58:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:58:39,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:39,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:58:39,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:58:39,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-26 00:58:39,812 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting check_seq_nextErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:58:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 362487338, now seen corresponding path program 1 times [2022-11-26 00:58:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:39,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095729537] [2022-11-26 00:58:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:48,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095729537] [2022-11-26 00:58:48,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095729537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:58:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152848484] [2022-11-26 00:58:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:48,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:58:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:58:48,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:58:48,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-26 00:58:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:48,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 187 conjunts are in the unsatisfiable core [2022-11-26 00:58:48,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:58:48,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:58:48,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:48,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:49,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:58:49,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-26 00:58:49,244 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:58:49,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-26 00:58:49,393 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:58:49,393 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 11 treesize of output 3 [2022-11-26 00:58:49,400 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:58:49,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 00:58:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,130 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-26 00:58:51,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 36 [2022-11-26 00:58:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:51,166 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-26 00:58:51,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:58:51,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 33 treesize of output 26 [2022-11-26 00:58:51,189 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 10 treesize of output 9 [2022-11-26 00:58:51,198 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 8 treesize of output 7 [2022-11-26 00:58:51,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-26 00:58:51,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-26 00:58:52,039 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-26 00:58:52,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 71 [2022-11-26 00:58:52,077 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-26 00:58:52,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 98 [2022-11-26 00:58:52,376 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-26 00:58:52,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 54 [2022-11-26 00:58:52,384 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 39 treesize of output 35 [2022-11-26 00:58:52,398 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-26 00:58:52,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 37 [2022-11-26 00:58:53,041 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2989 (Array Int Int)) (v_ArrVal_2988 (Array Int Int)) (v_ArrVal_2987 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2990 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2987) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2989)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2988) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2990)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 00:58:53,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,183 INFO L321 Elim1Store]: treesize reduction 74, result has 35.1 percent of original size [2022-11-26 00:58:53,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 96 treesize of output 117 [2022-11-26 00:58:53,209 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-26 00:58:53,209 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 65 treesize of output 61 [2022-11-26 00:58:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:53,295 INFO L321 Elim1Store]: treesize reduction 70, result has 37.5 percent of original size [2022-11-26 00:58:53,296 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 8 case distinctions, treesize of input 86 treesize of output 112 [2022-11-26 00:58:53,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 00:58:53,402 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2022-11-26 00:58:53,459 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 44 treesize of output 34 [2022-11-26 00:58:53,545 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 15 treesize of output 11 [2022-11-26 00:58:54,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:55,001 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-26 00:58:55,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:58:55,819 INFO L321 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2022-11-26 00:58:55,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 44 [2022-11-26 00:58:55,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:55,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:55,836 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 00:58:55,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2022-11-26 00:58:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-26 00:58:55,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:58:56,847 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:58:56,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-26 00:58:57,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152848484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:58:57,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1382468463] [2022-11-26 00:58:57,687 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-26 00:58:57,687 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:58:57,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:58:57,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:58:57,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:58:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:58:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,843 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:57,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:57,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:57,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:57,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:57,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:57,889 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 15 treesize of output 1 [2022-11-26 00:58:57,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,900 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 [2022-11-26 00:58:57,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:58:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,916 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 [2022-11-26 00:58:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:57,986 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:58:57,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:58:58,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,075 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:58:58,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:58:58,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,155 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:58:58,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:58:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,215 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:58:58,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:58:58,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:58,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:58,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:58,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:58:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,390 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:58,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:58,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:58:58,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:58,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:58:58,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-26 00:58:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,551 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 15 treesize of output 15 [2022-11-26 00:58:58,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:58,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,639 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:58,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:58,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:58,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:58,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,790 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:58,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:58,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:58,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:58,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:58,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:58,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,971 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 15 treesize of output 15 [2022-11-26 00:58:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:58,987 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 15 treesize of output 15 [2022-11-26 00:58:59,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,071 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:59,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:59,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:59,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:59,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:59,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,229 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:59,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:59,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:58:59,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:58:59,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:58:59,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:59,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,548 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:58:59,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:58:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,613 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:59,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,685 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:58:59,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:58:59,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,770 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:58:59,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:58:59,789 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:58:59,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:58:59,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:58:59,815 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 15 treesize of output 1 [2022-11-26 00:58:59,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:59,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:58:59,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,840 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 [2022-11-26 00:58:59,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:58:59,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,870 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 [2022-11-26 00:58:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:59,915 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:59,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:59,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:59,948 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:58:59,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:58:59,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:58:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:58:59,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:58:59,990 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:58:59,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:59:00,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:00,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:59:00,017 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:59:00,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:59:00,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:00,036 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:59:00,226 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:59:12,767 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11259#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (or (not (= 0 |check_seq_next_#in~beg.offset|)) (not (= |check_seq_next_#in~beg.base| 0))) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (<= (+ 4 |check_seq_next_#in~beg.offset|) (select |#length| |check_seq_next_#in~beg.base|)) (= check_seq_next_~beg.base (select (select |#memory_$Pointer$.base| |check_seq_next_#in~beg.base|) |check_seq_next_#in~beg.offset|)) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= (select (select |#memory_$Pointer$.offset| |check_seq_next_#in~beg.base|) |check_seq_next_#in~beg.offset|) check_seq_next_~beg.offset) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_60| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_60| 0)))) (or (not (= check_seq_next_~end.offset check_seq_next_~beg.offset)) (not (= check_seq_next_~beg.base check_seq_next_~end.base))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113| Int)) (and (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|) 0) |check_seq_next_#in~end.base|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|) 0) |check_seq_next_#in~beg.base|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|) 0) |check_seq_next_#in~beg.offset|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113| 0)) (= |check_seq_next_#in~end.