./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 8393723b 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_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/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_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 06:59:42,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:59:42,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:59:42,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:59:42,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:59:42,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:59:42,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:59:42,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:59:42,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:59:42,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:59:42,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:59:42,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:59:42,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:59:42,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:59:42,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:59:42,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:59:42,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:59:42,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:59:42,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:59:42,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:59:42,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:59:42,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:59:42,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:59:42,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:59:42,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:59:42,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:59:42,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:59:42,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:59:42,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:59:42,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:59:42,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:59:42,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:59:42,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:59:42,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:59:42,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:59:42,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:59:42,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:59:42,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:59:42,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:59:42,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:59:42,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:59:42,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:59:43,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:59:43,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:59:43,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:59:43,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:59:43,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:59:43,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:59:43,038 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:59:43,038 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:59:43,038 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:59:43,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:59:43,039 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:59:43,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:59:43,039 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:59:43,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:59:43,039 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:59:43,040 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:59:43,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:59:43,052 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:59:43,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:59:43,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:59:43,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:59:43,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:59:43,053 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:59:43,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:59:43,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:59:43,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:59:43,054 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:59:43,054 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:59:43,054 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:59:43,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:59:43,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:59:43,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:59:43,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:59:43,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:59:43,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:59:43,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:43,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:59:43,057 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:59:43,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:59:43,057 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:59:43,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:59:43,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:59:43,057 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_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2022-11-19 06:59:43,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:59:43,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:59:43,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:59:43,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:59:43,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:59:43,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-19 06:59:43,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/data/b7f78c2be/e7554cc0bf444b85b37248ae0141f2be/FLAGf8e36bb2e [2022-11-19 06:59:43,924 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:59:43,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-19 06:59:43,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/data/b7f78c2be/e7554cc0bf444b85b37248ae0141f2be/FLAGf8e36bb2e [2022-11-19 06:59:44,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/data/b7f78c2be/e7554cc0bf444b85b37248ae0141f2be [2022-11-19 06:59:44,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:59:44,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:59:44,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:44,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:59:44,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:59:44,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1842822b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44, skipping insertion in model container [2022-11-19 06:59:44,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:59:44,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:59:44,722 WARN L234 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_9fd02742-b2ad-4836-9e0a-7715de654f88/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-19 06:59:44,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:44,779 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:59:44,834 WARN L234 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_9fd02742-b2ad-4836-9e0a-7715de654f88/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-19 06:59:44,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:44,894 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:59:44,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44 WrapperNode [2022-11-19 06:59:44,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:44,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:44,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:59:44,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:59:44,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,991 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2022-11-19 06:59:44,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:44,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:59:44,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:59:44,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:59:45,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:59:45,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:59:45,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:59:45,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:59:45,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:45,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:59:45,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:59:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-19 06:59:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:59:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-11-19 06:59:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-11-19 06:59:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:59:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:59:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-11-19 06:59:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-11-19 06:59:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:59:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-11-19 06:59:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-11-19 06:59:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:59:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:59:45,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:59:45,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:59:45,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:59:46,079 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:59:46,079 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-11-19 06:59:46,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:46 BoogieIcfgContainer [2022-11-19 06:59:46,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:59:46,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:59:46,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:59:46,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:59:46,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:59:44" (1/3) ... [2022-11-19 06:59:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c8173a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:46, skipping insertion in model container [2022-11-19 06:59:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44" (2/3) ... [2022-11-19 06:59:46,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c8173a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:46, skipping insertion in model container [2022-11-19 06:59:46,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:46" (3/3) ... [2022-11-19 06:59:46,092 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2022-11-19 06:59:46,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:59:46,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2022-11-19 06:59:46,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:59:46,172 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;@491dff88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:59:46,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2022-11-19 06:59:46,178 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) [2022-11-19 06:59:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:59:46,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:46,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:59:46,187 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)] === [2022-11-19 06:59:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 536459, now seen corresponding path program 1 times [2022-11-19 06:59:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:46,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004710925] [2022-11-19 06:59:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:46,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:46,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004710925] [2022-11-19 06:59:46,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004710925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:46,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:46,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:59:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458564021] [2022-11-19 06:59:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:46,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:59:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:59:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:59:46,496 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) [2022-11-19 06:59:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:46,639 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2022-11-19 06:59:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:59:46,643 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 [2022-11-19 06:59:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:46,660 INFO L225 Difference]: With dead ends: 193 [2022-11-19 06:59:46,661 INFO L226 Difference]: Without dead ends: 192 [2022-11-19 06:59:46,663 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 [2022-11-19 06:59:46,667 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 [2022-11-19 06:59:46,669 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] [2022-11-19 06:59:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-19 06:59:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-19 06:59:46,719 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) [2022-11-19 06:59:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2022-11-19 06:59:46,725 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 3 [2022-11-19 06:59:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:46,725 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2022-11-19 06:59:46,725 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) [2022-11-19 06:59:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2022-11-19 06:59:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:59:46,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:46,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:59:46,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:59:46,727 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)] === [2022-11-19 06:59:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash 16931764, now seen corresponding path program 1 times [2022-11-19 06:59:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045335628] [2022-11-19 06:59:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:46,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045335628] [2022-11-19 06:59:46,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045335628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:46,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:46,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:59:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17320584] [2022-11-19 06:59:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:46,858 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) [2022-11-19 06:59:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:47,062 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-11-19 06:59:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:47,064 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 [2022-11-19 06:59:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:47,072 INFO L225 Difference]: With dead ends: 190 [2022-11-19 06:59:47,072 INFO L226 Difference]: Without dead ends: 190 [2022-11-19 06:59:47,077 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 [2022-11-19 06:59:47,079 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:47,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 288 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:59:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-19 06:59:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-19 06:59:47,097 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) [2022-11-19 06:59:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2022-11-19 06:59:47,106 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 4 [2022-11-19 06:59:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2022-11-19 06:59:47,107 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) [2022-11-19 06:59:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2022-11-19 06:59:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:59:47,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:47,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:59:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:59:47,108 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)] === [2022-11-19 06:59:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 16931765, now seen corresponding path program 1 times [2022-11-19 06:59:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:47,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362074376] [2022-11-19 06:59:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:47,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:47,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:47,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362074376] [2022-11-19 06:59:47,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362074376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:47,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:47,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:59:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040865591] [2022-11-19 06:59:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:47,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:47,289 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) [2022-11-19 06:59:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:47,455 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2022-11-19 06:59:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:47,456 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 [2022-11-19 06:59:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:47,457 INFO L225 Difference]: With dead ends: 188 [2022-11-19 06:59:47,457 INFO L226 Difference]: Without dead ends: 188 [2022-11-19 06:59:47,460 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 [2022-11-19 06:59:47,465 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:47,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:59:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-19 06:59:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-19 06:59:47,480 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) [2022-11-19 06:59:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2022-11-19 06:59:47,481 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 4 [2022-11-19 06:59:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:47,482 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2022-11-19 06:59:47,482 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) [2022-11-19 06:59:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2022-11-19 06:59:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:59:47,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:47,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:59:47,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:59:47,483 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)] === [2022-11-19 06:59:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash -908428318, now seen corresponding path program 1 times [2022-11-19 06:59:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:47,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899791081] [2022-11-19 06:59:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:47,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899791081] [2022-11-19 06:59:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899791081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:47,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:47,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:59:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245353356] [2022-11-19 06:59:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:59:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:59:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:59:47,734 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) [2022-11-19 06:59:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:48,009 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2022-11-19 06:59:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:59:48,009 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 [2022-11-19 06:59:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:48,010 INFO L225 Difference]: With dead ends: 183 [2022-11-19 06:59:48,011 INFO L226 Difference]: Without dead ends: 183 [2022-11-19 06:59:48,011 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 [2022-11-19 06:59:48,015 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 38 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:48,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 578 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:59:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-19 06:59:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-19 06:59:48,041 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) [2022-11-19 06:59:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2022-11-19 06:59:48,045 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 6 [2022-11-19 06:59:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:48,045 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2022-11-19 06:59:48,045 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) [2022-11-19 06:59:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2022-11-19 06:59:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:59:48,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:48,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:59:48,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:59:48,046 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)] === [2022-11-19 06:59:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -908428317, now seen corresponding path program 1 times [2022-11-19 06:59:48,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:48,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583670590] [2022-11-19 06:59:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:48,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:48,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583670590] [2022-11-19 06:59:48,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583670590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:48,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:48,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806739799] [2022-11-19 06:59:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:48,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:59:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:48,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:59:48,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:59:48,406 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) [2022-11-19 06:59:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:48,755 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-11-19 06:59:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:59:48,755 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 [2022-11-19 06:59:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:48,756 INFO L225 Difference]: With dead ends: 178 [2022-11-19 06:59:48,756 INFO L226 Difference]: Without dead ends: 178 [2022-11-19 06:59:48,757 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 [2022-11-19 06:59:48,757 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 [2022-11-19 06:59:48,758 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] [2022-11-19 06:59:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-19 06:59:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-19 06:59:48,762 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) [2022-11-19 06:59:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2022-11-19 06:59:48,764 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 6 [2022-11-19 06:59:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:48,764 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2022-11-19 06:59:48,764 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) [2022-11-19 06:59:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2022-11-19 06:59:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:59:48,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:48,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:48,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:59:48,765 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)] === [2022-11-19 06:59:48,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493348, now seen corresponding path program 1 times [2022-11-19 06:59:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:48,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868229850] [2022-11-19 06:59:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:48,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:48,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868229850] [2022-11-19 06:59:48,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868229850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:48,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:48,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:48,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313151279] [2022-11-19 06:59:48,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:48,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:59:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:59:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:59:48,822 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) [2022-11-19 06:59:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:49,018 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-19 06:59:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:59:49,019 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 [2022-11-19 06:59:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:49,020 INFO L225 Difference]: With dead ends: 177 [2022-11-19 06:59:49,021 INFO L226 Difference]: Without dead ends: 177 [2022-11-19 06:59:49,021 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 [2022-11-19 06:59:49,022 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 [2022-11-19 06:59:49,022 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] [2022-11-19 06:59:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-19 06:59:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-19 06:59:49,028 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) [2022-11-19 06:59:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-11-19 06:59:49,029 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 7 [2022-11-19 06:59:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:49,030 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-11-19 06:59:49,030 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) [2022-11-19 06:59:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-11-19 06:59:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:59:49,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:49,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:59:49,032 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)] === [2022-11-19 06:59:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493349, now seen corresponding path program 1 times [2022-11-19 06:59:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:49,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466915017] [2022-11-19 06:59:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:49,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466915017] [2022-11-19 06:59:49,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466915017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:49,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:49,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291245098] [2022-11-19 06:59:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:59:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:59:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:59:49,166 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) [2022-11-19 06:59:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:49,355 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2022-11-19 06:59:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:59:49,357 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 [2022-11-19 06:59:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:49,358 INFO L225 Difference]: With dead ends: 176 [2022-11-19 06:59:49,358 INFO L226 Difference]: Without dead ends: 176 [2022-11-19 06:59:49,358 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 [2022-11-19 06:59:49,360 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-19 06:59:49,360 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] [2022-11-19 06:59:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-19 06:59:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-19 06:59:49,366 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) [2022-11-19 06:59:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2022-11-19 06:59:49,367 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 7 [2022-11-19 06:59:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:49,368 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2022-11-19 06:59:49,368 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) [2022-11-19 06:59:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2022-11-19 06:59:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:59:49,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:49,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:59:49,369 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)] === [2022-11-19 06:59:49,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash -365221685, now seen corresponding path program 1 times [2022-11-19 06:59:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:49,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530479015] [2022-11-19 06:59:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:49,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530479015] [2022-11-19 06:59:49,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530479015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:49,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:49,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:59:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114979977] [2022-11-19 06:59:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:59:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:59:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:59:49,652 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) [2022-11-19 06:59:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:50,056 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2022-11-19 06:59:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:59:50,057 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 [2022-11-19 06:59:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:50,058 INFO L225 Difference]: With dead ends: 175 [2022-11-19 06:59:50,058 INFO L226 Difference]: Without dead ends: 175 [2022-11-19 06:59:50,058 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 [2022-11-19 06:59:50,059 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 156 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:50,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 296 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:59:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-19 06:59:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-19 06:59:50,063 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) [2022-11-19 06:59:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2022-11-19 06:59:50,064 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 13 [2022-11-19 06:59:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:50,066 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2022-11-19 06:59:50,066 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) [2022-11-19 06:59:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2022-11-19 06:59:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:59:50,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:50,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:59:50,067 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)] === [2022-11-19 06:59:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -365221684, now seen corresponding path program 1 times [2022-11-19 06:59:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:50,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056408499] [2022-11-19 06:59:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:50,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056408499] [2022-11-19 06:59:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056408499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:50,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:59:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900140463] [2022-11-19 06:59:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 06:59:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 06:59:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:59:50,366 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) [2022-11-19 06:59:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:50,728 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2022-11-19 06:59:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:59:50,728 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 [2022-11-19 06:59:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:50,729 INFO L225 Difference]: With dead ends: 174 [2022-11-19 06:59:50,730 INFO L226 Difference]: Without dead ends: 174 [2022-11-19 06:59:50,730 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 [2022-11-19 06:59:50,730 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 332 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:50,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 131 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:59:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-19 06:59:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-19 06:59:50,735 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) [2022-11-19 06:59:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2022-11-19 06:59:50,736 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 13 [2022-11-19 06:59:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:50,736 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2022-11-19 06:59:50,736 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) [2022-11-19 06:59:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2022-11-19 06:59:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 06:59:50,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:50,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:50,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:59:50,738 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)] === [2022-11-19 06:59:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547253, now seen corresponding path program 1 times [2022-11-19 06:59:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:50,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620228299] [2022-11-19 06:59:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:50,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:59:51,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:51,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620228299] [2022-11-19 06:59:51,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620228299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:59:51,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592503090] [2022-11-19 06:59:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:51,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:51,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:59:51,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:59:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:51,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:59:51,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:51,769 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 06:59:51,770 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 [2022-11-19 06:59:51,818 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 [2022-11-19 06:59:51,836 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 [2022-11-19 06:59:51,847 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 [2022-11-19 06:59:52,958 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:59:52,959 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 [2022-11-19 06:59:53,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:59:53,092 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 [2022-11-19 06:59:53,110 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 [2022-11-19 06:59:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,178 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 06:59:53,178 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 [2022-11-19 06:59:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-19 06:59:53,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:53,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592503090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:59:53,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933224422] [2022-11-19 06:59:53,329 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-19 06:59:53,330 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:59:53,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:59:53,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:59:53,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:59:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,421 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 [2022-11-19 06:59:53,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,529 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 06:59:53,531 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 [2022-11-19 06:59:53,565 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 [2022-11-19 06:59:53,573 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 [2022-11-19 06:59:53,583 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 [2022-11-19 06:59:53,589 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 [2022-11-19 06:59:53,595 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 [2022-11-19 06:59:53,610 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 [2022-11-19 06:59:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,618 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 [2022-11-19 06:59:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,628 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 [2022-11-19 06:59:53,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,696 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 06:59:53,697 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 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 06:59:53,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:59:53,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,760 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 06:59:53,761 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 [2022-11-19 06:59:53,797 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 [2022-11-19 06:59:53,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,888 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 06:59:53,889 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 [2022-11-19 06:59:53,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:53,970 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 06:59:53,971 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 [2022-11-19 06:59:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,081 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 [2022-11-19 06:59:54,114 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 [2022-11-19 06:59:54,124 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 [2022-11-19 06:59:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,234 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 06:59:54,235 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 [2022-11-19 06:59:54,303 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 [2022-11-19 06:59:54,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,329 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 [2022-11-19 06:59:54,343 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 [2022-11-19 06:59:54,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,507 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 [2022-11-19 06:59:54,519 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 [2022-11-19 06:59:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,538 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 [2022-11-19 06:59:54,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,644 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 06:59:54,645 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 [2022-11-19 06:59:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,749 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 [2022-11-19 06:59:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,762 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 [2022-11-19 06:59:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,779 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 [2022-11-19 06:59:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,798 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 [2022-11-19 06:59:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:54,912 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 06:59:54,913 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 [2022-11-19 06:59:55,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,007 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 [2022-11-19 06:59:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,018 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 [2022-11-19 06:59:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,035 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 [2022-11-19 06:59:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,049 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 [2022-11-19 06:59:55,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,205 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 06:59:55,206 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 [2022-11-19 06:59:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:55,296 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 06:59:55,297 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 [2022-11-19 06:59:55,323 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 119 for LOIs [2022-11-19 06:59:56,378 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:10,071 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 214 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:12,077 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 [2022-11-19 07:00:12,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:00:12,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:12,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-19 07:00:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515798113] [2022-11-19 07:00:12,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:00:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:00:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=792, Unknown=3, NotChecked=180, Total=1122 [2022-11-19 07:00:12,079 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) [2022-11-19 07:00:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:13,054 INFO L93 Difference]: Finished difference Result 176 states and 200 transitions. [2022-11-19 07:00:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:00:13,055 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 [2022-11-19 07:00:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:13,057 INFO L225 Difference]: With dead ends: 176 [2022-11-19 07:00:13,058 INFO L226 Difference]: Without dead ends: 176 [2022-11-19 07:00:13,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=197, Invalid=1002, Unknown=3, NotChecked=204, Total=1406 [2022-11-19 07:00:13,059 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 164 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 642 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:13,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 482 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 686 Invalid, 0 Unknown, 642 Unchecked, 0.6s Time] [2022-11-19 07:00:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-19 07:00:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2022-11-19 07:00:13,065 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) [2022-11-19 07:00:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2022-11-19 07:00:13,066 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 25 [2022-11-19 07:00:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:13,066 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2022-11-19 07:00:13,066 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) [2022-11-19 07:00:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2022-11-19 07:00:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:00:13,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:13,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:13,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:13,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:00:13,273 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)] === [2022-11-19 07:00:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547254, now seen corresponding path program 1 times [2022-11-19 07:00:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:13,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901884317] [2022-11-19 07:00:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:00:14,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:14,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901884317] [2022-11-19 07:00:14,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901884317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:14,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:14,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:00:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972885813] [2022-11-19 07:00:14,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:14,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:00:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:00:14,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:14,215 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) [2022-11-19 07:00:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:14,975 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2022-11-19 07:00:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:00:14,976 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 [2022-11-19 07:00:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:14,978 INFO L225 Difference]: With dead ends: 302 [2022-11-19 07:00:14,978 INFO L226 Difference]: Without dead ends: 302 [2022-11-19 07:00:14,978 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 [2022-11-19 07:00:14,979 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 183 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:14,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 313 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:00:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-19 07:00:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 183. [2022-11-19 07:00:14,986 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) [2022-11-19 07:00:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2022-11-19 07:00:14,987 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 25 [2022-11-19 07:00:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:14,987 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2022-11-19 07:00:14,988 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) [2022-11-19 07:00:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2022-11-19 07:00:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:00:14,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:14,989 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] [2022-11-19 07:00:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:00:14,990 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)] === [2022-11-19 07:00:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash -70063145, now seen corresponding path program 1 times [2022-11-19 07:00:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:14,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26124572] [2022-11-19 07:00:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:00:15,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26124572] [2022-11-19 07:00:15,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26124572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040063558] [2022-11-19 07:00:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:15,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:15,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:15,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:15,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:00:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:16,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 07:00:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:16,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,201 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 [2022-11-19 07:00:16,209 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:00:16,209 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 23 treesize of output 19 [2022-11-19 07:00:16,238 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 [2022-11-19 07:00:16,247 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 [2022-11-19 07:00:16,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,282 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 [2022-11-19 07:00:16,314 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 [2022-11-19 07:00:16,322 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 [2022-11-19 07:00:16,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,358 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 [2022-11-19 07:00:16,380 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 [2022-11-19 07:00:16,388 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 [2022-11-19 07:00:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:16,424 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 [2022-11-19 07:00:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 18 not checked. [2022-11-19 07:00:16,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:18,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040063558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1559812881] [2022-11-19 07:00:18,588 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-19 07:00:18,588 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:18,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:18,588 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:18,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:18,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,639 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 [2022-11-19 07:00:18,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,730 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:18,730 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 [2022-11-19 07:00:18,748 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 [2022-11-19 07:00:18,752 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 [2022-11-19 07:00:18,763 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 [2022-11-19 07:00:18,768 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 [2022-11-19 07:00:18,774 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 [2022-11-19 07:00:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,785 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 [2022-11-19 07:00:18,792 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 [2022-11-19 07:00:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,799 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 [2022-11-19 07:00:18,816 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 [2022-11-19 07:00:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,853 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:18,854 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 [2022-11-19 07:00:18,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,899 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:18,900 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 [2022-11-19 07:00:18,921 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 [2022-11-19 07:00:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:18,966 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:00:18,966 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 [2022-11-19 07:00:18,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,064 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:00:19,065 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 [2022-11-19 07:00:19,168 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 [2022-11-19 07:00:19,177 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 [2022-11-19 07:00:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,197 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 [2022-11-19 07:00:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,290 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:19,291 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 [2022-11-19 07:00:19,336 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 [2022-11-19 07:00:19,347 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 [2022-11-19 07:00:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,370 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 [2022-11-19 07:00:19,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,450 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 [2022-11-19 07:00:19,467 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 [2022-11-19 07:00:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,479 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 [2022-11-19 07:00:19,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,550 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:19,550 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 [2022-11-19 07:00:19,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,597 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 [2022-11-19 07:00:19,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,610 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 [2022-11-19 07:00:19,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,622 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 [2022-11-19 07:00:19,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,634 