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|) 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_126|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_113|)))) (= (select |#valid| |check_seq_next_#in~beg.base|) 1) (<= 0 |check_seq_next_#in~beg.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:59:12,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:59:12,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:59:12,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2022-11-26 00:59:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727869429] [2022-11-26 00:59:12,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:59:12,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-26 00:59:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-26 00:59:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=8982, Unknown=21, NotChecked=190, Total=9506 [2022-11-26 00:59:12,772 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand has 63 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 56 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:59:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:38,281 INFO L93 Difference]: Finished difference Result 369 states and 435 transitions. [2022-11-26 00:59:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-26 00:59:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 56 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-26 00:59:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:38,284 INFO L225 Difference]: With dead ends: 369 [2022-11-26 00:59:38,284 INFO L226 Difference]: Without dead ends: 369 [2022-11-26 00:59:38,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4010 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=755, Invalid=16256, Unknown=23, NotChecked=258, Total=17292 [2022-11-26 00:59:38,285 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 543 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 6891 mSolverCounterSat, 210 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 7326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 6891 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 2196 Invalid, 7326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 6891 Invalid, 10 Unknown, 215 Unchecked, 14.0s Time] [2022-11-26 00:59:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-26 00:59:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 203. [2022-11-26 00:59:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 183 states have internal predecessors, (207), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 00:59:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 243 transitions. [2022-11-26 00:59:38,295 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 243 transitions. Word has length 50 [2022-11-26 00:59:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:38,296 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 243 transitions. [2022-11-26 00:59:38,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 56 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:59:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 243 transitions. [2022-11-26 00:59:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:59:38,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:38,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:38,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:59:38,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:59:38,504 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:59:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686533, now seen corresponding path program 1 times [2022-11-26 00:59:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:38,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531285059] [2022-11-26 00:59:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-26 00:59:38,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:38,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531285059] [2022-11-26 00:59:38,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531285059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:38,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:38,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:59:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996405491] [2022-11-26 00:59:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:59:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:59:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:59:38,648 INFO L87 Difference]: Start difference. First operand 203 states and 243 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-26 00:59:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:38,997 INFO L93 Difference]: Finished difference Result 261 states and 310 transitions. [2022-11-26 00:59:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:59:38,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-26 00:59:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:39,000 INFO L225 Difference]: With dead ends: 261 [2022-11-26 00:59:39,001 INFO L226 Difference]: Without dead ends: 261 [2022-11-26 00:59:39,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:59:39,001 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 80 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:39,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 503 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:59:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-26 00:59:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2022-11-26 00:59:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 140 states have (on average 1.4714285714285715) internal successors, (206), 182 states have internal predecessors, (206), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 00:59:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 242 transitions. [2022-11-26 00:59:39,012 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 242 transitions. Word has length 51 [2022-11-26 00:59:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:39,013 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 242 transitions. [2022-11-26 00:59:39,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-26 00:59:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 242 transitions. [2022-11-26 00:59:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:59:39,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:39,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 00:59:39,014 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 00:59:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686532, now seen corresponding path program 1 times [2022-11-26 00:59:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925159265] [2022-11-26 00:59:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:59:41,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925159265] [2022-11-26 00:59:41,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925159265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:59:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579863754] [2022-11-26 00:59:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:41,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:59:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:59:41,737 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:59:41,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 00:59:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:42,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-26 00:59:42,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:59:42,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:42,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:42,599 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:59:42,599 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 34 treesize of output 25 [2022-11-26 00:59:42,620 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 00:59:42,620 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 23 treesize of output 18 [2022-11-26 00:59:42,706 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:59:42,706 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 30 treesize of output 14 [2022-11-26 00:59:42,712 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:59:42,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:59:43,115 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_3325 (Array Int Int)) (v_ArrVal_3320 Int) (v_ArrVal_3326 (Array Int Int)) (v_ArrVal_3327 (Array Int Int)) (v_ArrVal_3328 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_3320) |c_#length|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3325) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3328)) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3326) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3327) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 00:59:43,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:43,166 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:59:43,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 42 [2022-11-26 00:59:43,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:43,201 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 00:59:43,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-26 00:59:43,214 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-26 00:59:43,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 00:59:43,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:59:43,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 00:59:43,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:59:43,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:59:43,525 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:59:43,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 00:59:43,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:59:43,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:59:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-26 00:59:44,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:59:53,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:59:54,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579863754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:59:54,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [401887490] [2022-11-26 00:59:54,381 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-26 00:59:54,381 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:59:54,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:59:54,382 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:59:54,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:59:54,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:59:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,490 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:59:54,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:59:54,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:59:54,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:59:54,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:54,521 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 15 treesize of output 1 [2022-11-26 00:59:54,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,536 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 [2022-11-26 00:59:54,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,543 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 [2022-11-26 00:59:54,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:59:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,594 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:59:54,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:59:54,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,638 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 00:59:54,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:59:54,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,721 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 00:59:54,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 00:59:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,775 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 00:59:54,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 00:59:54,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:54,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:59:54,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:59:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:59:54,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,939 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:59:54,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:59:54,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:59:54,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 00:59:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 00:59:55,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,062 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 15 treesize of output 15 [2022-11-26 00:59:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,077 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 15 treesize of output 15 [2022-11-26 00:59:55,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:55,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,152 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:55,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:55,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:59:55,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:59:55,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,294 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:55,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:59:55,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:59:55,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,430 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 15 treesize of output 15 [2022-11-26 00:59:55,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,444 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 15 treesize of output 15 [2022-11-26 00:59:55,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,518 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:55,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:55,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:59:55,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:59:55,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,652 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:55,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:55,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 00:59:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 00:59:55,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 00:59:55,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:59:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:55,941 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:59:55,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:59:56,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,081 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:59:56,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:59:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,236 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 00:59:56,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 00:59:56,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,315 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:56,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:56,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,388 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 00:59:56,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 00:59:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,469 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 00:59:56,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 00:59:56,486 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 00:59:56,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:59:56,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:59:56,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:56,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:59:56,519 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 15 treesize of output 1 [2022-11-26 00:59:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,532 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 [2022-11-26 00:59:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,541 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 [2022-11-26 00:59:56,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:59:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:59:56,591 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:59:56,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:59:56,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:56,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:59:56,631 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 00:59:56,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 00:59:56,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:59:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:59:56,678 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:59:56,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 00:59:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:56,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:59:56,704 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:59:56,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 00:59:56,709 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 00:59:56,823 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:00:06,034 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12659#(and (<= 0 |ULTIMATE.start_create_sll_~pp1#1.offset|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.base|) (<= |ULTIMATE.start_create_sll_#in~pp1#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= |ULTIMATE.start_main_~#p2~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem23#1.offset|) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem23#1.base|) (<= 0 |ULTIMATE.start_main_~#p1~0#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_create_sll_#in~pp2#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (or (not (<= 0 (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4))) (not (<= (+ |ULTIMATE.start_main_#t~mem23#1.offset| 8) (select |#length| |ULTIMATE.start_main_#t~mem23#1.base|)))) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 01:00:06,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:00:06,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 01:00:06,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 42 [2022-11-26 01:00:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878920134] [2022-11-26 01:00:06,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 01:00:06,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-26 01:00:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-26 01:00:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=5807, Unknown=5, NotChecked=154, Total=6320 [2022-11-26 01:00:06,036 INFO L87 Difference]: Start difference. First operand 202 states and 242 transitions. Second operand has 43 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 41 states have internal predecessors, (80), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-26 01:00:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:13,198 INFO L93 Difference]: Finished difference Result 314 states and 368 transitions. [2022-11-26 01:00:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-26 01:00:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 41 states have internal predecessors, (80), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 51 [2022-11-26 01:00:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:13,200 INFO L225 Difference]: With dead ends: 314 [2022-11-26 01:00:13,200 INFO L226 Difference]: Without dead ends: 314 [2022-11-26 01:00:13,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=639, Invalid=9656, Unknown=11, NotChecked=200, Total=10506 [2022-11-26 01:00:13,201 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 818 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 151 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:13,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1078 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3930 Invalid, 5 Unknown, 183 Unchecked, 4.3s Time] [2022-11-26 01:00:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-26 01:00:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 201. [2022-11-26 01:00:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 140 states have (on average 1.4642857142857142) internal successors, (205), 181 states have internal predecessors, (205), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 01:00:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 241 transitions. [2022-11-26 01:00:13,209 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 241 transitions. Word has length 51 [2022-11-26 01:00:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:13,210 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 241 transitions. [2022-11-26 01:00:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 41 states have internal predecessors, (80), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-26 01:00:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 241 transitions. [2022-11-26 01:00:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-26 01:00:13,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:13,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:13,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 01:00:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-26 01:00:13,424 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 01:00:13,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 33494336, now seen corresponding path program 1 times [2022-11-26 01:00:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:13,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587544551] [2022-11-26 01:00:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:00:19,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587544551] [2022-11-26 01:00:19,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587544551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768437489] [2022-11-26 01:00:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:19,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:00:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 01:00:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-26 01:00:19,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:20,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:20,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:20,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-26 01:00:20,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-26 01:00:20,152 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-26 01:00:20,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-26 01:00:20,171 INFO L321 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-11-26 01:00:20,171 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 23 treesize of output 22 [2022-11-26 01:00:20,575 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:00:20,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 45 [2022-11-26 01:00:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:20,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:20,592 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:00:20,593 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 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-26 01:00:20,717 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:00:20,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 27 [2022-11-26 01:00:20,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:20,728 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:00:20,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-26 01:00:20,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:00:21,129 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3573 (Array Int Int)) (v_ArrVal_3574 (Array Int Int)) (v_ArrVal_3575 (Array Int Int)) (v_ArrVal_3576 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3574) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3575) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3573) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3576) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:00:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,174 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-26 01:00:21,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 54 [2022-11-26 01:00:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:21,217 INFO L321 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2022-11-26 01:00:21,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 80 [2022-11-26 01:00:21,231 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-26 01:00:21,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 01:00:21,263 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 40 treesize of output 30 [2022-11-26 01:00:21,273 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 33 treesize of output 25 [2022-11-26 01:00:21,302 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 13 treesize of output 9 [2022-11-26 01:00:21,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:00:21,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 01:00:21,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 01:00:22,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:22,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:00:22,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 38 [2022-11-26 01:00:22,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:22,353 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 01:00:22,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-26 01:00:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-26 01:00:22,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:00:22,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 01:00:22,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768437489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362248032] [2022-11-26 01:00:22,967 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-26 01:00:22,967 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:00:22,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:00:22,968 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:00:22,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:00:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:22,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:22,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 01:00:23,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,089 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:23,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:23,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:23,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:00:23,118 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 15 treesize of output 1 [2022-11-26 01:00:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:23,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,138 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 [2022-11-26 01:00:23,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,145 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 [2022-11-26 01:00:23,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:00:23,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,197 