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 [2022-11-19 07:00:19,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,705 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:19,706 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 [2022-11-19 07:00:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,770 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 [2022-11-19 07:00:19,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,781 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 [2022-11-19 07:00:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,793 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 [2022-11-19 07:00:19,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,805 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 [2022-11-19 07:00:19,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,921 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:19,921 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 [2022-11-19 07:00:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:19,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,021 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:20,021 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 [2022-11-19 07:00:20,287 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:00:20,288 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 [2022-11-19 07:00:20,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,733 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:20,734 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 [2022-11-19 07:00:20,755 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:00:20,763 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 [2022-11-19 07:00:20,767 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 [2022-11-19 07:00:20,779 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 [2022-11-19 07:00:20,794 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 [2022-11-19 07:00:20,799 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 11 treesize of output 7 [2022-11-19 07:00:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,814 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 [2022-11-19 07:00:20,822 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 [2022-11-19 07:00:20,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,831 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 [2022-11-19 07:00:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:20,879 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:20,879 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 [2022-11-19 07:00:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:20,919 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:20,919 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 [2022-11-19 07:00:20,931 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 [2022-11-19 07:00:20,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:20,967 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:00:20,967 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 [2022-11-19 07:00:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:20,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:20,994 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:00:20,995 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 [2022-11-19 07:00:21,016 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 [2022-11-19 07:00:21,020 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:24,236 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 [2022-11-19 07:00:24,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:00:24,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:24,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2022-11-19 07:00:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33065326] [2022-11-19 07:00:24,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 07:00:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:24,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 07:00:24,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=821, Unknown=3, NotChecked=180, Total=1122 [2022-11-19 07:00:24,239 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) [2022-11-19 07:00:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:25,249 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2022-11-19 07:00:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:25,250 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 [2022-11-19 07:00:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:25,251 INFO L225 Difference]: With dead ends: 182 [2022-11-19 07:00:25,251 INFO L226 Difference]: Without dead ends: 182 [2022-11-19 07:00:25,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=135, Invalid=930, Unknown=3, NotChecked=192, Total=1260 [2022-11-19 07:00:25,252 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 304 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 561 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:25,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 331 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 997 Invalid, 0 Unknown, 561 Unchecked, 0.9s Time] [2022-11-19 07:00:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-19 07:00:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2022-11-19 07:00:25,257 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) [2022-11-19 07:00:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2022-11-19 07:00:25,258 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 35 [2022-11-19 07:00:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:25,259 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2022-11-19 07:00:25,259 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) [2022-11-19 07:00:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2022-11-19 07:00:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:00:25,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:25,260 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] [2022-11-19 07:00:25,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:00:25,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:25,466 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)] === [2022-11-19 07:00:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492665, now seen corresponding path program 1 times [2022-11-19 07:00:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:25,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667751154] [2022-11-19 07:00:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:00:26,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:26,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667751154] [2022-11-19 07:00:26,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667751154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:26,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422527126] [2022-11-19 07:00:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:26,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:26,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:00:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:26,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-19 07:00:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:26,280 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-19 07:00:26,280 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 [2022-11-19 07:00:26,314 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 [2022-11-19 07:00:26,373 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:00:26,374 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 [2022-11-19 07:00:26,403 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 [2022-11-19 07:00:26,409 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 [2022-11-19 07:00:26,453 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:00:26,454 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 [2022-11-19 07:00:26,494 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 [2022-11-19 07:00:26,502 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 [2022-11-19 07:00:26,558 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:00:26,559 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 [2022-11-19 07:00:26,607 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 [2022-11-19 07:00:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 16 not checked. [2022-11-19 07:00:26,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:27,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422527126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:27,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1884954805] [2022-11-19 07:00:27,127 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-19 07:00:27,127 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:27,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:27,127 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:27,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,177 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 [2022-11-19 07:00:27,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,257 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:27,257 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 [2022-11-19 07:00:27,276 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 [2022-11-19 07:00:27,280 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 [2022-11-19 07:00:27,288 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 [2022-11-19 07:00:27,292 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 [2022-11-19 07:00:27,297 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 [2022-11-19 07:00:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,308 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 [2022-11-19 07:00:27,315 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 [2022-11-19 07:00:27,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,322 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 [2022-11-19 07:00:27,341 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 [2022-11-19 07:00:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,377 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:27,378 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 [2022-11-19 07:00:27,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,418 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:27,418 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 [2022-11-19 07:00:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,474 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:00:27,475 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 [2022-11-19 07:00:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,548 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:00:27,549 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 [2022-11-19 07:00:27,576 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 [2022-11-19 07:00:27,620 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 [2022-11-19 07:00:27,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,647 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 [2022-11-19 07:00:27,663 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 [2022-11-19 07:00:27,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,752 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:27,753 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 [2022-11-19 07:00:27,788 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 [2022-11-19 07:00:27,801 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 [2022-11-19 07:00:27,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,822 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 [2022-11-19 07:00:27,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,903 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 [2022-11-19 07:00:27,916 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 [2022-11-19 07:00:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,928 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 [2022-11-19 07:00:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:27,994 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:27,994 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 [2022-11-19 07:00:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,038 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 [2022-11-19 07:00:28,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,049 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 [2022-11-19 07:00:28,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,060 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 [2022-11-19 07:00:28,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,075 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 [2022-11-19 07:00:28,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,144 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:28,144 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 [2022-11-19 07:00:28,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,189 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 [2022-11-19 07:00:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,208 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 [2022-11-19 07:00:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,218 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 [2022-11-19 07:00:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,233 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 [2022-11-19 07:00:28,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,338 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 [2022-11-19 07:00:28,348 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 [2022-11-19 07:00:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,359 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 [2022-11-19 07:00:28,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,433 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:28,433 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 [2022-11-19 07:00:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,476 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 [2022-11-19 07:00:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,487 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 [2022-11-19 07:00:28,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,501 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 [2022-11-19 07:00:28,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,511 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 [2022-11-19 07:00:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,585 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:28,585 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 [2022-11-19 07:00:28,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,635 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 [2022-11-19 07:00:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,647 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 [2022-11-19 07:00:28,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,658 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 [2022-11-19 07:00:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,673 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 [2022-11-19 07:00:28,764 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 [2022-11-19 07:00:28,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,901 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:28,902 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 [2022-11-19 07:00:28,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:28,970 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:28,970 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 [2022-11-19 07:00:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,051 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:29,052 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 [2022-11-19 07:00:29,070 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:00:29,077 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 [2022-11-19 07:00:29,082 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 [2022-11-19 07:00:29,091 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 [2022-11-19 07:00:29,095 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 [2022-11-19 07:00:29,101 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 [2022-11-19 07:00:29,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,115 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 [2022-11-19 07:00:29,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,124 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 [2022-11-19 07:00:29,131 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 [2022-11-19 07:00:29,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:29,172 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:29,173 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 [2022-11-19 07:00:29,183 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 [2022-11-19 07:00:29,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:29,211 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:29,212 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 [2022-11-19 07:00:29,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:29,249 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:00:29,249 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 [2022-11-19 07:00:29,259 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 [2022-11-19 07:00:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:29,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:29,283 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:00:29,284 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 [2022-11-19 07:00:29,291 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:33,699 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 [2022-11-19 07:00:33,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:00:33,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:33,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-11-19 07:00:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981805970] [2022-11-19 07:00:33,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:00:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:00:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=985, Unknown=5, NotChecked=340, Total=1482 [2022-11-19 07:00:33,702 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) [2022-11-19 07:00:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:34,655 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2022-11-19 07:00:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:00:34,655 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 [2022-11-19 07:00:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:34,657 INFO L225 Difference]: With dead ends: 189 [2022-11-19 07:00:34,657 INFO L226 Difference]: Without dead ends: 189 [2022-11-19 07:00:34,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=213, Invalid=1442, Unknown=5, NotChecked=410, Total=2070 [2022-11-19 07:00:34,658 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 174 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1090 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:34,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 567 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1005 Invalid, 0 Unknown, 1090 Unchecked, 0.6s Time] [2022-11-19 07:00:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-19 07:00:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 165. [2022-11-19 07:00:34,663 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) [2022-11-19 07:00:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2022-11-19 07:00:34,664 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 38 [2022-11-19 07:00:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:34,664 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2022-11-19 07:00:34,665 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) [2022-11-19 07:00:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2022-11-19 07:00:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:00:34,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:34,666 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] [2022-11-19 07:00:34,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:00:34,866 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)] === [2022-11-19 07:00:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492664, now seen corresponding path program 1 times [2022-11-19 07:00:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048372299] [2022-11-19 07:00:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:00:35,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:35,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048372299] [2022-11-19 07:00:35,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048372299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:35,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:35,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:00:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730298676] [2022-11-19 07:00:35,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:35,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:35,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:00:35,275 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) [2022-11-19 07:00:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:35,880 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2022-11-19 07:00:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:00:35,881 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 [2022-11-19 07:00:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:35,882 INFO L225 Difference]: With dead ends: 183 [2022-11-19 07:00:35,882 INFO L226 Difference]: Without dead ends: 183 [2022-11-19 07:00:35,882 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 [2022-11-19 07:00:35,883 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 364 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:35,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 183 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:00:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-19 07:00:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2022-11-19 07:00:35,890 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) [2022-11-19 07:00:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2022-11-19 07:00:35,892 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 38 [2022-11-19 07:00:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:35,894 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2022-11-19 07:00:35,895 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) [2022-11-19 07:00:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2022-11-19 07:00:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:00:35,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:35,899 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] [2022-11-19 07:00:35,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:00:35,899 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)] === [2022-11-19 07:00:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -324632138, now seen corresponding path program 1 times [2022-11-19 07:00:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:35,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818539299] [2022-11-19 07:00:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:00:36,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:36,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818539299] [2022-11-19 07:00:36,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818539299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:36,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64942789] [2022-11-19 07:00:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:36,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:36,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:36,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:00:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:00:36,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:36,769 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-19 07:00:36,770 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 [2022-11-19 07:00:36,799 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 [2022-11-19 07:00:36,807 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 [2022-11-19 07:00:36,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:36,838 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 [2022-11-19 07:00:36,870 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 [2022-11-19 07:00:36,878 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 [2022-11-19 07:00:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:36,912 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 [2022-11-19 07:00:36,943 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 [2022-11-19 07:00:36,953 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 [2022-11-19 07:00:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:36,987 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 [2022-11-19 07:00:37,002 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 [2022-11-19 07:00:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 18 not checked. [2022-11-19 07:00:37,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:37,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64942789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:37,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109607004] [2022-11-19 07:00:37,149 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:00:37,149 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:37,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:37,150 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:37,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,193 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 [2022-11-19 07:00:37,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,274 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:37,275 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 [2022-11-19 07:00:37,293 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 [2022-11-19 07:00:37,297 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 [2022-11-19 07:00:37,304 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 [2022-11-19 07:00:37,308 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 [2022-11-19 07:00:37,313 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 [2022-11-19 07:00:37,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:00:37,331 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 [2022-11-19 07:00:37,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,338 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 [2022-11-19 07:00:37,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,384 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:37,384 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 [2022-11-19 07:00:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,427 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:37,427 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 [2022-11-19 07:00:37,440 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 [2022-11-19 07:00:37,456 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 [2022-11-19 07:00:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,520 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:00:37,520 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 [2022-11-19 07:00:37,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,589 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:00:37,589 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 [2022-11-19 07:00:37,629 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 [2022-11-19 07:00:37,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,651 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 [2022-11-19 07:00:37,662 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 [2022-11-19 07:00:37,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,744 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:37,744 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 [2022-11-19 07:00:37,784 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 [2022-11-19 07:00:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,804 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 [2022-11-19 07:00:37,813 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 [2022-11-19 07:00:37,892 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 [2022-11-19 07:00:37,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,902 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 [2022-11-19 07:00:37,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,913 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 [2022-11-19 07:00:37,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:37,984 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:37,985 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 [2022-11-19 07:00:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,029 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 [2022-11-19 07:00:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,039 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 [2022-11-19 07:00:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,051 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 [2022-11-19 07:00:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,061 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 [2022-11-19 07:00:38,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,130 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:38,130 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 [2022-11-19 07:00:38,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,175 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 [2022-11-19 07:00:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,186 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 [2022-11-19 07:00:38,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,198 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 [2022-11-19 07:00:38,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,210 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 [2022-11-19 07:00:38,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,288 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 [2022-11-19 07:00:38,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,302 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 [2022-11-19 07:00:38,312 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 [2022-11-19 07:00:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,385 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:38,385 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 [2022-11-19 07:00:38,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,435 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 [2022-11-19 07:00:38,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,447 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 [2022-11-19 07:00:38,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,458 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 [2022-11-19 07:00:38,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,472 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 [2022-11-19 07:00:38,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,542 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:38,542 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 [2022-11-19 07:00:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,587 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 [2022-11-19 07:00:38,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,600 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 [2022-11-19 07:00:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,610 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 [2022-11-19 07:00:38,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,622 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 [2022-11-19 07:00:38,691 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 [2022-11-19 07:00:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,860 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:38,860 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 [2022-11-19 07:00:38,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,933 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:38,934 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 [2022-11-19 07:00:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,018 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:39,018 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 [2022-11-19 07:00:39,038 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:00:39,045 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 [2022-11-19 07:00:39,050 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 [2022-11-19 07:00:39,059 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 [2022-11-19 07:00:39,064 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 [2022-11-19 07:00:39,069 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 [2022-11-19 07:00:39,112 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 [2022-11-19 07:00:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,120 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 [2022-11-19 07:00:39,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,127 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 [2022-11-19 07:00:39,150 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 [2022-11-19 07:00:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:39,178 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:39,178 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 [2022-11-19 07:00:39,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:39,216 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:39,216 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 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 07:00:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:39,253 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:00:39,253 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 [2022-11-19 07:00:39,265 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 [2022-11-19 07:00:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:39,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:39,286 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:00:39,286 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 [2022-11-19 07:00:39,292 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:43,888 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6116#(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 [2022-11-19 07:00:43,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:00:43,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:43,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-11-19 07:00:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081678090] [2022-11-19 07:00:43,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:00:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:00:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=822, Unknown=3, NotChecked=180, Total=1122 [2022-11-19 07:00:43,891 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) [2022-11-19 07:00:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:44,636 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2022-11-19 07:00:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:44,637 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 [2022-11-19 07:00:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:44,638 INFO L225 Difference]: With dead ends: 168 [2022-11-19 07:00:44,638 INFO L226 Difference]: Without dead ends: 168 [2022-11-19 07:00:44,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=132, Invalid=933, Unknown=3, NotChecked=192, Total=1260 [2022-11-19 07:00:44,639 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 242 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 534 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 309 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 794 Invalid, 0 Unknown, 534 Unchecked, 0.7s Time] [2022-11-19 07:00:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-19 07:00:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2022-11-19 07:00:44,643 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) [2022-11-19 07:00:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 181 transitions. [2022-11-19 07:00:44,645 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 181 transitions. Word has length 39 [2022-11-19 07:00:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:44,645 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 181 transitions. [2022-11-19 07:00:44,645 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) [2022-11-19 07:00:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 181 transitions. [2022-11-19 07:00:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:00:44,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:44,646 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] [2022-11-19 07:00:44,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:00:44,847 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)] === [2022-11-19 07:00:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -324632137, now seen corresponding path program 1 times [2022-11-19 07:00:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242690427] [2022-11-19 07:00:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:45,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242690427] [2022-11-19 07:00:45,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242690427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770800142] [2022-11-19 07:00:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:45,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:45,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:45,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:00:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:45,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:00:45,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:45,766 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 [2022-11-19 07:00:45,774 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 [2022-11-19 07:00:45,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:45,812 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 [2022-11-19 07:00:45,844 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 [2022-11-19 07:00:45,851 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 [2022-11-19 07:00:45,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:45,902 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 [2022-11-19 07:00:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-19 07:00:45,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770800142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001699284] [2022-11-19 07:00:48,069 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:00:48,069 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:48,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:48,069 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:48,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,120 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 [2022-11-19 07:00:48,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,208 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:48,208 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 [2022-11-19 07:00:48,226 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 [2022-11-19 07:00:48,231 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 [2022-11-19 07:00:48,237 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 [2022-11-19 07:00:48,242 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 [2022-11-19 07:00:48,247 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 [2022-11-19 07:00:48,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,260 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 [2022-11-19 07:00:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,269 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 [2022-11-19 07:00:48,275 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 [2022-11-19 07:00:48,289 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 [2022-11-19 07:00:48,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,323 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:48,324 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 [2022-11-19 07:00:48,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,365 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:48,365 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 [2022-11-19 07:00:48,395 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 [2022-11-19 07:00:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,439 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:00:48,439 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 [2022-11-19 07:00:48,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,521 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:00:48,521 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 [2022-11-19 07:00:48,568 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 [2022-11-19 07:00:48,576 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 [2022-11-19 07:00:48,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,595 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 [2022-11-19 07:00:48,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,669 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:48,669 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 [2022-11-19 07:00:48,706 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 [2022-11-19 07:00:48,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,725 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 [2022-11-19 07:00:48,733 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 [2022-11-19 07:00:48,801 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 [2022-11-19 07:00:48,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,813 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 [2022-11-19 07:00:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,830 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 [2022-11-19 07:00:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,898 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:48,899 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 [2022-11-19 07:00:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,939 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 [2022-11-19 07:00:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,952 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 [2022-11-19 07:00:48,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,961 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 [2022-11-19 07:00:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,972 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 [2022-11-19 07:00:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,040 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:49,040 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 [2022-11-19 07:00:49,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,082 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 [2022-11-19 07:00:49,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,092 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 [2022-11-19 07:00:49,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,103 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 [2022-11-19 07:00:49,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,113 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 [2022-11-19 07:00:49,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,243 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 [2022-11-19 07:00:49,257 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 [2022-11-19 07:00:49,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,270 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 [2022-11-19 07:00:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,337 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:49,337 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 [2022-11-19 07:00:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,379 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 [2022-11-19 07:00:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,391 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 [2022-11-19 07:00:49,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,401 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 [2022-11-19 07:00:49,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,415 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 [2022-11-19 07:00:49,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,484 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:49,484 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 [2022-11-19 07:00:49,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,532 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 [2022-11-19 07:00:49,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,543 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 [2022-11-19 07:00:49,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,553 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 [2022-11-19 07:00:49,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,575 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 [2022-11-19 07:00:49,653 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 [2022-11-19 07:00:49,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,814 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:49,815 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 [2022-11-19 07:00:49,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,884 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:49,885 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 [2022-11-19 07:00:49,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,963 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:49,963 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 [2022-11-19 07:00:49,981 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:00:49,987 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 [2022-11-19 07:00:49,992 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 [2022-11-19 07:00:50,003 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 [2022-11-19 07:00:50,008 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 [2022-11-19 07:00:50,013 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 [2022-11-19 07:00:50,025 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 [2022-11-19 07:00:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,032 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 [2022-11-19 07:00:50,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,041 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 [2022-11-19 07:00:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:50,084 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:50,085 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 [2022-11-19 07:00:50,095 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 [2022-11-19 07:00:50,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:50,123 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:00:50,123 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 [2022-11-19 07:00:50,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:50,161 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:00:50,161 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 [2022-11-19 07:00:50,172 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 [2022-11-19 07:00:50,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:50,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:50,193 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:00:50,193 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 [2022-11-19 07:00:50,199 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:54,902 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6618#(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 [2022-11-19 07:00:54,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:00:54,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-11-19 07:00:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690165702] [2022-11-19 07:00:54,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:54,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:00:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:00:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1045, Unknown=2, NotChecked=134, Total=1332 [2022-11-19 07:00:54,905 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) [2022-11-19 07:00:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:55,608 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2022-11-19 07:00:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:55,609 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 [2022-11-19 07:00:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:55,610 INFO L225 Difference]: With dead ends: 163 [2022-11-19 07:00:55,611 INFO L226 Difference]: Without dead ends: 163 [2022-11-19 07:00:55,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=181, Invalid=1231, Unknown=2, NotChecked=146, Total=1560 [2022-11-19 07:00:55,612 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 649 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:55,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 122 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 593 Invalid, 0 Unknown, 324 Unchecked, 0.6s Time] [2022-11-19 07:00:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-19 07:00:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2022-11-19 07:00:55,616 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) [2022-11-19 07:00:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 174 transitions. [2022-11-19 07:00:55,618 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 174 transitions. Word has length 39 [2022-11-19 07:00:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:55,618 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 174 transitions. [2022-11-19 07:00:55,618 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) [2022-11-19 07:00:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 174 transitions. [2022-11-19 07:00:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:00:55,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:55,626 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] [2022-11-19 07:00:55,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 07:00:55,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:55,832 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)] === [2022-11-19 07:00:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2086695555, now seen corresponding path program 1 times [2022-11-19 07:00:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:55,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584578621] [2022-11-19 07:00:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:55,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:00:57,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584578621] [2022-11-19 07:00:57,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584578621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911283391] [2022-11-19 07:00:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:57,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:57,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:57,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:57,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:00:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:57,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-19 07:00:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:57,747 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 [2022-11-19 07:00:57,941 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:00:57,941 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 [2022-11-19 07:00:58,000 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:00:58,000 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 [2022-11-19 07:00:58,229 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 [2022-11-19 07:00:58,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,271 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:00:58,271 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 [2022-11-19 07:00:58,294 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 [2022-11-19 07:00:58,374 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 [2022-11-19 07:00:58,478 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 [2022-11-19 07:00:58,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:00:58,496 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 [2022-11-19 07:00:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 07:00:58,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:58,565 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 [2022-11-19 07:00:58,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911283391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:58,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [268622766] [2022-11-19 07:00:58,738 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-19 07:00:58,739 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:58,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:58,739 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:58,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,776 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 [2022-11-19 07:00:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,849 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:58,849 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 [2022-11-19 07:00:58,864 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 [2022-11-19 07:00:58,869 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 [2022-11-19 07:00:58,878 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 15 treesize of output 1 [2022-11-19 07:00:58,883 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 [2022-11-19 07:00:58,889 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 11 treesize of output 7 [2022-11-19 07:00:58,898 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 [2022-11-19 07:00:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,905 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 [2022-11-19 07:00:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,912 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 [2022-11-19 07:00:58,952 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 [2022-11-19 07:00:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:58,988 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:58,988 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 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 07:00:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,027 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:00:59,030 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 [2022-11-19 07:00:59,047 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 [2022-11-19 07:00:59,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,109 