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:00:23,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:00:23,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,250 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:00:23,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:00:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,321 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 01:00:23,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 01:00:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,376 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 01:00:23,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 01:00:23,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:23,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:23,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:00:23,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:23,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,524 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:23,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:23,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:23,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:00:23,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,659 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 15 treesize of output 15 [2022-11-26 01:00:23,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,688 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 15 treesize of output 15 [2022-11-26 01:00:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,744 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:23,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:23,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:23,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:23,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:23,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,880 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:23,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:23,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:23,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:23,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:23,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:24,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:24,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,026 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 15 treesize of output 15 [2022-11-26 01:00:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,040 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 15 treesize of output 15 [2022-11-26 01:00:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,116 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:24,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:24,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:24,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:24,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,253 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:24,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:24,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:24,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,518 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:24,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:24,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,637 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:24,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,805 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:24,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,867 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:24,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,933 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:24,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:24,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,027 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:25,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:25,044 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 01:00:25,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:00:25,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:25,064 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 15 treesize of output 1 [2022-11-26 01:00:25,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:25,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,097 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 [2022-11-26 01:00:25,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,107 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 [2022-11-26 01:00:25,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:00:25,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:25,166 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:00:25,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:00:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:25,202 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:00:25,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:00:25,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:25,250 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 01:00:25,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 01:00:25,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:25,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:25,275 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 01:00:25,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 01:00:25,279 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 01:00:25,393 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 45 for LOIs [2022-11-26 01:00:25,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:00:34,564 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13522#(and (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167| Int)) (and (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0))) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|)) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 4)) (not (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 4)) 0)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|))) (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167| Int)) (and (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0)) 1) (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0))) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|)) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 4)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_167|) 0) 4)) 0))))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:00:34,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:00:34,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 01:00:34,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 43 [2022-11-26 01:00:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487109454] [2022-11-26 01:00:34,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 01:00:34,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-26 01:00:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-26 01:00:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=5368, Unknown=5, NotChecked=148, Total=5852 [2022-11-26 01:00:34,567 INFO L87 Difference]: Start difference. First operand 201 states and 241 transitions. Second operand has 43 states, 36 states have (on average 2.25) internal successors, (81), 42 states have internal predecessors, (81), 8 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-26 01:00:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:44,680 INFO L93 Difference]: Finished difference Result 380 states and 445 transitions. [2022-11-26 01:00:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-26 01:00:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 36 states have (on average 2.25) internal successors, (81), 42 states have internal predecessors, (81), 8 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 54 [2022-11-26 01:00:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:44,683 INFO L225 Difference]: With dead ends: 380 [2022-11-26 01:00:44,683 INFO L226 Difference]: Without dead ends: 380 [2022-11-26 01:00:44,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=626, Invalid=9269, Unknown=9, NotChecked=196, Total=10100 [2022-11-26 01:00:44,684 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 377 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 88 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:44,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1468 Invalid, 4252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3856 Invalid, 8 Unknown, 300 Unchecked, 5.5s Time] [2022-11-26 01:00:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-26 01:00:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 205. [2022-11-26 01:00:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 144 states have (on average 1.4513888888888888) internal successors, (209), 184 states have internal predecessors, (209), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 01:00:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 245 transitions. [2022-11-26 01:00:44,692 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 245 transitions. Word has length 54 [2022-11-26 01:00:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:44,693 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 245 transitions. [2022-11-26 01:00:44,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 36 states have (on average 2.25) internal successors, (81), 42 states have internal predecessors, (81), 8 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-26 01:00:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 245 transitions. [2022-11-26 01:00:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 01:00:44,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:44,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:44,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-26 01:00:44,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-26 01:00:44,901 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 01:00:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:44,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1038208482, now seen corresponding path program 1 times [2022-11-26 01:00:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462637378] [2022-11-26 01:00:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:44,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:50,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462637378] [2022-11-26 01:00:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462637378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522689448] [2022-11-26 01:00:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:50,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:50,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:50,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:00:50,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-26 01:00:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:50,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-26 01:00:50,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:50,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 01:00:50,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:51,148 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:00:51,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2022-11-26 01:00:51,295 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:00:51,295 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 30 treesize of output 14 [2022-11-26 01:00:51,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:51,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:51,739 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3803 Int) (v_ArrVal_3806 (Array Int Int)) (v_ArrVal_3807 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_3803)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3806) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3807)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:00:51,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:51,783 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 01:00:51,783 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 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-26 01:00:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:51,818 INFO L321 Elim1Store]: treesize reduction 42, result has 35.4 percent of original size [2022-11-26 01:00:51,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 37 [2022-11-26 01:00:51,830 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 28 treesize of output 20 [2022-11-26 01:00:51,877 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 15 treesize of output 11 [2022-11-26 01:00:52,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-26 01:00:52,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:00:52,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 62 [2022-11-26 01:00:52,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2022-11-26 01:00:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:52,982 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 01:00:52,982 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 1 case distinctions, treesize of input 44 treesize of output 50 [2022-11-26 01:00:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:53,042 INFO L321 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2022-11-26 01:00:53,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 70 [2022-11-26 01:00:53,187 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 15 treesize of output 11 [2022-11-26 01:00:53,201 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 9 treesize of output 7 [2022-11-26 01:00:53,210 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 35 treesize of output 29 [2022-11-26 01:00:53,237 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 6 treesize of output 4 [2022-11-26 01:00:53,593 INFO L321 Elim1Store]: treesize reduction 50, result has 52.8 percent of original size [2022-11-26 01:00:53,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 99 [2022-11-26 