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:00:59,110 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 [2022-11-19 07:00:59,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,178 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:00:59,178 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 [2022-11-19 07:00:59,225 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 [2022-11-19 07:00:59,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,247 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 [2022-11-19 07:00:59,255 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 [2022-11-19 07:00:59,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,327 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:00:59,327 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 [2022-11-19 07:00:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,373 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 [2022-11-19 07:00:59,385 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 [2022-11-19 07:00:59,393 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 [2022-11-19 07:00:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,471 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 [2022-11-19 07:00:59,483 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 [2022-11-19 07:00:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,499 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 [2022-11-19 07:00:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,567 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:59,567 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 [2022-11-19 07:00:59,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,604 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 [2022-11-19 07:00:59,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,616 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 [2022-11-19 07:00:59,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,627 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 [2022-11-19 07:00:59,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,640 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 [2022-11-19 07:00:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,704 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:59,704 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 [2022-11-19 07:00:59,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,767 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 [2022-11-19 07:00:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,781 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 [2022-11-19 07:00:59,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,794 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 [2022-11-19 07:00:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,809 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 [2022-11-19 07:00:59,881 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 [2022-11-19 07:00:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,896 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 [2022-11-19 07:00:59,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,908 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 [2022-11-19 07:00:59,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,973 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:00:59,973 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 [2022-11-19 07:01:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,013 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 [2022-11-19 07:01:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,023 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 [2022-11-19 07:01:00,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,035 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 [2022-11-19 07:01:00,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,045 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 [2022-11-19 07:01:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,110 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:00,111 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 [2022-11-19 07:01:00,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,160 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 11 treesize of output 7 [2022-11-19 07:01:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,170 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 [2022-11-19 07:01:00,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,183 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 [2022-11-19 07:01:00,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,196 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 [2022-11-19 07:01:00,267 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 [2022-11-19 07:01:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,457 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:01:00,457 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 [2022-11-19 07:01:00,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,532 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:00,532 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 [2022-11-19 07:01:00,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,605 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:00,606 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 [2022-11-19 07:01:00,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,693 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:00,694 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 [2022-11-19 07:01:00,710 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:01:00,716 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 [2022-11-19 07:01:00,721 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 [2022-11-19 07:01:00,730 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 [2022-11-19 07:01:00,735 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 [2022-11-19 07:01:00,740 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 [2022-11-19 07:01:00,752 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 [2022-11-19 07:01:00,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,759 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 [2022-11-19 07:01:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,767 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 [2022-11-19 07:01:00,788 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 [2022-11-19 07:01:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,816 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:00,816 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 [2022-11-19 07:01:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,847 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:00,848 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 [2022-11-19 07:01:00,869 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 [2022-11-19 07:01:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,888 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:01:00,889 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 [2022-11-19 07:01:00,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,913 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:01:00,914 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 [2022-11-19 07:01:00,922 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:01:00,970 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-19 07:01:00,982 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:07,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7155#(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 [2022-11-19 07:01:07,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:07,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:07,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2022-11-19 07:01:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938452244] [2022-11-19 07:01:07,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:07,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 07:01:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 07:01:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2728, Unknown=35, NotChecked=106, Total=3080 [2022-11-19 07:01:07,288 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) [2022-11-19 07:01:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:09,137 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2022-11-19 07:01:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 07:01:09,138 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 [2022-11-19 07:01:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:09,139 INFO L225 Difference]: With dead ends: 175 [2022-11-19 07:01:09,139 INFO L226 Difference]: Without dead ends: 175 [2022-11-19 07:01:09,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=322, Invalid=4198, Unknown=40, NotChecked=132, Total=4692 [2022-11-19 07:01:09,141 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 104 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 558 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:09,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1287 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1563 Invalid, 0 Unknown, 558 Unchecked, 1.1s Time] [2022-11-19 07:01:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-19 07:01:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 164. [2022-11-19 07:01:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.561904761904762) internal successors, (164), 148 states have internal predecessors, (164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:01:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 194 transitions. [2022-11-19 07:01:09,148 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 194 transitions. Word has length 44 [2022-11-19 07:01:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:09,148 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 194 transitions. [2022-11-19 07:01:09,148 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) [2022-11-19 07:01:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2022-11-19 07:01:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:01:09,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:09,149 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] [2022-11-19 07:01:09,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 07:01:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 07:01:09,356 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)] === [2022-11-19 07:01:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -446223091, now seen corresponding path program 1 times [2022-11-19 07:01:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:09,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435506694] [2022-11-19 07:01:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:12,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:12,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435506694] [2022-11-19 07:01:12,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435506694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:12,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185880368] [2022-11-19 07:01:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:12,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:12,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:12,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:12,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:01:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-19 07:01:12,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:12,311 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 [2022-11-19 07:01:12,389 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 [2022-11-19 07:01:12,583 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:01:12,584 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 [2022-11-19 07:01:12,649 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:12,649 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 [2022-11-19 07:01:12,848 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 [2022-11-19 07:01:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:12,891 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:01:12,892 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 [2022-11-19 07:01:12,905 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 [2022-11-19 07:01:12,995 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 [2022-11-19 07:01:13,053 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 [2022-11-19 07:01:13,292 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 [2022-11-19 07:01:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,339 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-19 07:01:13,339 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 [2022-11-19 07:01:13,421 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 [2022-11-19 07:01:13,506 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 [2022-11-19 07:01:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-19 07:01:13,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:13,581 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 [2022-11-19 07:01:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185880368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2073256265] [2022-11-19 07:01:13,812 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:01:13,812 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:13,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:13,813 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:13,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,846 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 [2022-11-19 07:01:13,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,929 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:13,930 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 [2022-11-19 07:01:13,952 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 [2022-11-19 07:01:13,956 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 [2022-11-19 07:01:13,962 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 [2022-11-19 07:01:13,966 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 [2022-11-19 07:01:13,971 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 [2022-11-19 07:01:13,980 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 [2022-11-19 07:01:13,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,986 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 [2022-11-19 07:01:13,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:13,993 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 21 treesize of output 20 [2022-11-19 07:01:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,035 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:14,036 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 [2022-11-19 07:01:14,045 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 [2022-11-19 07:01:14,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,079 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:14,079 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 [2022-11-19 07:01:14,096 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 [2022-11-19 07:01:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,137 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:01:14,138 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 [2022-11-19 07:01:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,200 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:01:14,200 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 [2022-11-19 07:01:14,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,261 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 [2022-11-19 07:01:14,274 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 [2022-11-19 07:01:14,285 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 [2022-11-19 07:01:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,357 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:14,358 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 [2022-11-19 07:01:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,411 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 [2022-11-19 07:01:14,421 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 [2022-11-19 07:01:14,432 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 [2022-11-19 07:01:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,490 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 [2022-11-19 07:01:14,502 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 [2022-11-19 07:01:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,531 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 [2022-11-19 07:01:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,595 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:14,596 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 [2022-11-19 07:01:14,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,649 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 [2022-11-19 07:01:14,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,660 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 [2022-11-19 07:01:14,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,669 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 [2022-11-19 07:01:14,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,682 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 [2022-11-19 07:01:14,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,738 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:14,738 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 [2022-11-19 07:01:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,777 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 [2022-11-19 07:01:14,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,789 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 [2022-11-19 07:01:14,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,804 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 [2022-11-19 07:01:14,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,814 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 15 treesize of output 11 [2022-11-19 07:01:14,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:01:14,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,898 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 [2022-11-19 07:01:14,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,914 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 [2022-11-19 07:01:14,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:14,986 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:14,987 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 [2022-11-19 07:01:15,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,031 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 [2022-11-19 07:01:15,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,043 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 [2022-11-19 07:01:15,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,053 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 [2022-11-19 07:01:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,064 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 [2022-11-19 07:01:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,133 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:15,134 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 [2022-11-19 07:01:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,172 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 [2022-11-19 07:01:15,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,185 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 [2022-11-19 07:01:15,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,195 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 [2022-11-19 07:01:15,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,208 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 [2022-11-19 07:01:15,290 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 [2022-11-19 07:01:15,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,437 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:01:15,437 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 [2022-11-19 07:01:15,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,514 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:15,514 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 [2022-11-19 07:01:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,584 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:15,584 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 [2022-11-19 07:01:15,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,665 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:15,665 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 [2022-11-19 07:01:15,687 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:01:15,694 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 [2022-11-19 07:01:15,699 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 [2022-11-19 07:01:15,708 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 [2022-11-19 07:01:15,713 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 [2022-11-19 07:01:15,718 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 [2022-11-19 07:01:15,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,733 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 [2022-11-19 07:01:15,740 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 [2022-11-19 07:01:15,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,749 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 [2022-11-19 07:01:15,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:15,795 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:15,796 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 [2022-11-19 07:01:15,806 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 [2022-11-19 07:01:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:15,836 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:15,836 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 [2022-11-19 07:01:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:15,872 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:01:15,873 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 [2022-11-19 07:01:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:15,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:15,900 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:01:15,900 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 [2022-11-19 07:01:15,933 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 [2022-11-19 07:01:15,937 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:01:16,039 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-19 07:01:16,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:23,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7766#(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 [2022-11-19 07:01:23,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:23,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:23,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-11-19 07:01:23,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364686559] [2022-11-19 07:01:23,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:23,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-19 07:01:23,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-19 07:01:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3997, Unknown=28, NotChecked=258, Total=4556 [2022-11-19 07:01:23,191 INFO L87 Difference]: Start difference. First operand 164 states and 194 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) [2022-11-19 07:01:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:26,367 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2022-11-19 07:01:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:01:26,368 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 [2022-11-19 07:01:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:26,369 INFO L225 Difference]: With dead ends: 199 [2022-11-19 07:01:26,369 INFO L226 Difference]: Without dead ends: 199 [2022-11-19 07:01:26,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=398, Invalid=5579, Unknown=37, NotChecked=306, Total=6320 [2022-11-19 07:01:26,373 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 214 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 662 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:26,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1519 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1914 Invalid, 0 Unknown, 662 Unchecked, 2.0s Time] [2022-11-19 07:01:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-19 07:01:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 188. [2022-11-19 07:01:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.536) internal successors, (192), 169 states have internal predecessors, (192), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:01:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 228 transitions. [2022-11-19 07:01:26,390 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 228 transitions. Word has length 46 [2022-11-19 07:01:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:26,390 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 228 transitions. [2022-11-19 07:01:26,391 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) [2022-11-19 07:01:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 228 transitions. [2022-11-19 07:01:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:01:26,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:26,392 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] [2022-11-19 07:01:26,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:26,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 07:01:26,599 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)] === [2022-11-19 07:01:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash -446234027, now seen corresponding path program 1 times [2022-11-19 07:01:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681653942] [2022-11-19 07:01:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:28,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681653942] [2022-11-19 07:01:28,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681653942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240030908] [2022-11-19 07:01:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:28,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:28,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:28,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:28,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:01:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:29,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-19 07:01:29,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:29,314 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 [2022-11-19 07:01:29,342 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-19 07:01:29,342 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 [2022-11-19 07:01:29,513 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:01:29,514 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 [2022-11-19 07:01:29,594 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:29,594 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 [2022-11-19 07:01:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:30,037 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:01:30,038 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 [2022-11-19 07:01:30,053 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-19 07:01:30,053 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 [2022-11-19 07:01:30,066 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 [2022-11-19 07:01:30,080 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 [2022-11-19 07:01:30,256 INFO L321 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2022-11-19 07:01:30,257 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 [2022-11-19 07:01:30,456 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 [2022-11-19 07:01:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:36,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:37,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240030908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53485080] [2022-11-19 07:01:37,218 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:01:37,218 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:37,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:37,219 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:37,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,258 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 [2022-11-19 07:01:37,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,340 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:37,340 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 [2022-11-19 07:01:37,358 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 [2022-11-19 07:01:37,362 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 [2022-11-19 07:01:37,368 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 [2022-11-19 07:01:37,373 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 [2022-11-19 07:01:37,378 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 [2022-11-19 07:01:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,389 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 [2022-11-19 07:01:37,396 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 [2022-11-19 07:01:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,403 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 [2022-11-19 07:01:37,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,447 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:37,447 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 32 treesize of output 42 [2022-11-19 07:01:37,457 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 [2022-11-19 07:01:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,496 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:37,496 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 [2022-11-19 07:01:37,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,562 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:01:37,563 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 [2022-11-19 07:01:37,582 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 [2022-11-19 07:01:37,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,624 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:01:37,624 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 [2022-11-19 07:01:37,655 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 [2022-11-19 07:01:37,665 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 [2022-11-19 07:01:37,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,684 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 [2022-11-19 07:01:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,745 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:37,745 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 [2022-11-19 07:01:37,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,794 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 [2022-11-19 07:01:37,802 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 [2022-11-19 07:01:37,809 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 [2022-11-19 07:01:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,879 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 [2022-11-19 07:01:37,892 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 [2022-11-19 07:01:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,904 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 [2022-11-19 07:01:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,964 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:37,965 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 [2022-11-19 07:01:38,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,004 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 [2022-11-19 07:01:38,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,015 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 [2022-11-19 07:01:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,026 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 [2022-11-19 07:01:38,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,039 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 [2022-11-19 07:01:38,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,116 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:38,116 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 [2022-11-19 07:01:38,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,152 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 [2022-11-19 07:01:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,164 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 [2022-11-19 07:01:38,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,174 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 11 treesize of output 7 [2022-11-19 07:01:38,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,184 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 [2022-11-19 07:01:38,258 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 [2022-11-19 07:01:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,268 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 [2022-11-19 07:01:38,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,280 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 15 treesize of output 15 [2022-11-19 07:01:38,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,339 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:38,339 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 [2022-11-19 07:01:38,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,379 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 [2022-11-19 07:01:38,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,391 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 [2022-11-19 07:01:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,403 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 [2022-11-19 07:01:38,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,416 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 [2022-11-19 07:01:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,480 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:38,481 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 [2022-11-19 07:01:38,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,525 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 [2022-11-19 07:01:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,536 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 [2022-11-19 07:01:38,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,548 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 [2022-11-19 07:01:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,560 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 [2022-11-19 07:01:38,627 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 [2022-11-19 07:01:38,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,787 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:01:38,787 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 [2022-11-19 07:01:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,854 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:38,854 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 [2022-11-19 07:01:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,917 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:38,917 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 [2022-11-19 07:01:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:38,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,000 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:39,001 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 [2022-11-19 07:01:39,019 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:01:39,032 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 [2022-11-19 07:01:39,037 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 [2022-11-19 07:01:39,046 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 [2022-11-19 07:01:39,052 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 [2022-11-19 07:01:39,056 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 [2022-11-19 07:01:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,069 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 [2022-11-19 07:01:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,077 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 21 treesize of output 20 [2022-11-19 07:01:39,084 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 [2022-11-19 07:01:39,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,134 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:39,134 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 [2022-11-19 07:01:39,145 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 [2022-11-19 07:01:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,172 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:39,173 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 [2022-11-19 07:01:39,195 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 [2022-11-19 07:01:39,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,218 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:01:39,218 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 44 treesize of output 42 [2022-11-19 07:01:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:39,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,250 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:01:39,250 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 38 [2022-11-19 07:01:39,258 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:01:39,359 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:46,761 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8423#(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 [2022-11-19 07:01:46,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:46,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:46,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 40 [2022-11-19 07:01:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58568400] [2022-11-19 07:01:46,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:46,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 07:01:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 07:01:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4259, Unknown=32, NotChecked=0, Total=4556 [2022-11-19 07:01:46,764 INFO L87 Difference]: Start difference. First operand 188 states and 228 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) [2022-11-19 07:01:49,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:49,084 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2022-11-19 07:01:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:01:49,087 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 [2022-11-19 07:01:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:49,088 INFO L225 Difference]: With dead ends: 196 [2022-11-19 07:01:49,088 INFO L226 Difference]: Without dead ends: 196 [2022-11-19 07:01:49,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=392, Invalid=5728, Unknown=42, NotChecked=0, Total=6162 [2022-11-19 07:01:49,090 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 61 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:49,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1503 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1860 Invalid, 0 Unknown, 643 Unchecked, 1.3s Time] [2022-11-19 07:01:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-19 07:01:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2022-11-19 07:01:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.528) internal successors, (191), 169 states have internal predecessors, (191), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:01:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 227 transitions. [2022-11-19 07:01:49,097 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 227 transitions. Word has length 46 [2022-11-19 07:01:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:49,098 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 227 transitions. [2022-11-19 07:01:49,098 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) [2022-11-19 07:01:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 227 transitions. [2022-11-19 07:01:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:01:49,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:49,099 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] [2022-11-19 07:01:49,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:49,305 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)] === [2022-11-19 07:01:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -446234026, now seen corresponding path program 1 times [2022-11-19 07:01:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:49,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964569542] [2022-11-19 07:01:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:01:51,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964569542] [2022-11-19 07:01:51,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964569542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389105845] [2022-11-19 07:01:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:51,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:51,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:01:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:52,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-19 07:01:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:52,322 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 [2022-11-19 07:01:52,329 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 [2022-11-19 07:01:52,552 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:01:52,552 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 [2022-11-19 07:01:52,572 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:01:52,572 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 [2022-11-19 07:01:52,659 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:52,659 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 [2022-11-19 07:01:52,666 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:52,666 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 [2022-11-19 07:01:52,997 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 [2022-11-19 07:01:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:53,047 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:01:53,048 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 [2022-11-19 07:01:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:53,105 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:01:53,105 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 [2022-11-19 07:01:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:53,113 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 [2022-11-19 07:01:53,130 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-19 07:01:53,130 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 [2022-11-19 07:01:53,148 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 [2022-11-19 07:01:53,159 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 [2022-11-19 07:01:53,189 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 [2022-11-19 07:01:53,342 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 [2022-11-19 07:01:53,476 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 [2022-11-19 07:01:53,479 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 [2022-11-19 07:01:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 07:01:53,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:53,748 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 [2022-11-19 07:01:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389105845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467173216] [2022-11-19 07:01:54,877 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:01:54,878 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:54,878 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:54,878 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:54,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,924 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 [2022-11-19 07:01:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:54,998 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:54,998 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 [2022-11-19 07:01:55,016 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 [2022-11-19 07:01:55,020 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 [2022-11-19 07:01:55,027 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 [2022-11-19 07:01:55,031 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 [2022-11-19 07:01:55,036 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 [2022-11-19 07:01:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,047 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 [2022-11-19 07:01:55,053 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 [2022-11-19 07:01:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,060 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 [2022-11-19 07:01:55,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,102 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:55,102 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 [2022-11-19 07:01:55,112 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 [2022-11-19 07:01:55,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,147 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:01:55,147 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 [2022-11-19 07:01:55,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,214 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:01:55,214 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 [2022-11-19 07:01:55,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,271 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:01:55,271 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 [2022-11-19 07:01:55,284 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 [2022-11-19 07:01:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,324 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 [2022-11-19 07:01:55,336 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 [2022-11-19 07:01:55,344 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 [2022-11-19 07:01:55,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,406 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:55,406 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 [2022-11-19 07:01:55,436 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 [2022-11-19 07:01:55,445 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 [2022-11-19 07:01:55,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,466 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 [2022-11-19 07:01:55,546 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 [2022-11-19 07:01:55,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,560 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 [2022-11-19 07:01:55,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,571 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 [2022-11-19 07:01:55,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,634 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:55,634 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 [2022-11-19 07:01:55,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,674 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 [2022-11-19 07:01:55,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,684 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 [2022-11-19 07:01:55,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,695 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 [2022-11-19 07:01:55,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,707 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 [2022-11-19 07:01:55,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,765 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:55,765 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 [2022-11-19 07:01:55,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,802 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 [2022-11-19 07:01:55,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,813 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 [2022-11-19 07:01:55,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,823 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 [2022-11-19 07:01:55,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,839 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 [2022-11-19 07:01:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,906 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 [2022-11-19 07:01:55,921 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 [2022-11-19 07:01:55,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,937 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 [2022-11-19 07:01:55,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:55,995 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:55,995 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 [2022-11-19 07:01:56,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,040 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 [2022-11-19 07:01:56,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,053 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 [2022-11-19 07:01:56,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,063 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 [2022-11-19 07:01:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,075 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 [2022-11-19 07:01:56,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,132 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:56,132 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 [2022-11-19 07:01:56,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,168 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 [2022-11-19 07:01:56,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,182 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 [2022-11-19 07:01:56,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,194 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 [2022-11-19 07:01:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,206 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 [2022-11-19 07:01:56,282 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 [2022-11-19 07:01:56,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,424 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:01:56,424 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 [2022-11-19 07:01:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,500 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:56,500 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 [2022-11-19 07:01:56,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,564 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:01:56,564 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 [2022-11-19 07:01:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,647 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:01:56,647 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 [2022-11-19 07:01:56,666 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:01:56,672 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 [2022-11-19 07:01:56,676 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 [2022-11-19 07:01:56,686 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 [2022-11-19 07:01:56,694 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 [2022-11-19 07:01:56,700 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 [2022-11-19 07:01:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,714 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 [2022-11-19 07:01:56,720 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 [2022-11-19 07:01:56,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,728 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 [2022-11-19 07:01:56,749 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 [2022-11-19 07:01:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:56,778 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:56,778 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 [2022-11-19 07:01:56,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:56,809 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:01:56,810 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 [2022-11-19 07:01:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:56,842 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:01:56,843 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 [2022-11-19 07:01:56,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:56,869 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:01:56,869 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 [2022-11-19 07:01:56,879 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 [2022-11-19 07:01:56,882 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:01:57,005 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:02:04,134 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9071#(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 [2022-11-19 07:02:04,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:02:04,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:02:04,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 32 [2022-11-19 07:02:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76709265] [2022-11-19 07:02:04,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:04,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 07:02:04,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 07:02:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3529, Unknown=4, NotChecked=120, Total=3906 [2022-11-19 07:02:04,138 INFO L87 Difference]: Start difference. First operand 188 states and 227 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) [2022-11-19 07:02:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:06,029 INFO L93 Difference]: Finished difference Result 205 states and 240 transitions. [2022-11-19 07:02:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:02:06,030 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 [2022-11-19 07:02:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:06,031 INFO L225 Difference]: With dead ends: 205 [2022-11-19 07:02:06,032 INFO L226 Difference]: Without dead ends: 205 [2022-11-19 07:02:06,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=371, Invalid=5028, Unknown=7, NotChecked=144, Total=5550 [2022-11-19 07:02:06,034 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 44 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:06,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1624 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1038 Invalid, 0 Unknown, 620 Unchecked, 0.7s Time] [2022-11-19 07:02:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-19 07:02:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2022-11-19 07:02:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 131 states have (on average 1.4885496183206106) internal successors, (195), 175 states have internal predecessors, (195), 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) [2022-11-19 07:02:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2022-11-19 07:02:06,045 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 46 [2022-11-19 07:02:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:06,045 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2022-11-19 07:02:06,045 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) [2022-11-19 07:02:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2022-11-19 07:02:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 07:02:06,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:06,046 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] [2022-11-19 07:02:06,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:06,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:06,253 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)] === [2022-11-19 07:02:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1158653529, now seen corresponding path program 1 times [2022-11-19 07:02:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:06,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558044167] [2022-11-19 07:02:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:02:06,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:06,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558044167] [2022-11-19 07:02:06,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558044167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:06,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474833550] [2022-11-19 07:02:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:06,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:06,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:06,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:02:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:07,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 07:02:07,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:07,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:07,210 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:02:07,210 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 [2022-11-19 07:02:07,221 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 [2022-11-19 07:02:07,253 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 [2022-11-19 07:02:07,260 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 [2022-11-19 07:02:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:07,292 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 [2022-11-19 07:02:07,346 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 [2022-11-19 07:02:07,353 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 [2022-11-19 07:02:07,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:07,386 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 [2022-11-19 07:02:07,443 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 [2022-11-19 07:02:07,451 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 [2022-11-19 07:02:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:07,482 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 [2022-11-19 07:02:07,519 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 [2022-11-19 07:02:07,527 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 [2022-11-19 07:02:07,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:07,570 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 [2022-11-19 07:02:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 36 not checked. [2022-11-19 07:02:07,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:13,883 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:13,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474833550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [146870326] [2022-11-19 07:02:13,885 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-19 07:02:13,885 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:13,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:13,886 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:13,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:02:13,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,919 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 [2022-11-19 07:02:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:13,992 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:13,993 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 [2022-11-19 07:02:14,007 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 [2022-11-19 07:02:14,011 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 [2022-11-19 07:02:14,017 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 [2022-11-19 07:02:14,022 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 [2022-11-19 07:02:14,026 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 [2022-11-19 07:02:14,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,036 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 [2022-11-19 07:02:14,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,044 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 [2022-11-19 07:02:14,051 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 [2022-11-19 07:02:14,066 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 [2022-11-19 07:02:14,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,098 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:02:14,099 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 [2022-11-19 07:02:14,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,137 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:02:14,138 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 [2022-11-19 07:02:14,154 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 [2022-11-19 07:02:14,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,212 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:02:14,212 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 [2022-11-19 07:02:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,265 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:02:14,265 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 [2022-11-19 07:02:14,300 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 [2022-11-19 07:02:14,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,321 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 [2022-11-19 07:02:14,330 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 [2022-11-19 07:02:14,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,398 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:14,398 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 [2022-11-19 07:02:14,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,441 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 [2022-11-19 07:02:14,452 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 [2022-11-19 07:02:14,460 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 [2022-11-19 07:02:14,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,520 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 [2022-11-19 07:02:14,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,535 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 [2022-11-19 07:02:14,552 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 [2022-11-19 07:02:14,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,612 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:14,613 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 [2022-11-19 07:02:14,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,656 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 [2022-11-19 07:02:14,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,669 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 [2022-11-19 07:02:14,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,681 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 [2022-11-19 07:02:14,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,693 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 [2022-11-19 07:02:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,765 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:14,766 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 [2022-11-19 07:02:14,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,801 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 [2022-11-19 07:02:14,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,811 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 [2022-11-19 07:02:14,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,823 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 [2022-11-19 07:02:14,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,837 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 [2022-11-19 07:02:14,902 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 [2022-11-19 07:02:14,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,916 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 15 treesize of output 15 [2022-11-19 07:02:14,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,929 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 [2022-11-19 07:02:14,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:14,992 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:14,992 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 [2022-11-19 07:02:15,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,036 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 [2022-11-19 07:02:15,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,048 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 15 treesize of output 11 [2022-11-19 07:02:15,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,058 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 [2022-11-19 07:02:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,069 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 [2022-11-19 07:02:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,131 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:15,132 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 [2022-11-19 07:02:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,170 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 [2022-11-19 07:02:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,183 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 [2022-11-19 07:02:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,193 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 [2022-11-19 07:02:15,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,204 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 [2022-11-19 07:02:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,306 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:15,306 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 [2022-11-19 07:02:15,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:15,374 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:15,375 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 [2022-11-19 07:02:15,475 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 [2022-11-19 07:02:15,699 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:02:15,699 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 [2022-11-19 07:02:16,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,052 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:16,052 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 [2022-11-19 07:02:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,131 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:16,131 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 [2022-11-19 07:02:16,155 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:02:16,199 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 [2022-11-19 07:02:16,223 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 [2022-11-19 07:02:16,258 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 [2022-11-19 07:02:16,298 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 [2022-11-19 07:02:16,322 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 [2022-11-19 07:02:16,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,375 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 [2022-11-19 07:02:16,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,404 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 [2022-11-19 07:02:16,418 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 [2022-11-19 07:02:16,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:16,550 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:02:16,550 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 [2022-11-19 07:02:16,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:16,608 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:02:16,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 07:02:16,653 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 [2022-11-19 07:02:16,744 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 [2022-11-19 07:02:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:16,799 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:02:16,800 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 [2022-11-19 07:02:16,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:16,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:16,849 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:02:16,849 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 [2022-11-19 07:02:16,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:02:22,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9699#(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 [2022-11-19 07:02:22,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:02:22,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:02:22,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-19 07:02:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227807944] [2022-11-19 07:02:22,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:22,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 07:02:22,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 07:02:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=999, Unknown=4, NotChecked=268, Total=1406 [2022-11-19 07:02:22,090 INFO L87 Difference]: Start difference. First operand 195 states and 231 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) [2022-11-19 07:02:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:22,988 INFO L93 Difference]: Finished difference Result 205 states and 243 transitions. [2022-11-19 07:02:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:02:22,988 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 [2022-11-19 07:02:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:22,989 INFO L225 Difference]: With dead ends: 205 [2022-11-19 07:02:22,990 INFO L226 Difference]: Without dead ends: 205 [2022-11-19 07:02:22,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=188, Invalid=1306, Unknown=4, NotChecked=308, Total=1806 [2022-11-19 07:02:22,991 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 423 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 652 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:22,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 208 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 864 Invalid, 0 Unknown, 652 Unchecked, 0.7s Time] [2022-11-19 07:02:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-19 07:02:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2022-11-19 07:02:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 174 states have internal predecessors, (194), 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) [2022-11-19 07:02:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2022-11-19 07:02:23,001 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 48 [2022-11-19 07:02:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:23,001 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2022-11-19 07:02:23,001 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) [2022-11-19 07:02:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2022-11-19 07:02:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 07:02:23,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:23,002 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] [2022-11-19 07:02:23,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:23,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-19 07:02:23,207 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)] === [2022-11-19 07:02:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:23,207 INFO L85 PathProgramCache]: Analyzing trace with hash 362497408, now seen corresponding path program 1 times [2022-11-19 07:02:23,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:23,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567756560] [2022-11-19 07:02:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:23,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:27,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567756560] [2022-11-19 07:02:27,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567756560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442996272] [2022-11-19 07:02:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:27,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:27,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:27,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:02:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:27,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-19 07:02:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:27,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:02:27,734 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:02:27,734 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 [2022-11-19 07:02:27,740 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 6 treesize of output 4 [2022-11-19 07:02:27,818 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 [2022-11-19 07:02:28,337 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 [2022-11-19 07:02:28,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:28,465 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 [2022-11-19 07:02:28,471 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 [2022-11-19 07:02:28,486 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 [2022-11-19 07:02:28,830 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:02:28,830 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 [2022-11-19 07:02:28,865 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:02:28,866 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 [2022-11-19 07:02:29,241 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 [2022-11-19 07:02:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:29,317 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-19 07:02:29,317 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 [2022-11-19 07:02:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:29,357 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:02:29,357 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 [2022-11-19 07:02:29,378 INFO L321 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2022-11-19 07:02:29,378 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 [2022-11-19 07:02:29,390 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 [2022-11-19 07:02:29,400 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 [2022-11-19 07:02:29,449 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 [2022-11-19 07:02:29,730 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 [2022-11-19 07:02:30,086 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 [2022-11-19 07:02:30,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:02:30,683 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 [2022-11-19 07:02:30,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:30,696 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-19 07:02:30,696 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 [2022-11-19 07:02:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 07:02:30,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:31,106 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-19 07:02:31,106 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 [2022-11-19 07:02:31,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442996272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:31,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814050654] [2022-11-19 07:02:31,465 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 07:02:31,465 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:31,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:31,465 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:31,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:02:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,503 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 [2022-11-19 07:02:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,592 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:31,592 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 [2022-11-19 07:02:31,607 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 [2022-11-19 07:02:31,611 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 [2022-11-19 07:02:31,617 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 [2022-11-19 07:02:31,621 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 [2022-11-19 07:02:31,626 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 [2022-11-19 07:02:31,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,637 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 [2022-11-19 07:02:31,643 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 [2022-11-19 07:02:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,649 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 [2022-11-19 07:02:31,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,691 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:02:31,691 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 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 07:02:31,701 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 [2022-11-19 07:02:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,736 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:02:31,737 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 [2022-11-19 07:02:31,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,803 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:02:31,803 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 [2022-11-19 07:02:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,859 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:02:31,860 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 [2022-11-19 07:02:31,872 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 [2022-11-19 07:02:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,917 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 [2022-11-19 07:02:31,926 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 [2022-11-19 07:02:31,935 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 [2022-11-19 07:02:31,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:31,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,009 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:32,009 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 [2022-11-19 07:02:32,043 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 [2022-11-19 07:02:32,055 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 [2022-11-19 07:02:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,076 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 [2022-11-19 07:02:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,148 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 [2022-11-19 07:02:32,158 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 [2022-11-19 07:02:32,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,171 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 [2022-11-19 07:02:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,239 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:32,240 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 [2022-11-19 07:02:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,281 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 [2022-11-19 07:02:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,297 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 [2022-11-19 07:02:32,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,307 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 [2022-11-19 07:02:32,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,319 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 [2022-11-19 07:02:32,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,384 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:32,384 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 [2022-11-19 07:02:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,425 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 [2022-11-19 07:02:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,436 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 [2022-11-19 07:02:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,447 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 [2022-11-19 07:02:32,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,459 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 [2022-11-19 07:02:32,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,562 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 [2022-11-19 07:02:32,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,575 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 [2022-11-19 07:02:32,586 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 [2022-11-19 07:02:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,654 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:32,654 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 [2022-11-19 07:02:32,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,694 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 [2022-11-19 07:02:32,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,708 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 [2022-11-19 07:02:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,718 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 [2022-11-19 07:02:32,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,728 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 [2022-11-19 07:02:32,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,796 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:32,796 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 [2022-11-19 07:02:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,837 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 [2022-11-19 07:02:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,849 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 [2022-11-19 07:02:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,859 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 [2022-11-19 07:02:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,869 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 [2022-11-19 07:02:32,935 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 [2022-11-19 07:02:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,071 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:02:33,071 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 [2022-11-19 07:02:33,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,135 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:33,135 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 [2022-11-19 07:02:33,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,232 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:02:33,232 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 [2022-11-19 07:02:33,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,317 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:02:33,317 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 [2022-11-19 07:02:33,334 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:02:33,341 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 [2022-11-19 07:02:33,346 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 [2022-11-19 07:02:33,355 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 [2022-11-19 07:02:33,360 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 [2022-11-19 07:02:33,366 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 [2022-11-19 07:02:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,381 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 [2022-11-19 07:02:33,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,390 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 [2022-11-19 07:02:33,398 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 [2022-11-19 07:02:33,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:33,442 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:02:33,442 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 [2022-11-19 07:02:33,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:33,474 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:02:33,475 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 [2022-11-19 07:02:33,487 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 [2022-11-19 07:02:33,507 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 [2022-11-19 07:02:33,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:33,528 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:02:33,528 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 [2022-11-19 07:02:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:33,554 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:02:33,555 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 [2022-11-19 07:02:33,562 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:02:33,842 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 103 for LOIs [2022-11-19 07:02:33,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:02:44,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10387#(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 [2022-11-19 07:02:44,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:02:44,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:02:44,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 54 [2022-11-19 07:02:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676622607] [2022-11-19 07:02:44,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-19 07:02:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-19 07:02:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=7157, Unknown=19, NotChecked=170, Total=7656 [2022-11-19 07:02:44,602 INFO L87 Difference]: Start difference. First operand 194 states and 230 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) [2022-11-19 07:02:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:48,534 INFO L93 Difference]: Finished difference Result 220 states and 258 transitions. [2022-11-19 07:02:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:02:48,535 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 [2022-11-19 07:02:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:48,536 INFO L225 Difference]: With dead ends: 220 [2022-11-19 07:02:48,536 INFO L226 Difference]: Without dead ends: 220 [2022-11-19 07:02:48,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2953 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=446, Invalid=9838, Unknown=22, NotChecked=200, Total=10506 [2022-11-19 07:02:48,538 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 124 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 743 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:48,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1878 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2588 Invalid, 0 Unknown, 743 Unchecked, 2.3s Time] [2022-11-19 07:02:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-19 07:02:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 210. [2022-11-19 07:02:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.4413793103448276) internal successors, (209), 188 states have internal predecessors, (209), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:02:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 245 transitions. [2022-11-19 07:02:48,546 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 245 transitions. Word has length 50 [2022-11-19 07:02:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:48,546 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 245 transitions. [2022-11-19 07:02:48,547 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) [2022-11-19 07:02:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 245 transitions. [2022-11-19 07:02:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 07:02:48,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:48,548 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] [2022-11-19 07:02:48,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:48,754 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)] === [2022-11-19 07:02:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash 362487338, now seen corresponding path program 1 times [2022-11-19 07:02:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:48,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670058225] [2022-11-19 07:02:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:55,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670058225] [2022-11-19 07:02:55,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670058225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679520097] [2022-11-19 07:02:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:55,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:55,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:02:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:56,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 187 conjunts are in the unsatisfiable core [2022-11-19 07:02:56,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:56,106 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 [2022-11-19 07:02:56,375 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 [2022-11-19 07:02:56,377 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 [2022-11-19 07:02:56,823 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:02:56,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-19 07:02:56,854 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:02:56,854 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 [2022-11-19 07:02:56,997 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:02:56,997 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 [2022-11-19 07:02:57,003 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:02:57,004 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 [2022-11-19 07:02:59,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,120 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-19 07:02:59,120 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 [2022-11-19 07:02:59,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:59,152 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 07:02:59,152 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 [2022-11-19 07:02:59,159 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 [2022-11-19 07:02:59,172 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 [2022-11-19 07:02:59,180 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 [2022-11-19 07:02:59,189 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 [2022-11-19 07:02:59,238 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 [2022-11-19 07:02:59,910 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-19 07:02:59,910 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 [2022-11-19 07:02:59,943 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-19 07:02:59,944 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 [2022-11-19 07:03:00,203 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-19 07:03:00,203 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 [2022-11-19 07:03:00,211 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 [2022-11-19 07:03:00,225 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-19 07:03:00,225 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 [2022-11-19 07:03:00,810 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 [2022-11-19 07:03:00,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:00,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:00,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:00,956 INFO L321 Elim1Store]: treesize reduction 74, result has 35.1 percent of original size [2022-11-19 07:03:00,956 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 [2022-11-19 07:03:00,979 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-19 07:03:00,979 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 [2022-11-19 07:03:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:00,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:00,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:01,055 INFO L321 Elim1Store]: treesize reduction 70, result has 37.5 percent of original size [2022-11-19 07:03:01,055 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 [2022-11-19 07:03:01,092 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 [2022-11-19 07:03:01,145 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 [2022-11-19 07:03:01,193 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 [2022-11-19 07:03:01,267 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 [2022-11-19 07:03:01,772 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 [2022-11-19 07:03:02,598 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-19 07:03:02,599 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 [2022-11-19 07:03:03,411 INFO L321 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2022-11-19 07:03:03,412 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 [2022-11-19 07:03:03,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:03,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:03,427 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:03:03,427 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 [2022-11-19 07:03:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 07:03:03,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:04,310 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:04,310 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 [2022-11-19 07:03:04,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679520097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:04,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940602276] [2022-11-19 07:03:04,990 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 07:03:04,990 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:03:04,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:03:04,990 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:03:04,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:03:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,029 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 [2022-11-19 07:03:05,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,103 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:05,103 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 [2022-11-19 07:03:05,119 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 [2022-11-19 07:03:05,123 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 [2022-11-19 07:03:05,130 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 [2022-11-19 07:03:05,134 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 [2022-11-19 07:03:05,139 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 [2022-11-19 07:03:05,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,149 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 [2022-11-19 07:03:05,155 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 [2022-11-19 07:03:05,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,162 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 [2022-11-19 07:03:05,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,221 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:03:05,221 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 [2022-11-19 07:03:05,231 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 [2022-11-19 07:03:05,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,269 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:03:05,269 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 [2022-11-19 07:03:05,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,335 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:03:05,335 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 [2022-11-19 07:03:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,389 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:03:05,389 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 [2022-11-19 07:03:05,404 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 [2022-11-19 07:03:05,431 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 [2022-11-19 07:03:05,440 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 [2022-11-19 07:03:05,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,461 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 [2022-11-19 07:03:05,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,531 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:05,531 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 [2022-11-19 07:03:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,580 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 [2022-11-19 07:03:05,589 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 [2022-11-19 07:03:05,598 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 [2022-11-19 07:03:05,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,654 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 [2022-11-19 07:03:05,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,666 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 [2022-11-19 07:03:05,679 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 [2022-11-19 07:03:05,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,743 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:05,743 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 [2022-11-19 07:03:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,786 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 11 treesize of output 7 [2022-11-19 07:03:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,799 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 [2022-11-19 07:03:05,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,811 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 [2022-11-19 07:03:05,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,822 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 [2022-11-19 07:03:05,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,891 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:05,892 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 [2022-11-19 07:03:05,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,935 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 [2022-11-19 07:03:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,947 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 [2022-11-19 07:03:05,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,958 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 [2022-11-19 07:03:05,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:05,972 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 [2022-11-19 07:03:06,049 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 [2022-11-19 07:03:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,060 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 [2022-11-19 07:03:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,074 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 [2022-11-19 07:03:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,136 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:06,136 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 [2022-11-19 07:03:06,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,179 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 [2022-11-19 07:03:06,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,198 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 [2022-11-19 07:03:06,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,211 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 [2022-11-19 07:03:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,222 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 [2022-11-19 07:03:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,300 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:06,300 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 [2022-11-19 07:03:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,340 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 [2022-11-19 07:03:06,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,350 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 11 treesize of output 7 [2022-11-19 07:03:06,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,360 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 [2022-11-19 07:03:06,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,371 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 [2022-11-19 07:03:06,437 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 [2022-11-19 07:03:06,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,585 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:03:06,585 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 [2022-11-19 07:03:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,654 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:06,655 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 [2022-11-19 07:03:06,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,724 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:06,724 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 [2022-11-19 07:03:06,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,800 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:06,800 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 [2022-11-19 07:03:06,817 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:03:06,823 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 [2022-11-19 07:03:06,828 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 [2022-11-19 07:03:06,837 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 [2022-11-19 07:03:06,842 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 [2022-11-19 07:03:06,848 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 [2022-11-19 07:03:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,862 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 [2022-11-19 07:03:06,869 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 [2022-11-19 07:03:06,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,876 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 [2022-11-19 07:03:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:06,920 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:03:06,920 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 [2022-11-19 07:03:06,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:06,953 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:03:06,953 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 [2022-11-19 07:03:06,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:03:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:06,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:06,997 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:03:06,998 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 [2022-11-19 07:03:07,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:07,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:07,024 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:03:07,024 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 [2022-11-19 07:03:07,040 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 [2022-11-19 07:03:07,044 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:03:07,248 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:19,062 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11147#(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 [2022-11-19 07:03:19,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:03:19,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:03:19,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2022-11-19 07:03:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852365348] [2022-11-19 07:03:19,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-19 07:03:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-19 07:03:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=8979, Unknown=24, NotChecked=190, Total=9506 [2022-11-19 07:03:19,065 INFO L87 Difference]: Start difference. First operand 210 states and 245 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) [2022-11-19 07:03:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:30,290 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2022-11-19 07:03:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-19 07:03:30,290 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 [2022-11-19 07:03:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:30,291 INFO L225 Difference]: With dead ends: 246 [2022-11-19 07:03:30,292 INFO L226 Difference]: Without dead ends: 246 [2022-11-19 07:03:30,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3901 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=587, Invalid=15644, Unknown=29, NotChecked=252, Total=16512 [2022-11-19 07:03:30,294 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 183 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1432 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:30,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2639 Invalid, 5164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3611 Invalid, 0 Unknown, 1432 Unchecked, 3.9s Time] [2022-11-19 07:03:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-19 07:03:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 205. [2022-11-19 07:03:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 183 states have internal predecessors, (199), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:03:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2022-11-19 07:03:30,302 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 50 [2022-11-19 07:03:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:30,303 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2022-11-19 07:03:30,303 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) [2022-11-19 07:03:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2022-11-19 07:03:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 07:03:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:30,304 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] [2022-11-19 07:03:30,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-19 07:03:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:30,511 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)] === [2022-11-19 07:03:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686533, now seen corresponding path program 1 times [2022-11-19 07:03:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967584358] [2022-11-19 07:03:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:03:30,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:30,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967584358] [2022-11-19 07:03:30,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967584358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:30,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:30,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:03:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072767265] [2022-11-19 07:03:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:03:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:03:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:03:30,652 INFO L87 Difference]: Start difference. First operand 205 states and 235 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) [2022-11-19 07:03:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:31,087 INFO L93 Difference]: Finished difference Result 263 states and 302 transitions. [2022-11-19 07:03:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:03:31,088 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 [2022-11-19 07:03:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:31,089 INFO L225 Difference]: With dead ends: 263 [2022-11-19 07:03:31,089 INFO L226 Difference]: Without dead ends: 263 [2022-11-19 07:03:31,089 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 [2022-11-19 07:03:31,090 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 80 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:31,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 596 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:03:31,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-19 07:03:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 204. [2022-11-19 07:03:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 182 states have internal predecessors, (198), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:03:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 234 transitions. [2022-11-19 07:03:31,104 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 234 transitions. Word has length 51 [2022-11-19 07:03:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:31,105 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 234 transitions. [2022-11-19 07:03:31,105 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) [2022-11-19 07:03:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 234 transitions. [2022-11-19 07:03:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 07:03:31,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:31,106 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] [2022-11-19 07:03:31,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-19 07:03:31,107 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)] === [2022-11-19 07:03:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686532, now seen corresponding path program 1 times [2022-11-19 07:03:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:31,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157569910] [2022-11-19 07:03:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:31,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:03:33,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:33,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157569910] [2022-11-19 07:03:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157569910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845726925] [2022-11-19 07:03:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:33,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:33,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:33,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:33,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:03:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:34,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-19 07:03:34,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:34,449 