01:00:54,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-26 01:00:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-26 01:00:54,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:00:55,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522689448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:55,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229293222] [2022-11-26 01:00:55,294 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-26 01:00:55,294 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:00:55,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:00:55,295 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:00:55,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:00:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 01:00:55,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,411 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:55,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:55,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:00:55,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:55,445 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 15 treesize of output 1 [2022-11-26 01:00:55,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:55,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:55,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,464 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 [2022-11-26 01:00:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,472 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 [2022-11-26 01:00:55,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:00:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,530 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:00:55,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:00:55,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,568 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:00:55,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:00:55,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:55,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:55,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,633 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 01:00:55,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 01:00:55,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,696 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 01:00:55,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 01:00:55,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:00:55,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:55,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:55,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,848 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:55,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:55,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:55,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:00:55,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:00:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,968 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 15 treesize of output 15 [2022-11-26 01:00:55,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:55,979 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 15 treesize of output 15 [2022-11-26 01:00:55,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:56,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,068 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:56,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:56,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:56,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,221 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:56,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:56,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:56,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,360 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 15 treesize of output 15 [2022-11-26 01:00:56,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:56,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,384 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 15 treesize of output 15 [2022-11-26 01:00:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,454 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:56,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,594 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:56,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:00:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:00:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:00:56,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,897 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:56,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:56,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,022 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:57,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:57,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,197 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:00:57,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:00:57,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,260 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:57,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:57,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,321 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:00:57,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:00:57,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,412 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:00:57,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:00:57,431 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 01:00:57,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:00:57,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:00:57,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:57,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:57,461 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 15 treesize of output 1 [2022-11-26 01:00:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,475 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 [2022-11-26 01:00:57,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:00:57,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,489 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 [2022-11-26 01:00:57,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:57,532 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:00:57,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:00:57,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:57,571 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:00:57,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:00:57,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:00:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:57,611 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 01:00:57,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 01:00:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:00:57,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:00:57,639 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 01:00:57,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 01:00:57,646 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 01:00:57,771 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:09,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14478#(and (not (= (select |#valid| |ULTIMATE.start_main_#t~mem25#1.base|) 1)) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.offset|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) 1) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p2~0#1.base|) |ULTIMATE.start_main_~#p2~0#1.offset|) |ULTIMATE.start_main_#t~mem25#1.base|) (<= |ULTIMATE.start_create_sll_#in~pp1#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p2~0#1.base|) |ULTIMATE.start_main_~#p2~0#1.offset|) |ULTIMATE.start_main_#t~mem25#1.offset|) (<= 0 |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) 0) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= |ULTIMATE.start_main_~#p2~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~#p2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p2~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#p1~0#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_create_sll_#in~pp2#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:09,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:09,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 01:01:09,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27] total 55 [2022-11-26 01:01:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364150262] [2022-11-26 01:01:09,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:09,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-26 01:01:09,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-26 01:01:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=7634, Unknown=56, NotChecked=176, Total=8190 [2022-11-26 01:01:09,829 INFO L87 Difference]: Start difference. First operand 205 states and 245 transitions. Second operand has 56 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 53 states have internal predecessors, (92), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 01:01:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,666 INFO L93 Difference]: Finished difference Result 396 states and 473 transitions. [2022-11-26 01:01:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-26 01:01:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 53 states have internal predecessors, (92), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 55 [2022-11-26 01:01:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,670 INFO L225 Difference]: With dead ends: 396 [2022-11-26 01:01:26,670 INFO L226 Difference]: Without dead ends: 396 [2022-11-26 01:01:26,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=721, Invalid=14201, Unknown=88, NotChecked=242, Total=15252 [2022-11-26 01:01:26,672 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1004 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 259 mSolverCounterUnsat, 130 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 130 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1908 Invalid, 6320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 5640 Invalid, 130 Unknown, 291 Unchecked, 9.2s Time] [2022-11-26 01:01:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-26 01:01:26,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 204. [2022-11-26 01:01:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 144 states have (on average 1.4444444444444444) internal successors, (208), 183 states have internal predecessors, (208), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 01:01:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2022-11-26 01:01:26,684 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 55 [2022-11-26 01:01:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,684 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2022-11-26 01:01:26,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 53 states have internal predecessors, (92), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 01:01:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2022-11-26 01:01:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 01:01:26,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:26,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:26,891 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 01:01:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1038208483, now seen corresponding path program 1 times [2022-11-26 01:01:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621220949] [2022-11-26 01:01:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:34,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:34,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621220949] [2022-11-26 01:01:34,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621220949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:34,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356178429] [2022-11-26 01:01:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:34,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:34,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:34,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-26 01:01:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:34,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 195 conjunts are in the unsatisfiable core [2022-11-26 01:01:34,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:34,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:34,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:35,567 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 01:01:35,568 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 25 treesize of output 29 [2022-11-26 01:01:35,577 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 15 treesize of output 11 [2022-11-26 01:01:35,638 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:01:35,639 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 23 treesize of output 18 [2022-11-26 01:01:35,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:01:35,867 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 34 treesize of output 39 [2022-11-26 01:01:35,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:01:35,885 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 26 treesize of output 31 [2022-11-26 01:01:35,896 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:01:35,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 01:01:35,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-26 01:01:36,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:36,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:36,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2022-11-26 01:01:36,930 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-26 01:01:36,930 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 3 case distinctions, treesize of input 37 treesize of output 52 [2022-11-26 01:01:36,993 INFO L321 Elim1Store]: treesize reduction 34, result has 54.7 percent of original size [2022-11-26 01:01:36,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-26 01:01:37,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 55 treesize of output 42 [2022-11-26 01:01:37,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:37,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:37,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:37,026 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-26 01:01:37,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 35 [2022-11-26 01:01:37,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-26 01:01:37,048 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 12 treesize of output 11 [2022-11-26 01:01:37,949 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-26 01:01:37,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 67 [2022-11-26 01:01:38,020 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-26 01:01:38,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-11-26 01:01:38,252 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 01:01:38,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 49 [2022-11-26 01:01:38,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:01:38,268 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 34 treesize of output 39 [2022-11-26 01:01:38,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:01:38,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2022-11-26 01:01:38,312 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 01:01:38,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 10 [2022-11-26 01:01:39,072 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4052 Int) (v_ArrVal_4057 (Array Int Int)) (v_ArrVal_4058 (Array Int Int)) (v_ArrVal_4059 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4060 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4058) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4060)) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4057) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4059) |c_#memory_$Pointer$.offset|) (= (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_4052) |c_#length|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:01:39,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:39,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:39,155 INFO L321 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2022-11-26 01:01:39,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 117 [2022-11-26 01:01:39,233 INFO L321 Elim1Store]: treesize reduction 4, result has 94.5 percent of original size [2022-11-26 01:01:39,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 121 [2022-11-26 01:01:39,282 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-26 01:01:39,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 72 [2022-11-26 01:01:39,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:39,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:39,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:39,359 INFO L321 Elim1Store]: treesize reduction 28, result has 55.6 percent of original size [2022-11-26 01:01:39,359 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 5 case distinctions, treesize of input 35 treesize of output 62 [2022-11-26 01:01:39,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:01:39,422 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 01:01:39,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 01:01:39,732 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 110 treesize of output 88 [2022-11-26 01:01:40,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:01:41,585 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-26 01:01:41,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 01:01:43,139 INFO L321 Elim1Store]: treesize reduction 36, result has 18.2 percent of original size [2022-11-26 01:01:43,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 36 [2022-11-26 01:01:43,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-26 01:01:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-26 01:01:43,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:52,516 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:01:52,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-26 01:01:53,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356178429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:53,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696354620] [2022-11-26 01:01:53,400 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-26 01:01:53,401 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:53,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:53,401 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:53,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 01:01:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,545 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:01:53,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:01:53,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:01:53,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:01:53,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:53,581 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 15 treesize of output 1 [2022-11-26 01:01:53,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,598 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 [2022-11-26 01:01:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,606 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 [2022-11-26 01:01:53,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:01:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,658 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:01:53,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:01:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,699 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:01:53,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:01:53,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:53,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:53,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,765 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 01:01:53,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 01:01:53,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,838 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 01:01:53,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 01:01:53,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:01:53,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:01:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:01:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:53,981 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:01:53,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:01:54,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:01:54,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:01:54,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:01:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,123 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 15 treesize of output 15 [2022-11-26 01:01:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,147 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 15 treesize of output 15 [2022-11-26 01:01:54,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,214 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:54,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:54,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:01:54,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:01:54,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,355 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:54,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:54,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:01:54,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:01:54,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:54,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,499 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 15 treesize of output 15 [2022-11-26 01:01:54,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,510 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 15 treesize of output 15 [2022-11-26 01:01:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,572 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:54,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:01:54,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:01:54,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,707 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:54,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:01:54,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:01:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:01:54,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:01:54,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:54,985 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:01:54,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:01:55,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,115 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:01:55,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:01:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,286 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:01:55,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:01:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,358 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:55,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,426 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:01:55,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:01:55,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,510 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:01:55,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:01:55,526 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-26 01:01:55,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:01:55,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:01:55,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:55,552 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 15 treesize of output 1 [2022-11-26 01:01:55,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:01:55,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:01:55,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,579 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 [2022-11-26 01:01:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,589 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 [2022-11-26 01:01:55,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:01:55,643 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:01:55,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:01:55,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:01:55,676 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:01:55,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:01:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:01:55,713 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 01:01:55,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 01:01:55,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:01:55,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:01:55,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:01:55,751 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 01:01:55,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 01:01:55,756 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 01:01:55,874 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:08,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15480#(and (or (not (<= 0 (+ |ULTIMATE.start_main_#t~mem25#1.offset| 4))) (not (<= (+ |ULTIMATE.start_main_#t~mem25#1.offset| 8) (select |#length| |ULTIMATE.start_main_#t~mem25#1.base|)))) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.offset|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) 1) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p2~0#1.base|) |ULTIMATE.start_main_~#p2~0#1.offset|) |ULTIMATE.start_main_#t~mem25#1.base|) (<= |ULTIMATE.start_create_sll_#in~pp1#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p2~0#1.base|) |ULTIMATE.start_main_~#p2~0#1.offset|) |ULTIMATE.start_main_#t~mem25#1.offset|) (<= 0 |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) 0) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= |ULTIMATE.start_main_~#p2~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~#p2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p2~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#p1~0#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_create_sll_#in~pp2#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) 4)) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 01:02:08,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:08,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 01:02:08,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 35] total 60 [2022-11-26 01:02:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888414163] [2022-11-26 01:02:08,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:08,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-26 01:02:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-26 01:02:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=9843, Unknown=7, NotChecked=200, Total=10506 [2022-11-26 01:02:08,953 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand has 61 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 58 states have internal predecessors, (94), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 01:02:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:30,891 INFO L93 Difference]: Finished difference Result 397 states and 469 transitions. [2022-11-26 01:02:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-26 01:02:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 58 states have internal predecessors, (94), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 55 [2022-11-26 01:02:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:30,893 INFO L225 Difference]: With dead ends: 397 [2022-11-26 01:02:30,894 INFO L226 Difference]: Without dead ends: 397 [2022-11-26 01:02:30,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5561 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=969, Invalid=16572, Unknown=19, NotChecked=262, Total=17822 [2022-11-26 01:02:30,896 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1098 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 5965 mSolverCounterSat, 248 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 6610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 5965 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:30,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1446 Invalid, 6610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 5965 Invalid, 12 Unknown, 385 Unchecked, 12.2s Time] [2022-11-26 01:02:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-26 01:02:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 203. [2022-11-26 01:02:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 144 states have (on average 1.4375) internal successors, (207), 182 states have internal predecessors, (207), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 01:02:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 243 transitions. [2022-11-26 01:02:30,904 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 243 transitions. Word has length 55 [2022-11-26 01:02:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:30,904 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 243 transitions. [2022-11-26 01:02:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 58 states have internal predecessors, (94), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 01:02:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 243 transitions. [2022-11-26 01:02:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-26 01:02:30,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:30,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:30,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-26 01:02:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-26 01:02:31,113 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 01:02:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1315294453, now seen corresponding path program 1 times [2022-11-26 01:02:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438298889] [2022-11-26 01:02:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:02:39,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438298889] [2022-11-26 01:02:39,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438298889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942818974] [2022-11-26 01:02:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:39,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:39,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:39,220 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:39,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-26 01:02:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:39,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-26 01:02:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:40,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:40,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:40,445 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:02:40,445 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 34 treesize of output 25 [2022-11-26 01:02:40,468 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:02:40,469 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 23 treesize of output 18 [2022-11-26 01:02:40,579 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:02:40,579 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 30 treesize of output 14 [2022-11-26 01:02:40,585 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:02:40,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 01:02:41,171 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4351 (Array Int Int)) (v_ArrVal_4352 (Array Int Int)) (v_ArrVal_4353 (Array Int Int)) (v_ArrVal_4354 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4345 Int) (v_ArrVal_4346 Int)) (and (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_4346)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_4345) |c_#length|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4352) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4353) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4351) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4354)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:02:41,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:41,230 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 01:02:41,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-26 01:02:41,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:41,274 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-26 01:02:41,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-26 01:02:41,298 INFO L321 Elim1Store]: treesize reduction 24, result has 36.8 percent of original size [2022-11-26 01:02:41,298 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 19 treesize of output 25 [2022-11-26 01:02:41,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 01:02:41,324 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 21 treesize of output 15 [2022-11-26 01:02:41,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 01:02:41,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:02:41,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:41,581 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 34 treesize of output 39 [2022-11-26 01:02:41,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:41,594 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 26 treesize of output 31 [2022-11-26 01:02:41,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:41,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-26 01:02:42,109 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4361 (Array Int Int)) (v_ArrVal_4362 (Array Int Int)) (v_ArrVal_4363 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4358 (Array Int Int)) (v_ArrVal_4359 (Array Int Int)) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_4360 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_4359) |chain_node_~node~0#1.base| v_ArrVal_4360) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4363)) (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base|) 0) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| (select |c_#length| |chain_node_alloc_node_~ptr~0#1.base|)) |c_#length|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= |c_#memory_$Pointer$.offset| (store (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_4358) |chain_node_~node~0#1.base| v_ArrVal_4361) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4362)))) is different from true [2022-11-26 01:02:42,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:42,199 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-26 01:02:42,199 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 3 case distinctions, treesize of input 47 treesize of output 66 [2022-11-26 01:02:42,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:42,264 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-26 01:02:42,264 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 3 case distinctions, treesize of input 24 treesize of output 45 [2022-11-26 01:02:42,306 INFO L321 Elim1Store]: treesize reduction 38, result has 37.7 percent of original size [2022-11-26 01:02:42,306 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 3 case distinctions, treesize of input 39 treesize of output 47 [2022-11-26 01:02:42,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:42,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 50 [2022-11-26 01:02:42,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:02:42,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 01:02:42,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:02:42,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 01:02:42,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 01:02:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 15 refuted. 3 times theorem prover too weak. 2 trivial. 3 not checked. [2022-11-26 01:02:43,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:43,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 01:02:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942818974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1970147789] [2022-11-26 01:02:44,359 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-26 01:02:44,359 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:44,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:44,360 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:44,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:44,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 01:02:44,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,472 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:02:44,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:02:44,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:02:44,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:02:44,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:44,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:44,508 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 15 treesize of output 1 [2022-11-26 01:02:44,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,518 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 [2022-11-26 01:02:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,526 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 [2022-11-26 01:02:44,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:02:44,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,577 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:02:44,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:02:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,619 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-26 01:02:44,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 01:02:44,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:44,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,682 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-26 01:02:44,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-26 01:02:44,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,764 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-26 01:02:44,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-26 01:02:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:02:44,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:02:44,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:02:44,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,927 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:02:44,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:02:44,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:02:44,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-26 01:02:44,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-26 01:02:45,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,066 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 15 treesize of output 15 [2022-11-26 01:02:45,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,084 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 15 treesize of output 15 [2022-11-26 01:02:45,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,150 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:02:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:02:45,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,292 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:45,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:02:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:02:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:45,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,452 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 15 treesize of output 15 [2022-11-26 01:02:45,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,471 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 15 treesize of output 15 [2022-11-26 01:02:45,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,541 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:02:45,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:02:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,705 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:45,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-26 01:02:45,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-26 01:02:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-26 01:02:45,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,878 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:45,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,953 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:45,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:46,147 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-26 01:02:46,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-26 01:02:46,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:02:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,577 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-26 01:02:46,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-26 01:02:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,642 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-26 01:02:46,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-26 01:02:46,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,715 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-26 01:02:46,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-26 01:02:46,731 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-26 01:02:46,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 01:02:46,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:02:46,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:46,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:46,887 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 15 treesize of output 1 [2022-11-26 01:02:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,940 