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 [2022-11-19 07:03:34,454 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 [2022-11-19 07:03:34,735 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:03:34,736 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 [2022-11-19 07:03:34,779 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:03:34,779 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 [2022-11-19 07:03:34,867 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:34,867 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 [2022-11-19 07:03:34,873 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:34,874 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 [2022-11-19 07:03:35,248 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 [2022-11-19 07:03:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:35,300 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:03:35,300 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 [2022-11-19 07:03:35,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:35,340 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:03:35,340 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 [2022-11-19 07:03:35,354 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-19 07:03:35,354 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 [2022-11-19 07:03:35,361 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 [2022-11-19 07:03:35,374 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 [2022-11-19 07:03:35,398 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 [2022-11-19 07:03:35,522 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 [2022-11-19 07:03:35,697 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:03:35,697 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 [2022-11-19 07:03:36,163 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 [2022-11-19 07:03:36,164 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 [2022-11-19 07:03:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 07:03:36,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:41,278 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 [2022-11-19 07:03:41,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845726925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:41,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994892174] [2022-11-19 07:03:41,692 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-19 07:03:41,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:03:41,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:03:41,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:03:41,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:03:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,751 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 [2022-11-19 07:03:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,832 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:41,832 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 [2022-11-19 07:03:41,847 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 [2022-11-19 07:03:41,851 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 [2022-11-19 07:03:41,857 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 [2022-11-19 07:03:41,862 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 15 treesize of output 1 [2022-11-19 07:03:41,867 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 [2022-11-19 07:03:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,877 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 21 treesize of output 20 [2022-11-19 07:03:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,885 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 [2022-11-19 07:03:41,892 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 [2022-11-19 07:03:41,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,936 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:03:41,936 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 [2022-11-19 07:03:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:41,977 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:03:41,978 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 [2022-11-19 07:03:41,988 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 [2022-11-19 07:03:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,054 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:03:42,054 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 [2022-11-19 07:03:42,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,109 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:03:42,109 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 [2022-11-19 07:03:42,121 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 [2022-11-19 07:03:42,161 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 [2022-11-19 07:03:42,170 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 [2022-11-19 07:03:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,190 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 [2022-11-19 07:03:42,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,268 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:42,268 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 [2022-11-19 07:03:42,304 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 [2022-11-19 07:03:42,312 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 [2022-11-19 07:03:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,333 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 [2022-11-19 07:03:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,399 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 [2022-11-19 07:03:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,413 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 [2022-11-19 07:03:42,428 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 [2022-11-19 07:03:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,487 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:42,487 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 [2022-11-19 07:03:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,526 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 [2022-11-19 07:03:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,541 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 [2022-11-19 07:03:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,551 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 [2022-11-19 07:03:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,563 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 [2022-11-19 07:03:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,622 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:42,623 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 [2022-11-19 07:03:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,663 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 [2022-11-19 07:03:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,676 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 [2022-11-19 07:03:42,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,689 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 [2022-11-19 07:03:42,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,706 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 [2022-11-19 07:03:42,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,788 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 [2022-11-19 07:03:42,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,802 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 [2022-11-19 07:03:42,817 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 [2022-11-19 07:03:42,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,877 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:42,877 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 [2022-11-19 07:03:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,925 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 [2022-11-19 07:03:42,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,937 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 [2022-11-19 07:03:42,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,947 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 [2022-11-19 07:03:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:42,963 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 [2022-11-19 07:03:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,028 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:43,028 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 [2022-11-19 07:03:43,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,070 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 [2022-11-19 07:03:43,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,080 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 [2022-11-19 07:03:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,091 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 [2022-11-19 07:03:43,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,101 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 [2022-11-19 07:03:43,173 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 [2022-11-19 07:03:43,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,326 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:03:43,327 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 [2022-11-19 07:03:43,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,476 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:03:43,476 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 [2022-11-19 07:03:43,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,667 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:03:43,668 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 [2022-11-19 07:03:43,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,748 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:43,749 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 [2022-11-19 07:03:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,825 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:03:43,825 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 [2022-11-19 07:03:43,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,920 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:03:43,921 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 [2022-11-19 07:03:43,941 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:03:43,947 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 [2022-11-19 07:03:43,952 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 [2022-11-19 07:03:43,965 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 [2022-11-19 07:03:43,971 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 [2022-11-19 07:03:43,977 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 [2022-11-19 07:03:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:43,991 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 [2022-11-19 07:03:44,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:44,000 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 [2022-11-19 07:03:44,008 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 [2022-11-19 07:03:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:44,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:44,056 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:03:44,057 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 [2022-11-19 07:03:44,068 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 [2022-11-19 07:03:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:44,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:44,103 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:03:44,103 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 [2022-11-19 07:03:44,125 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 [2022-11-19 07:03:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:44,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:44,147 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:03:44,148 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 [2022-11-19 07:03:44,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:44,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:44,175 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:03:44,175 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 [2022-11-19 07:03:44,181 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:03:44,299 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:53,707 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12425#(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 [2022-11-19 07:03:53,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:03:53,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:03:53,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 42 [2022-11-19 07:03:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190689340] [2022-11-19 07:03:53,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-19 07:03:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-19 07:03:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=5807, Unknown=5, NotChecked=154, Total=6320 [2022-11-19 07:03:53,709 INFO L87 Difference]: Start difference. First operand 204 states and 234 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) [2022-11-19 07:04:00,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:00,482 INFO L93 Difference]: Finished difference Result 303 states and 345 transitions. [2022-11-19 07:04:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 07:04:00,483 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 [2022-11-19 07:04:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:00,488 INFO L225 Difference]: With dead ends: 303 [2022-11-19 07:04:00,488 INFO L226 Difference]: Without dead ends: 303 [2022-11-19 07:04:00,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=615, Invalid=10297, Unknown=12, NotChecked=206, Total=11130 [2022-11-19 07:04:00,490 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 356 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1462 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:00,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1817 Invalid, 4205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2688 Invalid, 0 Unknown, 1462 Unchecked, 2.7s Time] [2022-11-19 07:04:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-19 07:04:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 207. [2022-11-19 07:04:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 143 states have (on average 1.4055944055944056) internal successors, (201), 184 states have internal predecessors, (201), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:04:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2022-11-19 07:04:00,499 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 51 [2022-11-19 07:04:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:00,500 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2022-11-19 07:04:00,500 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) [2022-11-19 07:04:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2022-11-19 07:04:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:04:00,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:00,501 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] [2022-11-19 07:04:00,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:04:00,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-19 07:04:00,710 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)] === [2022-11-19 07:04:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1317054238, now seen corresponding path program 1 times [2022-11-19 07:04:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:00,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174800475] [2022-11-19 07:04:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:04:03,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174800475] [2022-11-19 07:04:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174800475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669829478] [2022-11-19 07:04:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:03,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:03,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:03,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:04:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:03,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-19 07:04:03,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:03,873 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 [2022-11-19 07:04:04,086 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:04:04,087 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 [2022-11-19 07:04:04,161 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:04:04,161 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 [2022-11-19 07:04:04,378 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_3611 (Array Int Int)) (v_ArrVal_3612 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3611) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3612) |c_#memory_$Pointer$.base|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-19 07:04:04,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:04,417 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:04:04,417 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 [2022-11-19 07:04:04,432 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 27 treesize of output 21 [2022-11-19 07:04:04,534 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 20 treesize of output 12 [2022-11-19 07:04:04,805 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_3614 (Array Int Int)) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_3615 (Array Int Int)) (v_ArrVal_3616 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_3614) |chain_node_~node~0#1.base| v_ArrVal_3615) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3616)))) is different from true [2022-11-19 07:04:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:04,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:04,855 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-19 07:04:04,855 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 33 treesize of output 52 [2022-11-19 07:04:04,966 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 [2022-11-19 07:04:05,073 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 [2022-11-19 07:04:05,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:04:05,088 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 [2022-11-19 07:04:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 15 refuted. 1 times theorem prover too weak. 4 trivial. 3 not checked. [2022-11-19 07:04:05,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:05,157 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 [2022-11-19 07:04:05,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669829478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:05,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959760933] [2022-11-19 07:04:05,425 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-19 07:04:05,425 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:04:05,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:04:05,426 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:04:05,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:04:05,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,469 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 [2022-11-19 07:04:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,552 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:04:05,552 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 [2022-11-19 07:04:05,571 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 [2022-11-19 07:04:05,576 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 [2022-11-19 07:04:05,582 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 [2022-11-19 07:04:05,588 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 [2022-11-19 07:04:05,594 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 [2022-11-19 07:04:05,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,604 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 [2022-11-19 07:04:05,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:04:05,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,619 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 [2022-11-19 07:04:05,635 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 [2022-11-19 07:04:05,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,674 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:04:05,675 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 [2022-11-19 07:04:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,721 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:04:05,721 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 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 07:04:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,799 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:04:05,800 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 [2022-11-19 07:04:05,820 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 [2022-11-19 07:04:05,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,864 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:04:05,864 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 [2022-11-19 07:04:05,921 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 [2022-11-19 07:04:05,929 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 [2022-11-19 07:04:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,953 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 [2022-11-19 07:04:05,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,027 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:04:06,028 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 [2022-11-19 07:04:06,059 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 [2022-11-19 07:04:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,080 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 [2022-11-19 07:04:06,090 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 [2022-11-19 07:04:06,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,149 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 [2022-11-19 07:04:06,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,167 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 [2022-11-19 07:04:06,180 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 [2022-11-19 07:04:06,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,240 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:06,240 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 [2022-11-19 07:04:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,280 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 [2022-11-19 07:04:06,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,291 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 [2022-11-19 07:04:06,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,302 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 [2022-11-19 07:04:06,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,316 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 [2022-11-19 07:04:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,374 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:06,374 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 [2022-11-19 07:04:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,413 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 [2022-11-19 07:04:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,425 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 [2022-11-19 07:04:06,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,438 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 [2022-11-19 07:04:06,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,449 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 [2022-11-19 07:04:06,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,531 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 [2022-11-19 07:04:06,544 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 [2022-11-19 07:04:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,556 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 [2022-11-19 07:04:06,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,622 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:06,622 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 [2022-11-19 07:04:06,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,660 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 [2022-11-19 07:04:06,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,679 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 [2022-11-19 07:04:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,691 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 15 treesize of output 11 [2022-11-19 07:04:06,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,706 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 [2022-11-19 07:04:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,776 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:06,777 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 [2022-11-19 07:04:06,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,821 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 [2022-11-19 07:04:06,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,832 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 [2022-11-19 07:04:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,845 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 [2022-11-19 07:04:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,857 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 [2022-11-19 07:04:06,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:06,964 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:06,964 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 [2022-11-19 07:04:07,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,033 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:07,033 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 [2022-11-19 07:04:07,221 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:04:07,221 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 [2022-11-19 07:04:07,535 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 [2022-11-19 07:04:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,697 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:04:07,697 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 [2022-11-19 07:04:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,764 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:04:07,764 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 [2022-11-19 07:04:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:07,845 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:04:07,846 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 [2022-11-19 07:04:07,865 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:04:07,889 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 [2022-11-19 07:04:07,931 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 [2022-11-19 07:04:07,980 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 [2022-11-19 07:04:08,006 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 [2022-11-19 07:04:08,029 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 [2022-11-19 07:04:08,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,069 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 [2022-11-19 07:04:08,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,127 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 [2022-11-19 07:04:08,141 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 [2022-11-19 07:04:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:08,318 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:04:08,319 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 [2022-11-19 07:04:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:08,368 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:04:08,369 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 [2022-11-19 07:04:08,428 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 [2022-11-19 07:04:08,541 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 [2022-11-19 07:04:08,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:08,590 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:04:08,590 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 [2022-11-19 07:04:08,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:08,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:08,622 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:04:08,622 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 [2022-11-19 07:04:08,650 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:04:08,697 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-19 07:04:08,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:04:17,291 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13260#(and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|) 0) 0) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_155|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_138|))) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_68| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_68| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:04:17,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:04:17,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:04:17,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24] total 41 [2022-11-19 07:04:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871415767] [2022-11-19 07:04:17,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:04:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 07:04:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 07:04:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=3514, Unknown=24, NotChecked=242, Total=4032 [2022-11-19 07:04:17,293 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 41 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 38 states have internal predecessors, (68), 9 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:04:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:20,569 INFO L93 Difference]: Finished difference Result 236 states and 272 transitions. [2022-11-19 07:04:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:04:20,570 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 38 states have internal predecessors, (68), 9 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 54 [2022-11-19 07:04:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:20,571 INFO L225 Difference]: With dead ends: 236 [2022-11-19 07:04:20,572 INFO L226 Difference]: Without dead ends: 236 [2022-11-19 07:04:20,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 78 SyntacticMatches, 9 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=392, Invalid=5136, Unknown=30, NotChecked=294, Total=5852 [2022-11-19 07:04:20,573 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 160 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1674 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2109 Invalid, 0 Unknown, 607 Unchecked, 2.0s Time] [2022-11-19 07:04:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-19 07:04:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2022-11-19 07:04:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 159 states have (on average 1.4150943396226414) internal successors, (225), 201 states have internal predecessors, (225), 24 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 07:04:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2022-11-19 07:04:20,581 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 54 [2022-11-19 07:04:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:20,582 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2022-11-19 07:04:20,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 38 states have internal predecessors, (68), 9 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:04:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2022-11-19 07:04:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:04:20,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:20,583 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] [2022-11-19 07:04:20,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:04:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-19 07:04:20,799 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:04:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 33494336, now seen corresponding path program 1 times [2022-11-19 07:04:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836207085] [2022-11-19 07:04:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:04:27,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:27,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836207085] [2022-11-19 07:04:27,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836207085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:27,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885429275] [2022-11-19 07:04:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:27,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:27,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:27,308 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:04:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 131 conjunts are in the unsatisfiable core [2022-11-19 07:04:27,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:28,147 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 11 treesize of output 7 [2022-11-19 07:04:28,154 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 [2022-11-19 07:04:28,258 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 [2022-11-19 07:04:28,269 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 [2022-11-19 07:04:28,385 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:04:28,385 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 [2022-11-19 07:04:28,406 INFO L321 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-11-19 07:04:28,407 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 [2022-11-19 07:04:28,531 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-19 07:04:28,531 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 [2022-11-19 07:04:28,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:28,857 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:04:28,857 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 [2022-11-19 07:04:28,870 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:04:28,871 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 64 treesize of output 49 [2022-11-19 07:04:29,430 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3849 (Array Int Int)) (v_ArrVal_3850 (Array Int Int)) (v_ArrVal_3851 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3848 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3849) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3850) |c_#memory_$Pointer$.offset|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3848) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3851) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:04:29,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:29,501 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:04:29,501 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 3 case distinctions, treesize of input 35 treesize of output 56 [2022-11-19 07:04:29,513 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 [2022-11-19 07:04:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:29,568 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-19 07:04:29,569 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 69 treesize of output 83 [2022-11-19 07:04:29,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:29,591 INFO L321 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-11-19 07:04:29,591 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 18 treesize of output 20 [2022-11-19 07:04:29,620 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 45 treesize of output 33 [2022-11-19 07:04:29,636 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 38 treesize of output 28 [2022-11-19 07:04:29,895 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 [2022-11-19 07:04:30,151 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:04:30,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:04:30,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:30,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:04:30,979 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 [2022-11-19 07:04:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:30,987 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:04:30,987 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 [2022-11-19 07:04:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 07:04:30,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:52,738 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:05,259 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:05,448 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 [2022-11-19 07:05:06,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885429275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980049743] [2022-11-19 07:05:06,052 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-19 07:05:06,052 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:06,052 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:06,052 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:06,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:06,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,095 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 [2022-11-19 07:05:06,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,187 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:06,188 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 [2022-11-19 07:05:06,211 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 [2022-11-19 07:05:06,216 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 [2022-11-19 07:05:06,223 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 [2022-11-19 07:05:06,228 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 [2022-11-19 07:05:06,233 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 [2022-11-19 07:05:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,247 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 [2022-11-19 07:05:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,255 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 [2022-11-19 07:05:06,263 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 [2022-11-19 07:05:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,316 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:06,316 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 [2022-11-19 07:05:06,328 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 15 treesize of output 1 [2022-11-19 07:05:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,370 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:06,370 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 32 treesize of output 42 [2022-11-19 07:05:06,387 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 [2022-11-19 07:05:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,460 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:05:06,461 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 [2022-11-19 07:05:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,525 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:05:06,525 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 [2022-11-19 07:05:06,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,593 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 [2022-11-19 07:05:06,601 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 [2022-11-19 07:05:06,609 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 [2022-11-19 07:05:06,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,690 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:06,691 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 [2022-11-19 07:05:06,723 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 [2022-11-19 07:05:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,745 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 [2022-11-19 07:05:06,754 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 [2022-11-19 07:05:06,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,824 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 [2022-11-19 07:05:06,836 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 [2022-11-19 07:05:06,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,848 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 [2022-11-19 07:05:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,918 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:06,918 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 [2022-11-19 07:05:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,958 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 [2022-11-19 07:05:06,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,971 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 [2022-11-19 07:05:06,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,989 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 [2022-11-19 07:05:07,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,001 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 [2022-11-19 07:05:07,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,074 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:07,074 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 [2022-11-19 07:05:07,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,123 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 [2022-11-19 07:05:07,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,137 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 [2022-11-19 07:05:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,149 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 [2022-11-19 07:05:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,164 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 [2022-11-19 07:05:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,238 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 [2022-11-19 07:05:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,254 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 [2022-11-19 07:05:07,269 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 [2022-11-19 07:05:07,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,339 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:07,339 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 [2022-11-19 07:05:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,387 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 [2022-11-19 07:05:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,398 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 [2022-11-19 07:05:07,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,411 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 [2022-11-19 07:05:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,424 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 [2022-11-19 07:05:07,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,492 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:07,493 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 [2022-11-19 07:05:07,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,550 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 [2022-11-19 07:05:07,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,563 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 [2022-11-19 07:05:07,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,576 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 [2022-11-19 07:05:07,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,588 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 [2022-11-19 07:05:07,653 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 [2022-11-19 07:05:07,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,805 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:05:07,805 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 [2022-11-19 07:05:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,921 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:05:07,922 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 [2022-11-19 07:05:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,107 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:05:08,107 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 [2022-11-19 07:05:08,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,188 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:08,188 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 [2022-11-19 07:05:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,263 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:08,264 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 [2022-11-19 07:05:08,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,365 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:08,366 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 [2022-11-19 07:05:08,383 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:05:08,390 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 [2022-11-19 07:05:08,395 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 [2022-11-19 07:05:08,404 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 [2022-11-19 07:05:08,409 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 [2022-11-19 07:05:08,415 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 [2022-11-19 07:05:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,427 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 21 treesize of output 20 [2022-11-19 07:05:08,434 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 [2022-11-19 07:05:08,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,442 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 [2022-11-19 07:05:08,463 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 [2022-11-19 07:05:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,493 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:05:08,493 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 [2022-11-19 07:05:08,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,528 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:05:08,528 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 [2022-11-19 07:05:08,550 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 [2022-11-19 07:05:08,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,571 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:05:08,572 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 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-19 07:05:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,600 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:05:08,600 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 [2022-11-19 07:05:08,608 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:05:08,734 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 45 for LOIs [2022-11-19 07:05:08,743 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:05:19,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14051#(and (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0))) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 4)) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) (not (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 4)) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0)) 1))) (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0))) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 4)) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|)) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0) 4)) 0)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_183|) 0)) 1)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:05:19,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:05:19,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:05:19,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 48 [2022-11-19 07:05:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131840032] [2022-11-19 07:05:19,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 07:05:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 07:05:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=6594, Unknown=13, NotChecked=164, Total=7140 [2022-11-19 07:05:19,738 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 48 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:05:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:26,138 INFO L93 Difference]: Finished difference Result 246 states and 289 transitions. [2022-11-19 07:05:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:05:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 54 [2022-11-19 07:05:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:26,139 INFO L225 Difference]: With dead ends: 246 [2022-11-19 07:05:26,139 INFO L226 Difference]: Without dead ends: 246 [2022-11-19 07:05:26,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=597, Invalid=10314, Unknown=13, NotChecked=206, Total=11130 [2022-11-19 07:05:26,140 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 68 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 666 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:26,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 2106 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2171 Invalid, 0 Unknown, 666 Unchecked, 2.2s Time] [2022-11-19 07:05:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-19 07:05:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2022-11-19 07:05:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 169 states have (on average 1.3905325443786982) internal successors, (235), 211 states have internal predecessors, (235), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-19 07:05:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 277 transitions. [2022-11-19 07:05:26,147 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 277 transitions. Word has length 54 [2022-11-19 07:05:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:26,147 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 277 transitions. [2022-11-19 07:05:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:05:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 277 transitions. [2022-11-19 07:05:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:05:26,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:26,148 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] [2022-11-19 07:05:26,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:26,355 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:05:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1315305388, now seen corresponding path program 1 times [2022-11-19 07:05:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:26,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68545860] [2022-11-19 07:05:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:05:29,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68545860] [2022-11-19 07:05:29,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68545860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060606958] [2022-11-19 07:05:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:29,609 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:29,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 07:05:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:29,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-19 07:05:29,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:30,190 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 [2022-11-19 07:05:30,464 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:05:30,464 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 24 treesize of output 19 [2022-11-19 07:05:30,556 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:05:30,556 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 [2022-11-19 07:05:30,559 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 [2022-11-19 07:05:30,893 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4130 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (not (= |chain_node_~node~0#1.base| 0)) (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4130))) (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| |chain_node_~node~0#1.base|)))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:05:30,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:30,960 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-19 07:05:30,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 104 [2022-11-19 07:05:30,976 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:05:30,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:05:30,998 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 22 treesize of output 17 [2022-11-19 07:05:31,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:05:31,068 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 15 treesize of output 12 [2022-11-19 07:05:31,080 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 72 [2022-11-19 07:05:31,107 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:31,113 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:32,219 INFO L321 Elim1Store]: treesize reduction 112, result has 36.7 percent of original size [2022-11-19 07:05:32,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1613 treesize of output 1337 [2022-11-19 07:05:32,566 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 [2022-11-19 07:05:32,636 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 57 treesize of output 54 [2022-11-19 07:05:32,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:05:32,913 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 25 treesize of output 21 [2022-11-19 07:05:33,205 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4138 (Array Int Int)) (v_ArrVal_4139 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4138) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4139)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-19 07:05:33,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:33,247 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:05:33,248 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 34 treesize of output 50 [2022-11-19 07:05:33,255 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 [2022-11-19 07:05:33,276 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 13 treesize of output 9 [2022-11-19 07:05:33,388 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 [2022-11-19 07:05:33,674 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4143 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4138 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4138) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4143) |c_#memory_$Pointer$.base|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-19 07:05:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:33,710 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:05:33,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-11-19 07:05:33,807 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 [2022-11-19 07:05:33,938 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 [2022-11-19 07:05:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2022-11-19 07:05:33,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:33,996 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 [2022-11-19 07:05:34,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060606958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [140100164] [2022-11-19 07:05:34,246 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:05:34,246 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:34,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:34,247 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:34,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:34,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,286 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 [2022-11-19 07:05:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,361 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:34,361 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 [2022-11-19 07:05:34,379 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 [2022-11-19 07:05:34,383 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 [2022-11-19 07:05:34,390 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 [2022-11-19 07:05:34,395 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 [2022-11-19 07:05:34,399 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 [2022-11-19 07:05:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,411 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 [2022-11-19 07:05:34,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,421 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 [2022-11-19 07:05:34,428 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 [2022-11-19 07:05:34,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,474 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:34,475 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 [2022-11-19 07:05:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,539 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:34,540 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 [2022-11-19 07:05:34,551 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 [2022-11-19 07:05:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,606 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:05:34,606 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 [2022-11-19 07:05:34,617 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 [2022-11-19 07:05:34,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,688 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:05:34,688 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 [2022-11-19 07:05:34,735 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 [2022-11-19 07:05:34,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,762 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 [2022-11-19 07:05:34,776 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 [2022-11-19 07:05:34,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,863 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:34,863 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 [2022-11-19 07:05:34,900 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 [2022-11-19 07:05:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:34,926 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 [2022-11-19 07:05:34,937 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 [2022-11-19 07:05:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,002 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 [2022-11-19 07:05:35,012 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 [2022-11-19 07:05:35,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,028 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 [2022-11-19 07:05:35,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,095 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,095 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 [2022-11-19 07:05:35,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,130 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 [2022-11-19 07:05:35,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,141 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 [2022-11-19 07:05:35,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,155 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 [2022-11-19 07:05:35,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,167 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 [2022-11-19 07:05:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,238 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,238 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 [2022-11-19 07:05:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,287 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 [2022-11-19 07:05:35,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,298 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 [2022-11-19 07:05:35,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,309 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 [2022-11-19 07:05:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,323 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 [2022-11-19 07:05:35,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-19 07:05:35,422 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 [2022-11-19 07:05:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,434 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 [2022-11-19 07:05:35,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,501 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,501 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 [2022-11-19 07:05:35,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,544 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 [2022-11-19 07:05:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,558 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 [2022-11-19 07:05:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,568 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 [2022-11-19 07:05:35,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,582 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 [2022-11-19 07:05:35,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,645 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,647 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 [2022-11-19 07:05:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,692 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 [2022-11-19 07:05:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,705 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 [2022-11-19 07:05:35,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,718 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 [2022-11-19 07:05:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,728 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 [2022-11-19 07:05:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,836 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,836 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 [2022-11-19 07:05:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:35,908 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:35,909 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 [2022-11-19 07:05:36,125 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:05:36,125 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 [2022-11-19 07:05:36,492 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 [2022-11-19 07:05:36,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,651 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:05:36,651 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 [2022-11-19 07:05:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,729 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:36,729 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 [2022-11-19 07:05:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:36,806 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:36,807 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 [2022-11-19 07:05:36,822 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:05:36,862 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 [2022-11-19 07:05:36,872 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 [2022-11-19 07:05:36,935 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 [2022-11-19 07:05:36,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:05:36,984 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 [2022-11-19 07:05:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,050 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 [2022-11-19 07:05:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,094 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 [2022-11-19 07:05:37,107 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 [2022-11-19 07:05:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:37,277 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:05:37,277 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 [2022-11-19 07:05:37,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:37,345 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:05:37,345 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 [2022-11-19 07:05:37,385 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 [2022-11-19 07:05:37,454 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 [2022-11-19 07:05:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:37,511 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:05:37,512 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 [2022-11-19 07:05:37,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:37,578 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:05:37,578 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 [2022-11-19 07:05:37,591 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:05:37,683 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-19 07:05:37,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:05:48,135 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14872#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_76| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_76| 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|))) (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 0) 0) (= 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 1) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|)))))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 0) 0) (= 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| Int)) (and (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_182|)))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_164|) 1)))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:05:48,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:05:48,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:05:48,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 52 [2022-11-19 07:05:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382277235] [2022-11-19 07:05:48,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:48,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 07:05:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 07:05:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=4932, Unknown=38, NotChecked=432, Total=5700 [2022-11-19 07:05:48,138 INFO L87 Difference]: Start difference. First operand 238 states and 277 transitions. Second operand has 52 states, 39 states have (on average 2.0) internal successors, (78), 47 states have internal predecessors, (78), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:05:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:52,237 INFO L93 Difference]: Finished difference Result 304 states and 361 transitions. [2022-11-19 07:05:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 07:05:52,238 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 39 states have (on average 2.0) internal successors, (78), 47 states have internal predecessors, (78), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2022-11-19 07:05:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:52,239 INFO L225 Difference]: With dead ends: 304 [2022-11-19 07:05:52,240 INFO L226 Difference]: Without dead ends: 304 [2022-11-19 07:05:52,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 80 SyntacticMatches, 12 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=472, Invalid=7330, Unknown=42, NotChecked=528, Total=8372 [2022-11-19 07:05:52,241 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 134 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 820 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:52,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1761 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2240 Invalid, 0 Unknown, 820 Unchecked, 2.0s Time] [2022-11-19 07:05:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-19 07:05:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 282. [2022-11-19 07:05:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 207 states have (on average 1.391304347826087) internal successors, (288), 250 states have internal predecessors, (288), 28 states have call successors, (28), 14 states have call predecessors, (28), 13 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:05:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 336 transitions. [2022-11-19 07:05:52,251 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 336 transitions. Word has length 56 [2022-11-19 07:05:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:52,252 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 336 transitions. [2022-11-19 07:05:52,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 39 states have (on average 2.0) internal successors, (78), 47 states have internal predecessors, (78), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:05:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 336 transitions. [2022-11-19 07:05:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:05:52,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:52,253 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] [2022-11-19 07:05:52,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-19 07:05:52,462 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:05:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1266960524, now seen corresponding path program 1 times [2022-11-19 07:05:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790463455] [2022-11-19 07:05:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:05:55,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:55,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790463455] [2022-11-19 07:05:55,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790463455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:55,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342210735] [2022-11-19 07:05:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:55,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:55,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:55,700 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:55,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:05:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:56,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-19 07:05:56,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:56,323 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 [2022-11-19 07:05:56,658 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:05:56,658 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 24 treesize of output 19 [2022-11-19 07:05:56,740 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:05:56,740 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 [2022-11-19 07:05:57,042 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4413 (Array Int Int)) (v_ArrVal_4414 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4413) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4414)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-19 07:05:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:57,098 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:05:57,099 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 29 treesize of output 45 [2022-11-19 07:05:57,104 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 [2022-11-19 07:05:57,127 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 [2022-11-19 07:05:57,236 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 [2022-11-19 07:05:57,575 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4416 (Array Int Int))) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4416))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-11-19 07:05:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:57,642 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-19 07:05:57,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 101 [2022-11-19 07:05:57,656 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 7 [2022-11-19 07:05:57,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:57,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-19 07:05:57,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 12 [2022-11-19 07:05:57,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:57,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-19 07:05:58,120 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-19 07:05:58,121 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 39 treesize of output 45 [2022-11-19 07:05:58,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:05:58,257 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 24 treesize of output 20 [2022-11-19 07:05:58,537 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4413 (Array Int Int)) (v_ArrVal_4425 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4413) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4425)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-19 07:05:58,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:58,586 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:05:58,587 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 35 treesize of output 51 [2022-11-19 07:05:58,595 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 [2022-11-19 07:05:58,612 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 [2022-11-19 07:05:58,711 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 [2022-11-19 07:05:58,819 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 [2022-11-19 07:05:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 6 not checked. [2022-11-19 07:05:58,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:58,860 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 [2022-11-19 07:05:59,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342210735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:59,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438468973] [2022-11-19 07:05:59,098 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:05:59,099 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:59,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:59,099 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:59,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:59,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,139 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 [2022-11-19 07:05:59,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,228 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:59,229 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 [2022-11-19 07:05:59,249 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 [2022-11-19 07:05:59,254 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 [2022-11-19 07:05:59,262 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 [2022-11-19 07:05:59,268 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 [2022-11-19 07:05:59,273 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 [2022-11-19 07:05:59,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,285 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 [2022-11-19 07:05:59,292 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 [2022-11-19 07:05:59,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,300 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 [2022-11-19 07:05:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,379 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:59,379 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 [2022-11-19 07:05:59,418 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 15 treesize of output 1 [2022-11-19 07:05:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,458 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:05:59,459 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 [2022-11-19 07:05:59,477 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 [2022-11-19 07:05:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,528 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:05:59,528 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 [2022-11-19 07:05:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,604 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:05:59,604 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 [2022-11-19 07:05:59,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,663 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 [2022-11-19 07:05:59,673 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 [2022-11-19 07:05:59,685 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 [2022-11-19 07:05:59,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,764 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:05:59,764 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 [2022-11-19 07:05:59,795 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 [2022-11-19 07:05:59,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,820 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 [2022-11-19 07:05:59,833 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 [2022-11-19 07:05:59,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,905 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 [2022-11-19 07:05:59,915 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 [2022-11-19 07:05:59,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,934 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 [2022-11-19 07:05:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:59,999 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:05:59,999 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 [2022-11-19 07:06:00,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,045 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 [2022-11-19 07:06:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,055 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 [2022-11-19 07:06:00,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,070 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 [2022-11-19 07:06:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,082 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 [2022-11-19 07:06:00,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,147 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:00,148 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 [2022-11-19 07:06:00,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,190 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 [2022-11-19 07:06:00,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,201 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 [2022-11-19 07:06:00,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,211 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 [2022-11-19 07:06:00,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,226 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 [2022-11-19 07:06:00,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,319 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:00,319 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 [2022-11-19 07:06:00,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,391 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:00,391 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 [2022-11-19 07:06:00,603 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:06:00,603 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 [2022-11-19 07:06:00,917 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 [2022-11-19 07:06:00,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,930 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 [2022-11-19 07:06:00,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,942 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 [2022-11-19 07:06:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:00,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,016 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:01,016 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 [2022-11-19 07:06:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,056 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 [2022-11-19 07:06:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,067 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 [2022-11-19 07:06:01,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,078 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 [2022-11-19 07:06:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,090 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 [2022-11-19 07:06:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,158 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:01,158 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 [2022-11-19 07:06:01,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,203 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 [2022-11-19 07:06:01,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,216 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 [2022-11-19 07:06:01,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,228 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 15 treesize of output 11 [2022-11-19 07:06:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,257 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 [2022-11-19 07:06:01,323 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 [2022-11-19 07:06:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,468 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:06:01,468 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 [2022-11-19 07:06:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,550 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:01,550 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 [2022-11-19 07:06:01,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,641 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:06:01,642 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 [2022-11-19 07:06:01,660 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:06:01,687 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 [2022-11-19 07:06:01,711 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 [2022-11-19 07:06:01,758 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 [2022-11-19 07:06:01,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:06:01,809 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 [2022-11-19 07:06:01,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,875 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 [2022-11-19 07:06:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:01,892 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 [2022-11-19 07:06:01,937 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 [2022-11-19 07:06:02,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:02,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:02,097 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:06:02,097 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 [2022-11-19 07:06:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:02,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:02,142 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:06:02,142 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 [2022-11-19 07:06:02,204 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 [2022-11-19 07:06:02,258 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 [2022-11-19 07:06:02,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:02,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:02,332 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:06:02,332 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 44 treesize of output 38 [2022-11-19 07:06:02,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:02,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:02,370 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:06:02,370 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 [2022-11-19 07:06:02,408 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:06:02,502 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-19 07:06:02,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:06:12,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15778#(and (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|)))) (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) 0) 0)))))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_194|) 0) 0)))) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) 0) 0) (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|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_177|) (= (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))))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:06:12,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:06:12,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:06:12,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 52 [2022-11-19 07:06:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183144367] [2022-11-19 07:06:12,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:06:12,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 07:06:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 07:06:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=4941, Unknown=26, NotChecked=432, Total=5700 [2022-11-19 07:06:12,813 INFO L87 Difference]: Start difference. First operand 282 states and 336 transitions. Second operand has 52 states, 38 states have (on average 2.026315789473684) internal successors, (77), 47 states have internal predecessors, (77), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:06:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:17,089 INFO L93 Difference]: Finished difference Result 306 states and 365 transitions. [2022-11-19 07:06:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 07:06:17,090 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 38 states have (on average 2.026315789473684) internal successors, (77), 47 states have internal predecessors, (77), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 56 [2022-11-19 07:06:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:17,093 INFO L225 Difference]: With dead ends: 306 [2022-11-19 07:06:17,093 INFO L226 Difference]: Without dead ends: 306 [2022-11-19 07:06:17,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 81 SyntacticMatches, 11 SemanticMatches, 91 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2729 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=487, Invalid=7507, Unknown=28, NotChecked=534, Total=8556 [2022-11-19 07:06:17,094 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 202 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 630 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:17,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1476 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2307 Invalid, 0 Unknown, 630 Unchecked, 2.4s Time] [2022-11-19 07:06:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-19 07:06:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 282. [2022-11-19 07:06:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 207 states have (on average 1.3864734299516908) internal successors, (287), 250 states have internal predecessors, (287), 28 states have call successors, (28), 14 states have call predecessors, (28), 13 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:06:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 335 transitions. [2022-11-19 07:06:17,117 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 335 transitions. Word has length 56 [2022-11-19 07:06:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:17,118 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 335 transitions. [2022-11-19 07:06:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 38 states have (on average 2.026315789473684) internal successors, (77), 47 states have internal predecessors, (77), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:06:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 335 transitions. [2022-11-19 07:06:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:06:17,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:17,119 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] [2022-11-19 07:06:17,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:17,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-19 07:06:17,328 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:06:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1038208482, now seen corresponding path program 1 times [2022-11-19 07:06:17,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337596665] [2022-11-19 07:06:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:25,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:25,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337596665] [2022-11-19 07:06:25,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337596665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:25,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870240752] [2022-11-19 07:06:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:25,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:25,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:25,006 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:25,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:06:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:25,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-19 07:06:25,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:25,453 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 [2022-11-19 07:06:25,688 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 [2022-11-19 07:06:26,118 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:06:26,119 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 [2022-11-19 07:06:26,282 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:06:26,283 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 [2022-11-19 07:06:26,288 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:06:26,288 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 [2022-11-19 07:06:26,781 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4646 Int) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4642 Int) (v_ArrVal_4645 (Array Int Int))) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4645))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| v_ArrVal_4646))) |c_#memory_$Pointer$.base|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_4642)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:06:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:26,878 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-19 07:06:26,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 112 [2022-11-19 07:06:26,927 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-19 07:06:26,927 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 24 treesize of output 37 [2022-11-19 07:06:26,946 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 16 treesize of output 13 [2022-11-19 07:06:26,992 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 [2022-11-19 07:06:27,010 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 42 treesize of output 38 [2022-11-19 07:06:27,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 95 [2022-11-19 07:06:27,801 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:06:27,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 48 [2022-11-19 07:06:28,069 INFO L321 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2022-11-19 07:06:28,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 45 treesize of output 73 [2022-11-19 07:06:28,088 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-19 07:06:28,089 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 50 [2022-11-19 07:06:29,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:29,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:29,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:29,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:29,149 INFO L321 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-11-19 07:06:29,149 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 4 case distinctions, treesize of input 62 treesize of output 87 [2022-11-19 07:06:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:29,245 INFO L321 Elim1Store]: treesize reduction 96, result has 34.2 percent of original size [2022-11-19 07:06:29,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 52 treesize of output 93 [2022-11-19 07:06:29,266 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 [2022-11-19 07:06:29,373 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 17 treesize of output 13 [2022-11-19 07:06:29,407 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 [2022-11-19 07:06:29,451 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 106 treesize of output 94 [2022-11-19 07:06:31,656 INFO L321 Elim1Store]: treesize reduction 384, result has 28.5 percent of original size [2022-11-19 07:06:31,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 44 case distinctions, treesize of input 237 treesize of output 362 [2022-11-19 07:06:57,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:57,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 31 [2022-11-19 07:06:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-19 07:06:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:06:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870240752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1455178293] [2022-11-19 07:06:58,666 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-19 07:06:58,666 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:06:58,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:06:58,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:06:58,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:06:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,706 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 [2022-11-19 07:06:58,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,804 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:06:58,805 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 [2022-11-19 07:06:58,823 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 [2022-11-19 07:06:58,829 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 [2022-11-19 07:06:58,836 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 [2022-11-19 07:06:58,843 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 [2022-11-19 07:06:58,849 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 [2022-11-19 07:06:58,861 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 [2022-11-19 07:06:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,869 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 [2022-11-19 07:06:58,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,879 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 [2022-11-19 07:06:58,895 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 [2022-11-19 07:06:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,935 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:06:58,935 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 [2022-11-19 07:06:58,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:58,980 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:06:58,981 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 [2022-11-19 07:06:58,995 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 [2022-11-19 07:06:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,043 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:06:59,044 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 [2022-11-19 07:06:59,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,120 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:06:59,120 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 [2022-11-19 07:06:59,176 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 [2022-11-19 07:06:59,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,198 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 [2022-11-19 07:06:59,206 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 [2022-11-19 07:06:59,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,276 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:06:59,276 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 [2022-11-19 07:06:59,311 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 [2022-11-19 07:06:59,319 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 [2022-11-19 07:06:59,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,339 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 [2022-11-19 07:06:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,411 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 [2022-11-19 07:06:59,424 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 [2022-11-19 07:06:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,438 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 [2022-11-19 07:06:59,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,504 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:59,505 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 [2022-11-19 07:06:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,543 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 15 treesize of output 11 [2022-11-19 07:06:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,555 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 [2022-11-19 07:06:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,566 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 [2022-11-19 07:06:59,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,578 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 [2022-11-19 07:06:59,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,655 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:59,656 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 [2022-11-19 07:06:59,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,697 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 [2022-11-19 07:06:59,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,707 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 [2022-11-19 07:06:59,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,717 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 [2022-11-19 07:06:59,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,731 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 [2022-11-19 07:06:59,802 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 [2022-11-19 07:06:59,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,818 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 [2022-11-19 07:06:59,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,832 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 [2022-11-19 07:06:59,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,904 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:06:59,905 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 [2022-11-19 07:06:59,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,946 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 [2022-11-19 07:06:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,958 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 [2022-11-19 07:06:59,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,972 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 [2022-11-19 07:06:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:59,983 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 [2022-11-19 07:07:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,047 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:00,048 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 [2022-11-19 07:07:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,095 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 [2022-11-19 07:07:00,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,107 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 [2022-11-19 07:07:00,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,120 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 [2022-11-19 07:07:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,148 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 [2022-11-19 07:07:00,223 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 [2022-11-19 07:07:00,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,415 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:00,416 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 [2022-11-19 07:07:00,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,559 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:00,560 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 [2022-11-19 07:07:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,745 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:00,746 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 [2022-11-19 07:07:00,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,819 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:00,819 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 [2022-11-19 07:07:00,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,897 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:00,897 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 [2022-11-19 07:07:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:00,991 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:07:00,992 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 [2022-11-19 07:07:01,008 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:07:01,015 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 [2022-11-19 07:07:01,020 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 [2022-11-19 07:07:01,030 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 [2022-11-19 07:07:01,035 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 [2022-11-19 07:07:01,042 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 [2022-11-19 07:07:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,056 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 [2022-11-19 07:07:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,064 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 [2022-11-19 07:07:01,072 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 [2022-11-19 07:07:01,091 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 [2022-11-19 07:07:01,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:01,125 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:07:01,125 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 [2022-11-19 07:07:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:01,160 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:07:01,160 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 [2022-11-19 07:07:01,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:01,200 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:07:01,200 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 [2022-11-19 07:07:01,211 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 [2022-11-19 07:07:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:01,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:01,234 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:07:01,234 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 [2022-11-19 07:07:01,239 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:07:01,359 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:07:15,931 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16726#(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 [2022-11-19 07:07:15,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:07:15,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:07:15,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 60 [2022-11-19 07:07:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895442261] [2022-11-19 07:07:15,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:07:15,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-19 07:07:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-19 07:07:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=9112, Unknown=13, NotChecked=192, Total=9702 [2022-11-19 07:07:15,933 INFO L87 Difference]: Start difference. First operand 282 states and 335 transitions. Second operand has 61 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 58 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) [2022-11-19 07:07:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:27,476 INFO L93 Difference]: Finished difference Result 324 states and 399 transitions. [2022-11-19 07:07:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-19 07:07:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 58 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 [2022-11-19 07:07:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:27,478 INFO L225 Difference]: With dead ends: 324 [2022-11-19 07:07:27,479 INFO L226 Difference]: Without dead ends: 324 [2022-11-19 07:07:27,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3302 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=572, Invalid=13685, Unknown=27, NotChecked=236, Total=14520 [2022-11-19 07:07:27,481 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 119 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 4699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1749 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:27,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2424 Invalid, 4699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2907 Invalid, 0 Unknown, 1749 Unchecked, 3.7s Time] [2022-11-19 07:07:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-19 07:07:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 285. [2022-11-19 07:07:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.3857142857142857) internal successors, (291), 253 states have internal predecessors, (291), 28 states have call successors, (28), 14 states have call predecessors, (28), 13 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:07:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 339 transitions. [2022-11-19 07:07:27,491 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 339 transitions. Word has length 55 [2022-11-19 07:07:27,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:27,491 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 339 transitions. [2022-11-19 07:07:27,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 58 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) [2022-11-19 07:07:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 339 transitions. [2022-11-19 07:07:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:07:27,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:27,493 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] [2022-11-19 07:07:27,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:07:27,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:27,701 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:07:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1038208483, now seen corresponding path program 1 times [2022-11-19 07:07:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:27,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585819089] [2022-11-19 07:07:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:35,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585819089] [2022-11-19 07:07:35,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585819089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:07:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014070636] [2022-11-19 07:07:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:35,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:35,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:35,012 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:07:35,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:07:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:35,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 166 conjunts are in the unsatisfiable core [2022-11-19 07:07:35,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:35,535 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 [2022-11-19 07:07:35,857 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 [2022-11-19 07:07:35,864 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 [2022-11-19 07:07:36,290 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:07:36,290 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 [2022-11-19 07:07:36,315 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:07:36,315 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 [2022-11-19 07:07:36,473 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:07:36,473 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 [2022-11-19 07:07:36,481 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:07:36,481 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 [2022-11-19 07:07:37,072 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4879 Int) (v_ArrVal_4885 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4886 (Array Int Int)) (v_ArrVal_4889 (Array Int Int)) (v_ArrVal_4880 Int)) (and (= |c_#length| (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_4880)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4886) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4889) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_4879)) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4885))) (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)))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:07:37,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,126 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-19 07:07:37,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2022-11-19 07:07:37,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,162 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-19 07:07:37,162 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 39 treesize of output 49 [2022-11-19 07:07:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:37,172 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 [2022-11-19 07:07:37,197 INFO L321 Elim1Store]: treesize reduction 24, result has 36.8 percent of original size [2022-11-19 07:07:37,197 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 [2022-11-19 07:07:37,215 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 22 treesize of output 16 [2022-11-19 07:07:37,236 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 [2022-11-19 07:07:37,252 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 [2022-11-19 07:07:37,738 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 [2022-11-19 07:07:37,755 