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 [2022-11-26 01:02:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,956 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 [2022-11-26 01:02:46,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 01:02:47,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:47,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:02:47,112 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:02:47,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:02:47,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:47,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:02:47,180 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-26 01:02:47,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-26 01:02:47,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:47,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 01:02:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:47,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:02:47,349 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 01:02:47,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-26 01:02:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:47,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:02:47,382 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 01:02:47,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-26 01:02:47,408 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-26 01:02:47,523 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:58,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16441#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (= check_seq_next_~beg.offset |check_seq_next_#in~beg.offset|) (= check_seq_next_~beg.base |check_seq_next_#in~beg.base|) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_80| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_80|) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_80|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_80|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_80|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_80| 0)) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_80|)))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (or (not (<= (+ check_seq_next_~beg.offset 4) (select |#length| check_seq_next_~beg.base))) (not (<= 0 check_seq_next_~beg.offset))) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|)) (= |check_seq_next_#in~beg.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) |check_seq_next_#in~end.base|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|) 0) |check_seq_next_#in~beg.offset|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) |check_seq_next_#in~end.offset|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_198|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| 0)))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:02:58,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:58,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 01:02:58,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 48 [2022-11-26 01:02:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165273918] [2022-11-26 01:02:58,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-26 01:02:58,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-26 01:02:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=5384, Unknown=18, NotChecked=298, Total=6006 [2022-11-26 01:02:58,867 INFO L87 Difference]: Start difference. First operand 203 states and 243 transitions. Second operand has 49 states, 40 states have (on average 2.15) internal successors, (86), 45 states have internal predecessors, (86), 8 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-26 01:03:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:09,887 INFO L93 Difference]: Finished difference Result 268 states and 315 transitions. [2022-11-26 01:03:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:03:09,888 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 40 states have (on average 2.15) internal successors, (86), 45 states have internal predecessors, (86), 8 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2022-11-26 01:03:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:09,889 INFO L225 Difference]: With dead ends: 268 [2022-11-26 01:03:09,889 INFO L226 Difference]: Without dead ends: 268 [2022-11-26 01:03:09,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2458 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=498, Invalid=7674, Unknown=26, NotChecked=358, Total=8556 [2022-11-26 01:03:09,890 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 525 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 80 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:09,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 963 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4253 Invalid, 11 Unknown, 362 Unchecked, 6.5s Time] [2022-11-26 01:03:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-26 01:03:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 203. [2022-11-26 01:03:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 182 states have internal predecessors, (206), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 01:03:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 242 transitions. [2022-11-26 01:03:09,898 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 242 transitions. Word has length 56 [2022-11-26 01:03:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:09,899 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 242 transitions. [2022-11-26 01:03:09,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 40 states have (on average 2.15) internal successors, (86), 45 states have internal predecessors, (86), 8 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-26 01:03:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 242 transitions. [2022-11-26 01:03:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-26 01:03:09,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:09,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:09,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:10,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-26 01:03:10,107 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-26 01:03:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:10,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1209652173, now seen corresponding path program 1 times [2022-11-26 01:03:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:03:10,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587660328] [2022-11-26 01:03:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:03:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:03:19,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:03:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587660328] [2022-11-26 01:03:19,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587660328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:03:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395770735] [2022-11-26 01:03:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:19,484 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba3fcdfd-f6e0-487d-bebc-89c4081b14af/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-26 01:03:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 201 conjunts are in the unsatisfiable core [2022-11-26 01:03:19,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:19,955 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-26 01:03:19,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 27 [2022-11-26 01:03:20,123 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:03:20,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:03:20,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-11-26 01:03:20,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-11-26 01:03:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:21,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-26 01:03:21,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:21,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-26 01:03:21,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 24 treesize of output 19 [2022-11-26 01:03:21,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 24 treesize of output 19 [2022-11-26 01:03:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:21,511 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-26 01:03:21,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 18 [2022-11-26 01:03:21,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2022-11-26 01:03:21,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2022-11-26 01:03:22,162 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-26 01:03:22,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 64 [2022-11-26 01:03:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:22,186 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-26 01:03:22,187 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 45 treesize of output 46 [2022-11-26 01:03:22,416 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 01:03:22,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 39 [2022-11-26 01:03:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:22,429 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 01:03:22,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2022-11-26 01:03:22,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:03:23,026 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4619 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4615 (Array Int Int)) (v_ArrVal_4616 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4615) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4619)) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| (select |c_#valid| |chain_node_~node~0#1.base|))) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4616))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:03:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:23,148 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-26 01:03:23,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 129 [2022-11-26 01:03:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:23,247 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-26 01:03:23,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 106 [2022-11-26 01:03:23,296 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-11-26 01:03:23,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 01:03:23,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 14 treesize of output 11 [2022-11-26 01:03:23,415 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 79 treesize of output 57 [2022-11-26 01:03:23,498 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 61 treesize of output 45 [2022-11-26 01:03:23,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:23,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-26 01:03:23,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-26 01:03:23,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:03:23,647 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 0 case distinctions, treesize of input 67 treesize of output 37 [2022-11-26 01:03:23,654 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 01:03:23,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:03:26,257 INFO L321 Elim1Store]: treesize reduction 227, result has 29.3 percent of original size [2022-11-26 01:03:26,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 25613 treesize of output 25284 [2022-11-26 01:03:26,572 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 01:03:26,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25221 treesize of output 21112 [2022-11-26 01:03:28,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24012 treesize of output 23359 [2022-11-26 01:03:28,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11764 treesize of output 11442 [2022-11-26 01:03:31,603 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 12 treesize of output 11 [2022-11-26 01:03:31,693 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 12 treesize of output 11 [2022-11-26 01:03:31,741 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 12 treesize of output 11 [2022-11-26 01:03:34,127 INFO L321 Elim1Store]: treesize reduction 12, result has 96.3 percent of original size [2022-11-26 01:03:34,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 343 treesize of output 589 [2022-11-26 01:03:34,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:03:34,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 360 treesize of output 327 [2022-11-26 01:03:34,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:03:34,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 212 [2022-11-26 01:04:49,719 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 01:04:52,006 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 01:04:57,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-26 01:04:57,785 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4630 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4627 (Array Int Int)) (v_ArrVal_4628 (Array Int Int)) (v_ArrVal_4629 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4628) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4629)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4627) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4630) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-26 01:04:57,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:04:59,009 INFO L321 Elim1Store]: treesize reduction 261, result has 59.0 percent of original size [2022-11-26 01:04:59,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 352 treesize of output 660 [2022-11-26 01:04:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:04:59,354 INFO L321 Elim1Store]: treesize reduction 89, result has 53.6 percent of original size [2022-11-26 01:04:59,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 393 treesize of output 428 [2022-11-26 01:04:59,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:04:59,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233 treesize of output 273