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:07:37,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2022-11-19 07:07:37,956 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 34 treesize of output 26 [2022-11-19 07:07:37,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:07:37,968 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 [2022-11-19 07:07:37,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:07:37,983 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 22 treesize of output 27 [2022-11-19 07:07:37,996 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:07:37,996 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 07:07:38,635 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4898 (Array Int Int)) (v_ArrVal_4893 Int) (v_ArrVal_4899 (Array Int Int)) (v_ArrVal_4900 (Array Int Int)) (v_ArrVal_4901 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4898) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4900) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#length| (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_4893)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4899) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4901)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:07:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:38,728 INFO L321 Elim1Store]: treesize reduction 33, result has 53.5 percent of original size [2022-11-19 07:07:38,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 63 [2022-11-19 07:07:38,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:38,757 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:07:38,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 50 [2022-11-19 07:07:38,799 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-19 07:07:38,799 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 [2022-11-19 07:07:38,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:07:38,832 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 [2022-11-19 07:07:38,973 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 [2022-11-19 07:07:39,064 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 [2022-11-19 07:07:39,249 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 [2022-11-19 07:07:39,480 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:07:39,481 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 [2022-11-19 07:07:39,899 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 [2022-11-19 07:07:39,903 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 [2022-11-19 07:07:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-11-19 07:07:39,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:07:40,254 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 10 treesize of output 8 [2022-11-19 07:07:41,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014070636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:07:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1846072079] [2022-11-19 07:07:41,121 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-19 07:07:41,121 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:07:41,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:07:41,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:07:41,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:07:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,158 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 [2022-11-19 07:07:41,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,236 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:07:41,236 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 [2022-11-19 07:07:41,252 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 [2022-11-19 07:07:41,256 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 [2022-11-19 07:07:41,262 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 [2022-11-19 07:07:41,266 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 [2022-11-19 07:07:41,271 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 11 treesize of output 7 [2022-11-19 07:07:41,281 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 [2022-11-19 07:07:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,287 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 [2022-11-19 07:07:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,295 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 [2022-11-19 07:07:41,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,339 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:07:41,340 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 [2022-11-19 07:07:41,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,381 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:07:41,381 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 [2022-11-19 07:07:41,393 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 [2022-11-19 07:07:41,407 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 [2022-11-19 07:07:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,454 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:07:41,454 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 [2022-11-19 07:07:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,524 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:07:41,524 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 [2022-11-19 07:07:41,587 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 [2022-11-19 07:07:41,594 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 [2022-11-19 07:07:41,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,614 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 [2022-11-19 07:07:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,690 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:07:41,690 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 [2022-11-19 07:07:41,722 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 [2022-11-19 07:07:41,730 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 [2022-11-19 07:07:41,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,751 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 [2022-11-19 07:07:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,816 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 [2022-11-19 07:07:41,828 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 [2022-11-19 07:07:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,839 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 [2022-11-19 07:07:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,909 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:41,910 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 [2022-11-19 07:07:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,950 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 [2022-11-19 07:07:41,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,961 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 [2022-11-19 07:07:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,973 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 [2022-11-19 07:07:41,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:41,986 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 [2022-11-19 07:07:42,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,049 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:42,050 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 [2022-11-19 07:07:42,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,083 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 [2022-11-19 07:07:42,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,096 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 [2022-11-19 07:07:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,107 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 [2022-11-19 07:07:42,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,120 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 [2022-11-19 07:07:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,186 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 [2022-11-19 07:07:42,197 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 [2022-11-19 07:07:42,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,213 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 [2022-11-19 07:07:42,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,278 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:42,278 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 [2022-11-19 07:07:42,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,326 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 [2022-11-19 07:07:42,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,337 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 [2022-11-19 07:07:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,348 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 [2022-11-19 07:07:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,364 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 [2022-11-19 07:07:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,425 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:42,425 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 [2022-11-19 07:07:42,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,463 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 [2022-11-19 07:07:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,478 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 [2022-11-19 07:07:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,489 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 [2022-11-19 07:07:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,502 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 [2022-11-19 07:07:42,566 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 [2022-11-19 07:07:42,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,731 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:42,731 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 [2022-11-19 07:07:42,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,860 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:42,860 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 [2022-11-19 07:07:42,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:42,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,032 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:07:43,032 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 [2022-11-19 07:07:43,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,105 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:43,106 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 [2022-11-19 07:07:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,173 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:07:43,173 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 [2022-11-19 07:07:43,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,257 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:07:43,257 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 [2022-11-19 07:07:43,276 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:07:43,283 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 [2022-11-19 07:07:43,288 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 [2022-11-19 07:07:43,297 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 [2022-11-19 07:07:43,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:07:43,308 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 [2022-11-19 07:07:43,322 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 [2022-11-19 07:07:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,329 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 [2022-11-19 07:07:43,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,337 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 [2022-11-19 07:07:43,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:43,380 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:07:43,381 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 [2022-11-19 07:07:43,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:43,416 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:07:43,416 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 [2022-11-19 07:07:43,428 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 [2022-11-19 07:07:43,446 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 [2022-11-19 07:07:43,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:43,472 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:07:43,472 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 [2022-11-19 07:07:43,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:07:43,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:07:43,498 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:07:43,498 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 [2022-11-19 07:07:43,503 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:07:43,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:07:55,183 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17700#(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 [2022-11-19 07:07:55,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:07:55,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:07:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 51 [2022-11-19 07:07:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472489856] [2022-11-19 07:07:55,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:07:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 07:07:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 07:07:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=7068, Unknown=8, NotChecked=342, Total=7832 [2022-11-19 07:07:55,186 INFO L87 Difference]: Start difference. First operand 285 states and 339 transitions. Second operand has 52 states, 39 states have (on average 2.358974358974359) internal successors, (92), 50 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) [2022-11-19 07:08:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:00,564 INFO L93 Difference]: Finished difference Result 352 states and 417 transitions. [2022-11-19 07:08:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 07:08:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 39 states have (on average 2.358974358974359) internal successors, (92), 50 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 [2022-11-19 07:08:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:00,567 INFO L225 Difference]: With dead ends: 352 [2022-11-19 07:08:00,567 INFO L226 Difference]: Without dead ends: 352 [2022-11-19 07:08:00,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3424 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=525, Invalid=8590, Unknown=13, NotChecked=378, Total=9506 [2022-11-19 07:08:00,569 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 169 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1244 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:00,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1241 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1775 Invalid, 0 Unknown, 1244 Unchecked, 3.1s Time] [2022-11-19 07:08:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-19 07:08:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 285. [2022-11-19 07:08:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.380952380952381) internal successors, (290), 253 states have internal predecessors, (290), 28 states have call successors, (28), 14 states have call predecessors, (28), 13 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:08:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 338 transitions. [2022-11-19 07:08:00,578 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 338 transitions. Word has length 55 [2022-11-19 07:08:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:00,579 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 338 transitions. [2022-11-19 07:08:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 39 states have (on average 2.358974358974359) internal successors, (92), 50 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) [2022-11-19 07:08:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 338 transitions. [2022-11-19 07:08:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:08:00,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:00,580 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] [2022-11-19 07:08:00,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-19 07:08:00,787 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:08:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1315294452, now seen corresponding path program 1 times [2022-11-19 07:08:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:00,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950057974] [2022-11-19 07:08:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:08:03,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950057974] [2022-11-19 07:08:03,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950057974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:03,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469407446] [2022-11-19 07:08:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:03,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:03,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 07:08:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:03,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-19 07:08:03,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:03,985 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 [2022-11-19 07:08:04,005 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-19 07:08:04,006 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 [2022-11-19 07:08:04,213 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:08:04,213 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 [2022-11-19 07:08:04,286 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:04,286 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 [2022-11-19 07:08:04,587 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5186 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5185 (Array Int Int))) (and (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| (select |c_#valid| |chain_node_~node~0#1.base|))) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5185) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5186)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:08:04,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:04,631 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:08:04,631 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 [2022-11-19 07:08:04,654 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-11-19 07:08:04,655 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 [2022-11-19 07:08:04,667 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 [2022-11-19 07:08:04,676 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 20 treesize of output 14 [2022-11-19 07:08:04,835 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 32 treesize of output 24 [2022-11-19 07:08:04,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:08:04,844 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 24 treesize of output 29 [2022-11-19 07:08:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:05,330 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:08:05,330 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 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 07:08:05,368 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-19 07:08:05,368 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 35 treesize of output 60 [2022-11-19 07:08:05,608 INFO L321 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2022-11-19 07:08:05,609 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 [2022-11-19 07:08:05,803 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 [2022-11-19 07:08:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-11-19 07:08:12,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:12,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469407446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:12,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537625930] [2022-11-19 07:08:12,623 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:08:12,623 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:12,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:12,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:12,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,658 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 [2022-11-19 07:08:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,745 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:12,745 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 [2022-11-19 07:08:12,762 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 [2022-11-19 07:08:12,766 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 [2022-11-19 07:08:12,773 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 [2022-11-19 07:08:12,778 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 [2022-11-19 07:08:12,783 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 [2022-11-19 07:08:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,793 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 [2022-11-19 07:08:12,800 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 [2022-11-19 07:08:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,809 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 [2022-11-19 07:08:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,857 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:08:12,857 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 42 [2022-11-19 07:08:12,867 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 [2022-11-19 07:08:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,908 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:08:12,908 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 [2022-11-19 07:08:12,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:12,966 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:08:12,966 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 [2022-11-19 07:08:12,978 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 [2022-11-19 07:08:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,052 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:08:13,052 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 [2022-11-19 07:08:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,112 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 [2022-11-19 07:08:13,123 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 [2022-11-19 07:08:13,133 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 [2022-11-19 07:08:13,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,227 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:13,227 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 [2022-11-19 07:08:13,263 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 [2022-11-19 07:08:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,288 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 [2022-11-19 07:08:13,297 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 [2022-11-19 07:08:13,357 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 [2022-11-19 07:08:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,371 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 [2022-11-19 07:08:13,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,389 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 [2022-11-19 07:08:13,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,455 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:13,455 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 [2022-11-19 07:08:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,498 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 [2022-11-19 07:08:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,510 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 [2022-11-19 07:08:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,522 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 [2022-11-19 07:08:13,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,536 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 [2022-11-19 07:08:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,600 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:13,601 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 [2022-11-19 07:08:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,643 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 [2022-11-19 07:08:13,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,654 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 [2022-11-19 07:08:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,666 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 [2022-11-19 07:08:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,679 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 [2022-11-19 07:08:13,746 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 15 treesize of output 1 [2022-11-19 07:08:13,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,759 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 [2022-11-19 07:08:13,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,775 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 [2022-11-19 07:08:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,840 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:13,841 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 [2022-11-19 07:08:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,882 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 [2022-11-19 07:08:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,894 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 [2022-11-19 07:08:13,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,907 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 [2022-11-19 07:08:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,919 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 [2022-11-19 07:08:13,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,986 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:13,987 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 [2022-11-19 07:08:14,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,026 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 [2022-11-19 07:08:14,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,039 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 [2022-11-19 07:08:14,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,052 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 [2022-11-19 07:08:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,066 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 [2022-11-19 07:08:14,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,165 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:14,165 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 [2022-11-19 07:08:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,242 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:14,242 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 [2022-11-19 07:08:14,498 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:08:14,498 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 [2022-11-19 07:08:14,793 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 [2022-11-19 07:08:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,950 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:08:14,951 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 [2022-11-19 07:08:14,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,024 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:15,024 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 [2022-11-19 07:08:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,108 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:15,108 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 [2022-11-19 07:08:15,127 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:08:15,155 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 [2022-11-19 07:08:15,179 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 [2022-11-19 07:08:15,244 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 [2022-11-19 07:08:15,280 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 [2022-11-19 07:08:15,292 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 [2022-11-19 07:08:15,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,350 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 [2022-11-19 07:08:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,381 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 [2022-11-19 07:08:15,426 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 [2022-11-19 07:08:15,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,551 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:08:15,551 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 [2022-11-19 07:08:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,631 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:08:15,631 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 [2022-11-19 07:08:15,673 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 [2022-11-19 07:08:15,748 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 [2022-11-19 07:08:15,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,783 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:08:15,783 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 [2022-11-19 07:08:15,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,849 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:08:15,849 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 [2022-11-19 07:08:15,863 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:08:15,957 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:08:25,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18644#(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|) (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_92| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_92|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_92|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_92|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_92| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_92|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_92|) 0))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|) 0) |check_seq_next_#in~end.offset|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|) 0) |check_seq_next_#in~beg.offset|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236| 2)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215|) 0) |check_seq_next_#in~end.base|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_215| 2)) (= |check_seq_next_#in~beg.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_236|) 0)))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:08:25,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:08:25,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:08:25,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30] total 45 [2022-11-19 07:08:25,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235206494] [2022-11-19 07:08:25,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:08:25,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-19 07:08:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-19 07:08:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4545, Unknown=14, NotChecked=136, Total=4970 [2022-11-19 07:08:25,988 INFO L87 Difference]: Start difference. First operand 285 states and 338 transitions. Second operand has 46 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 42 states have internal predecessors, (81), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:08:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:28,927 INFO L93 Difference]: Finished difference Result 295 states and 345 transitions. [2022-11-19 07:08:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 07:08:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 42 states have internal predecessors, (81), 9 states have call successors, (9), 5 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 56 [2022-11-19 07:08:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:28,930 INFO L225 Difference]: With dead ends: 295 [2022-11-19 07:08:28,930 INFO L226 Difference]: Without dead ends: 295 [2022-11-19 07:08:28,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=451, Invalid=6837, Unknown=26, NotChecked=168, Total=7482 [2022-11-19 07:08:28,931 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 134 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 564 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:28,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1238 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1944 Invalid, 0 Unknown, 564 Unchecked, 1.7s Time] [2022-11-19 07:08:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-19 07:08:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 285. [2022-11-19 07:08:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.3714285714285714) internal successors, (288), 253 states have internal predecessors, (288), 28 states have call successors, (28), 14 states have call predecessors, (28), 13 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:08:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 336 transitions. [2022-11-19 07:08:28,940 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 336 transitions. Word has length 56 [2022-11-19 07:08:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:28,940 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 336 transitions. [2022-11-19 07:08:28,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 42 states have internal predecessors, (81), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 07:08:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 336 transitions. [2022-11-19 07:08:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:08:28,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:28,941 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] [2022-11-19 07:08:28,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:29,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:29,155 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:08:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1315294453, now seen corresponding path program 1 times [2022-11-19 07:08:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:29,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226209299] [2022-11-19 07:08:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:08:35,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:35,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226209299] [2022-11-19 07:08:35,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226209299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:35,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488167668] [2022-11-19 07:08:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:35,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:35,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:35,787 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:35,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-19 07:08:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:36,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-19 07:08:36,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:36,691 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 [2022-11-19 07:08:36,695 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 [2022-11-19 07:08:37,085 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:08:37,085 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 [2022-11-19 07:08:37,111 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:08:37,111 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 [2022-11-19 07:08:37,234 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:37,235 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 [2022-11-19 07:08:37,241 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:37,241 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 [2022-11-19 07:08:37,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,962 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:08:37,962 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 [2022-11-19 07:08:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,011 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:08:38,011 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 [2022-11-19 07:08:38,037 INFO L321 Elim1Store]: treesize reduction 24, result has 36.8 percent of original size [2022-11-19 07:08:38,037 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 [2022-11-19 07:08:38,045 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 [2022-11-19 07:08:38,066 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 [2022-11-19 07:08:38,083 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 [2022-11-19 07:08:38,141 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 [2022-11-19 07:08:38,437 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 62 treesize of output 50 [2022-11-19 07:08:38,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:08:38,485 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 50 treesize of output 91 [2022-11-19 07:08:38,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:08:38,502 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 42 treesize of output 47 [2022-11-19 07:08:38,511 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 [2022-11-19 07:08:39,345 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5484 (Array Int Int)) (v_ArrVal_5483 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5476 Int) (v_ArrVal_5482 (Array Int Int)) (v_ArrVal_5481 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5481) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5483)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5482) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5484) |c_#memory_$Pointer$.base|) (= |c_#length| (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_5476)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:08:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,422 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:08:39,422 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 2 case distinctions, treesize of input 72 treesize of output 80 [2022-11-19 07:08:39,470 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-19 07:08:39,470 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 63 treesize of output 78 [2022-11-19 07:08:39,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:08:39,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 132 [2022-11-19 07:08:39,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,615 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:08:39,616 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 2 case distinctions, treesize of input 21 treesize of output 33 [2022-11-19 07:08:40,276 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 [2022-11-19 07:08:40,294 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 [2022-11-19 07:08:40,577 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 [2022-11-19 07:08:40,809 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 [2022-11-19 07:08:40,812 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 [2022-11-19 07:08:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 15 refuted. 4 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-19 07:08:41,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:41,568 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 [2022-11-19 07:08:43,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488167668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [417358193] [2022-11-19 07:08:43,590 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:08:43,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:43,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:43,591 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:43,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:43,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,628 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 [2022-11-19 07:08:43,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,708 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:43,708 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 [2022-11-19 07:08:43,723 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 [2022-11-19 07:08:43,727 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 [2022-11-19 07:08:43,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:43,739 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 [2022-11-19 07:08:43,744 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 [2022-11-19 07:08:43,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,755 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 [2022-11-19 07:08:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,790 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 [2022-11-19 07:08:43,797 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 [2022-11-19 07:08:43,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,845 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:08:43,845 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 [2022-11-19 07:08:43,856 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 [2022-11-19 07:08:43,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,897 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:08:43,897 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 [2022-11-19 07:08:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,956 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:08:43,957 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 [2022-11-19 07:08:43,969 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 [2022-11-19 07:08:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,047 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:08:44,047 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 [2022-11-19 07:08:44,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,100 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 [2022-11-19 07:08:44,108 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 [2022-11-19 07:08:44,116 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 [2022-11-19 07:08:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,192 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:44,192 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 [2022-11-19 07:08:44,222 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 [2022-11-19 07:08:44,230 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 [2022-11-19 07:08:44,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,254 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 [2022-11-19 07:08:44,318 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 [2022-11-19 07:08:44,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,332 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 [2022-11-19 07:08:44,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-19 07:08:44,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,409 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:44,410 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 [2022-11-19 07:08:44,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,449 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 [2022-11-19 07:08:44,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,467 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 [2022-11-19 07:08:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,479 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 [2022-11-19 07:08:44,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,490 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 [2022-11-19 07:08:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,555 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:44,556 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 [2022-11-19 07:08:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,594 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 [2022-11-19 07:08:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,606 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 [2022-11-19 07:08:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,618 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 [2022-11-19 07:08:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,631 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 [2022-11-19 07:08:44,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,697 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 [2022-11-19 07:08:44,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,710 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 [2022-11-19 07:08:44,721 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 [2022-11-19 07:08:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,792 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:44,792 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 [2022-11-19 07:08:44,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,832 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 [2022-11-19 07:08:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,845 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 [2022-11-19 07:08:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,857 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 [2022-11-19 07:08:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,872 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 [2022-11-19 07:08:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,939 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:44,939 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 [2022-11-19 07:08:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,981 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 [2022-11-19 07:08:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:44,994 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 [2022-11-19 07:08:45,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,006 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 [2022-11-19 07:08:45,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,021 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 [2022-11-19 07:08:45,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,133 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:45,133 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 [2022-11-19 07:08:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,206 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:45,207 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 [2022-11-19 07:08:45,404 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:08:45,405 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 [2022-11-19 07:08:45,713 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 [2022-11-19 07:08:45,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,866 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:08:45,866 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 [2022-11-19 07:08:45,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:45,959 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:08:45,959 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 [2022-11-19 07:08:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,049 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:08:46,050 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 [2022-11-19 07:08:46,066 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:08:46,106 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 [2022-11-19 07:08:46,116 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 [2022-11-19 07:08:46,170 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 [2022-11-19 07:08:46,196 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 [2022-11-19 07:08:46,231 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 [2022-11-19 07:08:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,274 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 [2022-11-19 07:08:46,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,315 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 [2022-11-19 07:08:46,328 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 [2022-11-19 07:08:46,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:46,482 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:08:46,483 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 [2022-11-19 07:08:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:46,565 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:08:46,565 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 [2022-11-19 07:08:46,585 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 [2022-11-19 07:08:46,682 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 [2022-11-19 07:08:46,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:46,757 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:08:46,758 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 [2022-11-19 07:08:46,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:46,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:46,812 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:08:46,813 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 [2022-11-19 07:08:46,827 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:08:46,956 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:08:58,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19547#(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_~#list~0#1.base_96| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_96|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_96| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_96|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_96|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_96|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_96|)))) (or (not (<= (+ check_seq_next_~beg.offset 4) (select |#length| check_seq_next_~beg.base))) (not (<= 0 check_seq_next_~beg.offset))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|) 0) |check_seq_next_#in~beg.base|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|) 0) |check_seq_next_#in~end.offset|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250| 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|) 0) |check_seq_next_#in~end.base|) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_227| 2)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|) 0) |check_seq_next_#in~beg.offset|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_250|))) (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 [2022-11-19 07:08:58,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:08:58,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:08:58,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2022-11-19 07:08:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034065286] [2022-11-19 07:08:58,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:08:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 07:08:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 07:08:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=5987, Unknown=12, NotChecked=156, Total=6480 [2022-11-19 07:08:58,893 INFO L87 Difference]: Start difference. First operand 285 states and 336 transitions. Second operand has 52 states, 43 states have (on average 2.046511627906977) internal successors, (88), 48 states have internal predecessors, (88), 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) [2022-11-19 07:09:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:05,273 INFO L93 Difference]: Finished difference Result 300 states and 347 transitions. [2022-11-19 07:09:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:09:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 43 states have (on average 2.046511627906977) internal successors, (88), 48 states have internal predecessors, (88), 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 [2022-11-19 07:09:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:05,276 INFO L225 Difference]: With dead ends: 300 [2022-11-19 07:09:05,276 INFO L226 Difference]: Without dead ends: 300 [2022-11-19 07:09:05,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2602 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=472, Invalid=8253, Unknown=21, NotChecked=184, Total=8930 [2022-11-19 07:09:05,277 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 109 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 976 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:05,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1502 Invalid, 3594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2593 Invalid, 0 Unknown, 976 Unchecked, 3.2s Time] [2022-11-19 07:09:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-19 07:09:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2022-11-19 07:09:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 216 states have (on average 1.3518518518518519) internal successors, (292), 259 states have internal predecessors, (292), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:09:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 340 transitions. [2022-11-19 07:09:05,285 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 340 transitions. Word has length 56 [2022-11-19 07:09:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:05,286 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 340 transitions. [2022-11-19 07:09:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 43 states have (on average 2.046511627906977) internal successors, (88), 48 states have internal predecessors, (88), 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) [2022-11-19 07:09:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 340 transitions. [2022-11-19 07:09:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:09:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:05,287 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] [2022-11-19 07:09:05,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:09:05,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-19 07:09:05,499 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:09:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1266949588, now seen corresponding path program 1 times [2022-11-19 07:09:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:05,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845362931] [2022-11-19 07:09:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:09:07,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:07,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845362931] [2022-11-19 07:09:07,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845362931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:07,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68396508] [2022-11-19 07:09:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:07,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:07,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:07,362 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:07,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:09:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:07,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-19 07:09:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:08,182 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 [2022-11-19 07:09:08,475 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:09:08,475 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 32 treesize of output 23 [2022-11-19 07:09:08,565 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:08,566 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 28 treesize of output 12 [2022-11-19 07:09:08,570 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 [2022-11-19 07:09:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:09,081 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-19 07:09:09,081 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 48 treesize of output 56 [2022-11-19 07:09:09,100 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-19 07:09:09,101 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 14 treesize of output 16 [2022-11-19 07:09:09,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-19 07:09:09,142 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 22 treesize of output 16 [2022-11-19 07:09:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:09,377 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-19 07:09:09,377 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 44 treesize of output 57 [2022-11-19 07:09:09,612 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 [2022-11-19 07:09:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:09:10,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:09:10,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68396508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:10,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512886029] [2022-11-19 07:09:10,385 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:09:10,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:09:10,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:09:10,385 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:09:10,385 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:09:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,445 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 [2022-11-19 07:09:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,542 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:09:10,543 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 [2022-11-19 07:09:10,561 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 [2022-11-19 07:09:10,566 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 [2022-11-19 07:09:10,574 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 [2022-11-19 07:09:10,580 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 [2022-11-19 07:09:10,586 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 [2022-11-19 07:09:10,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,601 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 [2022-11-19 07:09:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,610 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 [2022-11-19 07:09:10,618 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 [2022-11-19 07:09:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,674 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:09:10,674 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 [2022-11-19 07:09:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,727 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:09:10,727 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 [2022-11-19 07:09:10,738 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 [2022-11-19 07:09:10,756 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 [2022-11-19 07:09:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,830 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:09:10,830 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 [2022-11-19 07:09:10,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,890 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:09:10,891 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 [2022-11-19 07:09:10,926 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 [2022-11-19 07:09:10,934 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 [2022-11-19 07:09:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,960 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 [2022-11-19 07:09:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:10,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,032 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:09:11,033 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 [2022-11-19 07:09:11,070 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 [2022-11-19 07:09:11,080 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 [2022-11-19 07:09:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,104 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 [2022-11-19 07:09:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,167 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 [2022-11-19 07:09:11,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,180 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 [2022-11-19 07:09:11,194 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 [2022-11-19 07:09:11,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,262 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:11,263 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 [2022-11-19 07:09:11,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,306 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 11 treesize of output 7 [2022-11-19 07:09:11,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,318 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 [2022-11-19 07:09:11,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,329 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 [2022-11-19 07:09:11,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,343 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 [2022-11-19 07:09:11,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,408 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:11,408 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 [2022-11-19 07:09:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,450 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 [2022-11-19 07:09:11,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,465 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 [2022-11-19 07:09:11,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,478 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 [2022-11-19 07:09:11,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,489 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 [2022-11-19 07:09:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,588 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:11,588 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 [2022-11-19 07:09:11,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:11,664 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:11,665 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 [2022-11-19 07:09:11,885 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:09:11,885 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 [2022-11-19 07:09:12,179 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 [2022-11-19 07:09:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,196 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 [2022-11-19 07:09:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,209 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 [2022-11-19 07:09:12,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,277 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:12,277 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 [2022-11-19 07:09:12,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,315 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 [2022-11-19 07:09:12,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,328 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 [2022-11-19 07:09:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,340 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 [2022-11-19 07:09:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,351 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 [2022-11-19 07:09:12,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,417 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:12,417 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 [2022-11-19 07:09:12,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,461 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 [2022-11-19 07:09:12,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,472 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 [2022-11-19 07:09:12,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,483 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 [2022-11-19 07:09:12,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,494 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 [2022-11-19 07:09:12,562 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 [2022-11-19 07:09:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,724 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:09:12,724 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 [2022-11-19 07:09:12,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,799 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:09:12,799 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 [2022-11-19 07:09:12,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:12,879 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:09:12,880 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 [2022-11-19 07:09:12,899 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:09:12,938 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 [2022-11-19 07:09:12,961 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 [2022-11-19 07:09:12,998 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 [2022-11-19 07:09:13,037 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 [2022-11-19 07:09:13,062 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 [2022-11-19 07:09:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,114 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 21 treesize of output 20 [2022-11-19 07:09:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,144 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 [2022-11-19 07:09:13,178 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 [2022-11-19 07:09:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:13,315 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:09:13,315 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 [2022-11-19 07:09:13,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:13,377 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:09:13,377 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 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 07:09:13,420 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 [2022-11-19 07:09:13,497 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 [2022-11-19 07:09:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:13,532 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:09:13,532 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 [2022-11-19 07:09:13,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:13,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:13,600 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:09:13,601 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 [2022-11-19 07:09:13,612 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:09:13,727 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:09:24,504 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20452#(and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239| 2)) (= |check_seq_next_#in~end.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|) 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|) 0) |check_seq_next_#in~beg.base|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265| 2)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|) 0) |check_seq_next_#in~end.base|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|) 0) |check_seq_next_#in~beg.offset|) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_239|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_265|)))) (= 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_100| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_100|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_100| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_100|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_100|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_100|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_100| 2)))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:09:24,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:09:24,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:09:24,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20] total 48 [2022-11-19 07:09:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059721990] [2022-11-19 07:09:24,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:09:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-19 07:09:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:24,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-19 07:09:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=5082, Unknown=21, NotChecked=0, Total=5402 [2022-11-19 07:09:24,506 INFO L87 Difference]: Start difference. First operand 292 states and 340 transitions. Second operand has 49 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-19 07:09:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:27,980 INFO L93 Difference]: Finished difference Result 299 states and 352 transitions. [2022-11-19 07:09:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 07:09:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2022-11-19 07:09:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:27,982 INFO L225 Difference]: With dead ends: 299 [2022-11-19 07:09:27,982 INFO L226 Difference]: Without dead ends: 299 [2022-11-19 07:09:27,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=456, Invalid=7162, Unknown=38, NotChecked=0, Total=7656 [2022-11-19 07:09:27,983 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 46 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 887 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:27,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1915 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2156 Invalid, 0 Unknown, 887 Unchecked, 2.0s Time] [2022-11-19 07:09:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-19 07:09:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 292. [2022-11-19 07:09:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 216 states have (on average 1.3472222222222223) internal successors, (291), 259 states have internal predecessors, (291), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 07:09:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 339 transitions. [2022-11-19 07:09:27,991 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 339 transitions. Word has length 56 [2022-11-19 07:09:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:27,992 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 339 transitions. [2022-11-19 07:09:27,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 45 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-19 07:09:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 339 transitions. [2022-11-19 07:09:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 07:09:27,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:27,993 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] [2022-11-19 07:09:28,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-19 07:09:28,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:28,201 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:09:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1209652173, now seen corresponding path program 1 times [2022-11-19 07:09:28,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:28,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026974286] [2022-11-19 07:09:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:28,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:09:40,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:40,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026974286] [2022-11-19 07:09:40,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026974286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:40,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592640663] [2022-11-19 07:09:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:40,413 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:40,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 07:09:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:40,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 241 conjunts are in the unsatisfiable core [2022-11-19 07:09:40,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:40,950 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-19 07:09:40,950 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 [2022-11-19 07:09:41,119 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:41,119 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 [2022-11-19 07:09:41,385 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 [2022-11-19 07:09:41,396 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 [2022-11-19 07:09:41,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:09:41,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:09:41,774 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:09:41,774 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 19 treesize of output 26 [2022-11-19 07:09:41,798 INFO L321 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-11-19 07:09:41,798 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 22 [2022-11-19 07:09:41,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,998 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-19 07:09:41,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 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 [2022-11-19 07:09:42,731 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:09:42,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 51 [2022-11-19 07:09:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,767 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:09:42,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-19 07:09:43,019 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:43,019 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 58 treesize of output 29 [2022-11-19 07:09:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,032 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:43,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 07:09:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,038 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 [2022-11-19 07:09:43,576 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6011 (Array Int Int)) (v_ArrVal_6014 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_6010 (Array Int Int))) (and (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| (select |c_#valid| |chain_node_~node~0#1.base|))) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_6011))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) |c_#memory_$Pointer$.offset|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_6010) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6014) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:09:43,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,667 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-19 07:09:43,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 87 [2022-11-19 07:09:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,760 INFO L321 Elim1Store]: treesize reduction 73, result has 24.7 percent of original size [2022-11-19 07:09:43,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 108 [2022-11-19 07:09:43,780 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 [2022-11-19 07:09:43,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,845 INFO L321 Elim1Store]: treesize reduction 46, result has 33.3 percent of original size [2022-11-19 07:09:43,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-19 07:09:43,872 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 67 treesize of output 47 [2022-11-19 07:09:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:43,988 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 [2022-11-19 07:09:44,096 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 49 treesize of output 35 [2022-11-19 07:09:44,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:44,190 INFO L321 Elim1Store]: treesize reduction 84, result has 24.3 percent of original size [2022-11-19 07:09:44,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 140 treesize of output 136 [2022-11-19 07:09:44,208 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 [2022-11-19 07:09:44,300 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 106 treesize of output 102 [2022-11-19 07:09:46,324 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-19 07:09:46,324 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 284 treesize of output 275 [2022-11-19 07:09:46,538 INFO L321 Elim1Store]: treesize reduction 227, result has 29.3 percent of original size [2022-11-19 07:09:46,539 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 283 treesize of output 346 [2022-11-19 07:09:47,407 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 [2022-11-19 07:09:47,491 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 [2022-11-19 07:09:48,698 INFO L321 Elim1Store]: treesize reduction 17, result has 41.4 percent of original size [2022-11-19 07:09:48,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 127 treesize of output 103 [2022-11-19 07:09:48,789 INFO L321 Elim1Store]: treesize reduction 28, result has 68.5 percent of original size [2022-11-19 07:09:48,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 100 treesize of output 146 [2022-11-19 07:09:48,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:09:48,807 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 96 [2022-11-19 07:09:49,281 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 [2022-11-19 07:09:49,691 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 20 [2022-11-19 07:09:49,928 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimArr_11 (Array Int Int)) (v_ArrVal_6027 (Array Int Int)) (v_ArrVal_6028 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_6020 (Array Int Int))) (and (= 0 (select v_arrayElimArr_11 4)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_6020 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_6020) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6028)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_arrayElimArr_11) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6027)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:09:49,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:49,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:49,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,166 INFO L321 Elim1Store]: treesize reduction 148, result has 38.1 percent of original size [2022-11-19 07:09:50,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 143 treesize of output 212 [2022-11-19 07:09:50,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,359 INFO L321 Elim1Store]: treesize reduction 32, result has 72.6 percent of original size [2022-11-19 07:09:50,359 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 117 treesize of output 185 [2022-11-19 07:09:50,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,481 INFO L321 Elim1Store]: treesize reduction 64, result has 43.9 percent of original size [2022-11-19 07:09:50,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 182 treesize of output 207 [2022-11-19 07:09:50,512 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 [2022-11-19 07:09:57,596 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 22 treesize of output 16 [2022-11-19 07:09:57,728 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 22 treesize of output 16 [2022-11-19 07:09:57,794 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 22 treesize of output 16 [2022-11-19 07:09:58,009 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 22 treesize of output 16 [2022-11-19 07:09:58,058 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 22 treesize of output 16 [2022-11-19 07:09:58,299 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 22 treesize of output 16 [2022-11-19 07:09:58,349 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 22 treesize of output 16 [2022-11-19 07:09:58,800 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 22 treesize of output 16 [2022-11-19 07:09:58,858 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 22 treesize of output 16 [2022-11-19 07:09:59,155 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 22 treesize of output 16 [2022-11-19 07:09:59,220 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 22 treesize of output 16 [2022-11-19 07:09:59,931 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 22 treesize of output 16 [2022-11-19 07:10:00,081 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 22 treesize of output 16 [2022-11-19 07:10:00,159 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 22 treesize of output 16 [2022-11-19 07:10:00,253 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 22 treesize of output 16 [2022-11-19 07:10:00,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-19 07:10:05,729 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,740 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,750 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,770 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,781 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,792 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,810 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,821 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,832 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,847 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,858 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,869 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,894 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,905 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,916 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,934 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,945 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:05,971 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:06,026 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 [2022-11-19 07:10:06,174 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 42 treesize of output 30 [2022-11-19 07:10:06,374 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 22 treesize of output 16 [2022-11-19 07:10:06,464 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 [2022-11-19 07:10:06,560 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 12 treesize of output 8 [2022-11-19 07:10:07,257 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 [2022-11-19 07:10:07,403 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 17 treesize of output 11 [2022-11-19 07:10:07,515 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 12 treesize of output 8 [2022-11-19 07:10:07,634 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 12 treesize of output 8 [2022-11-19 07:10:07,790 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 12 treesize of output 8 [2022-11-19 07:10:07,997 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 [2022-11-19 07:10:08,335 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 12 treesize of output 8 [2022-11-19 07:10:08,343 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 12 treesize of output 8 [2022-11-19 07:10:08,430 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 12 treesize of output 8 [2022-11-19 07:10:08,719 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 12 treesize of output 8 [2022-11-19 07:10:08,727 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 12 treesize of output 8 [2022-11-19 07:10:08,771 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 12 treesize of output 8 [2022-11-19 07:10:08,914 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 [2022-11-19 07:10:08,993 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 5 treesize of output 3 [2022-11-19 07:10:09,215 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 [2022-11-19 07:10:09,291 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 [2022-11-19 07:10:09,650 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 41 treesize of output 33 [2022-11-19 07:10:09,680 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 41 treesize of output 33 [2022-11-19 07:10:09,876 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 12 treesize of output 8 [2022-11-19 07:10:10,038 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 12 treesize of output 8 [2022-11-19 07:10:10,110 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 48 treesize of output 34 [2022-11-19 07:10:10,416 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 12 treesize of output 8 [2022-11-19 07:10:10,592 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 12 treesize of output 8 [2022-11-19 07:10:10,770 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 42 treesize of output 34 [2022-11-19 07:10:10,804 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 [2022-11-19 07:10:40,805 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 [2022-11-19 07:10:42,221 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-19 07:10:42,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 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 [2022-11-19 07:10:46,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:46,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:46,434 INFO L321 Elim1Store]: treesize reduction 52, result has 13.3 percent of original size [2022-11-19 07:10:46,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 133 treesize of output 66 [2022-11-19 07:10:46,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,454 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:10:46,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 24 [2022-11-19 07:10:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-11-19 07:10:46,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:58,593 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:09,123 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:19,692 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:20,314 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:11:20,314 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 [2022-11-19 07:11:20,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:11:20,886 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 250 treesize of output 214 [2022-11-19 07:11:21,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592640663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [491532497] [2022-11-19 07:11:21,840 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-11-19 07:11:21,840 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:11:21,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:11:21,841 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:11:21,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:11:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,884 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 [2022-11-19 07:11:21,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:21,969 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:11:21,969 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 [2022-11-19 07:11:21,988 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 [2022-11-19 07:11:21,998 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 [2022-11-19 07:11:22,005 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 [2022-11-19 07:11:22,011 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 [2022-11-19 07:11:22,017 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 [2022-11-19 07:11:22,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,031 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 [2022-11-19 07:11:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,040 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 21 treesize of output 20 [2022-11-19 07:11:22,047 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 [2022-11-19 07:11:22,064 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 [2022-11-19 07:11:22,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,109 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:11:22,109 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 [2022-11-19 07:11:22,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,173 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:11:22,173 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 [2022-11-19 07:11:22,199 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 [2022-11-19 07:11:22,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,290 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:11:22,290 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 [2022-11-19 07:11:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,363 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:11:22,363 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 [2022-11-19 07:11:22,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,427 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 [2022-11-19 07:11:22,436 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 [2022-11-19 07:11:22,447 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 [2022-11-19 07:11:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,538 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:11:22,539 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 [2022-11-19 07:11:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,590 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 [2022-11-19 07:11:22,601 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 [2022-11-19 07:11:22,612 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 [2022-11-19 07:11:22,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,679 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 [2022-11-19 07:11:22,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,692 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 [2022-11-19 07:11:22,704 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 [2022-11-19 07:11:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,780 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:22,780 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 [2022-11-19 07:11:22,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,821 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 [2022-11-19 07:11:22,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,833 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 [2022-11-19 07:11:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,845 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 [2022-11-19 07:11:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,862 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 [2022-11-19 07:11:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,933 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:22,933 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 [2022-11-19 07:11:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,980 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 [2022-11-19 07:11:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:22,994 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 [2022-11-19 07:11:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,006 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 [2022-11-19 07:11:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,020 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 [2022-11-19 07:11:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,093 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 [2022-11-19 07:11:23,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,107 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 15 treesize of output 15 [2022-11-19 07:11:23,122 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 [2022-11-19 07:11:23,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,198 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:23,198 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 [2022-11-19 07:11:23,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,258 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 [2022-11-19 07:11:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,271 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 [2022-11-19 07:11:23,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,282 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 [2022-11-19 07:11:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,300 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 [2022-11-19 07:11:23,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,373 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:23,373 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 [2022-11-19 07:11:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,419 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 [2022-11-19 07:11:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,434 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 [2022-11-19 07:11:23,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,447 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 [2022-11-19 07:11:23,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,461 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 [2022-11-19 07:11:23,527 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 [2022-11-19 07:11:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,690 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:11:23,691 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 [2022-11-19 07:11:23,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:23,839 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:11:23,839 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 [2022-11-19 07:11:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,051 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:11:24,052 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 [2022-11-19 07:11:24,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,139 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:24,139 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 [2022-11-19 07:11:24,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,223 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:11:24,223 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 [2022-11-19 07:11:24,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,321 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:11:24,322 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 [2022-11-19 07:11:24,341 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-19 07:11:24,348 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 [2022-11-19 07:11:24,353 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 [2022-11-19 07:11:24,364 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 [2022-11-19 07:11:24,370 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 [2022-11-19 07:11:24,376 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 [2022-11-19 07:11:24,391 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 [2022-11-19 07:11:24,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,400 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 [2022-11-19 07:11:24,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,409 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 21 treesize of output 20 [2022-11-19 07:11:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:24,465 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:11:24,465 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 [2022-11-19 07:11:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:24,505 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:11:24,506 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 38 [2022-11-19 07:11:24,519 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 [2022-11-19 07:11:24,538 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 [2022-11-19 07:11:24,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:24,566 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:11:24,567 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 [2022-11-19 07:11:24,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:24,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:24,597 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:11:24,598 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 [2022-11-19 07:11:24,607 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:11:24,747 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 70 for LOIs [2022-11-19 07:11:24,760 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:11:43,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21425#(and (or (exists ((|v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0))) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 4)) (not (= 0 (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 4)))) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|)) (= (select |#valid| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 1) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0)) 1) (<= 0 |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|))) (exists ((|v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280| Int)) (and (not (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 4)) 0)) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0))) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0) 4)) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|)) (= (select |#valid| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 1) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|) 0)) 1) (<= 0 |v_ULTIMATE.start_main_~#p2~0#1.base_BEFORE_CALL_280|)))) (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302| Int)) (and (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0)) 1) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0) 4)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0) 4)) 0) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0) 4)) 0) (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|) 0))) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_302|))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:11:43,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:11:43,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:11:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39] total 66 [2022-11-19 07:11:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510344521] [2022-11-19 07:11:43,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:11:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-19 07:11:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-19 07:11:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=11714, Unknown=16, NotChecked=438, Total=12656 [2022-11-19 07:11:43,405 INFO L87 Difference]: Start difference. First operand 292 states and 339 transitions. Second operand has 66 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 63 states have internal predecessors, (93), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:11:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:56,023 INFO L93 Difference]: Finished difference Result 364 states and 426 transitions. [2022-11-19 07:11:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-19 07:11:56,023 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 63 states have internal predecessors, (93), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 58 [2022-11-19 07:11:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:56,026 INFO L225 Difference]: With dead ends: 364 [2022-11-19 07:11:56,026 INFO L226 Difference]: Without dead ends: 364 [2022-11-19 07:11:56,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4584 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=636, Invalid=14359, Unknown=19, NotChecked=486, Total=15500 [2022-11-19 07:11:56,027 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 120 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1402 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:56,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1746 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2230 Invalid, 0 Unknown, 1402 Unchecked, 5.1s Time] [2022-11-19 07:11:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-19 07:11:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 346. [2022-11-19 07:11:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 262 states have (on average 1.316793893129771) internal successors, (345), 305 states have internal predecessors, (345), 35 states have call successors, (35), 16 states have call predecessors, (35), 15 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-19 07:11:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 407 transitions. [2022-11-19 07:11:56,038 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 407 transitions. Word has length 58 [2022-11-19 07:11:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:56,038 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 407 transitions. [2022-11-19 07:11:56,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 63 states have internal predecessors, (93), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:11:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 407 transitions. [2022-11-19 07:11:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:11:56,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:56,040 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, 1, 1, 1, 1] [2022-11-19 07:11:56,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:56,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:56,250 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:11:56,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:56,250 INFO L85 PathProgramCache]: Analyzing trace with hash -152721249, now seen corresponding path program 1 times [2022-11-19 07:11:56,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:56,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910060966] [2022-11-19 07:11:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:56,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:12:11,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910060966] [2022-11-19 07:12:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910060966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676865855] [2022-11-19 07:12:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:11,509 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:11,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-19 07:12:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:12,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 185 conjunts are in the unsatisfiable core [2022-11-19 07:12:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:12,679 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 [2022-11-19 07:12:13,122 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:12:13,123 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 [2022-11-19 07:12:13,132 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 [2022-11-19 07:12:13,327 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 [2022-11-19 07:12:13,332 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 [2022-11-19 07:12:14,596 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 [2022-11-19 07:12:14,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:14,888 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 34 treesize of output 29 [2022-11-19 07:12:14,895 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 29 treesize of output 24 [2022-11-19 07:12:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:14,903 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 15 treesize of output 7 [2022-11-19 07:12:14,914 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 [2022-11-19 07:12:15,604 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-19 07:12:15,605 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 48 treesize of output 41 [2022-11-19 07:12:15,642 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:12:15,642 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 [2022-11-19 07:12:15,883 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:12:15,883 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 44 treesize of output 23 [2022-11-19 07:12:15,893 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:12:15,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-19 07:12:15,899 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 [2022-11-19 07:12:16,872 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6320 (Array Int Int)) (v_ArrVal_6321 (Array Int Int)) (v_ArrVal_6325 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_6321) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6325)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_6320))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (not (= |chain_node_~node~0#1.base| 0)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:12:16,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:16,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:16,938 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-19 07:12:16,939 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 28 treesize of output 40 [2022-11-19 07:12:16,950 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 [2022-11-19 07:12:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:16,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:17,017 INFO L321 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2022-11-19 07:12:17,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 70 [2022-11-19 07:12:17,038 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-19 07:12:17,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-19 07:12:17,061 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 16 treesize of output 13 [2022-11-19 07:12:17,105 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-11-19 07:12:17,881 INFO L321 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-11-19 07:12:17,881 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 95 treesize of output 87 [2022-11-19 07:12:17,893 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 [2022-11-19 07:12:19,354 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6330 (Array Int Int)) (v_ArrVal_6333 (Array Int Int)) (v_ArrVal_6335 (Array Int Int)) (v_ArrVal_6334 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_6333) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6334) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_6330 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_6330) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6335)))) is different from true [2022-11-19 07:12:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:19,536 INFO L321 Elim1Store]: treesize reduction 93, result has 37.2 percent of original size [2022-11-19 07:12:19,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 112 treesize of output 146 [2022-11-19 07:12:19,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:19,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:19,572 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:12:19,572 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 21 treesize of output 29 [2022-11-19 07:12:19,592 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 [2022-11-19 07:12:20,409 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 29 treesize of output 21 [2022-11-19 07:12:20,439 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 42 treesize of output 32 [2022-11-19 07:12:20,463 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 36 treesize of output 26 [2022-11-19 07:12:20,490 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 32 treesize of output 22 [2022-11-19 07:12:20,536 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 27 treesize of output 19 [2022-11-19 07:12:22,896 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 [2022-11-19 07:12:24,024 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 [2022-11-19 07:12:24,558 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 07:12:24,559 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 [2022-11-19 07:12:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:25,575 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-19 07:12:25,575 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 2 case distinctions, treesize of input 62 treesize of output 37 [2022-11-19 07:12:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-19 07:12:25,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:26,302 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:12:26,303 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 [2022-11-19 07:12:27,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676865855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:27,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961628741] [2022-11-19 07:12:27,202 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 07:12:27,202 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:12:27,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:12:27,203 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:12:27,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:12:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,255 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 [2022-11-19 07:12:27,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,343 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:12:27,344 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 [2022-11-19 07:12:27,363 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 [2022-11-19 07:12:27,367 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 [2022-11-19 07:12:27,375 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 [2022-11-19 07:12:27,380 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 [2022-11-19 07:12:27,386 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 [2022-11-19 07:12:27,396 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 [2022-11-19 07:12:27,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,404 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 [2022-11-19 07:12:27,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,413 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 [2022-11-19 07:12:27,428 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 [2022-11-19 07:12:27,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,473 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:12:27,473 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 [2022-11-19 07:12:27,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,522 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-19 07:12:27,523 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 [2022-11-19 07:12:27,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,591 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-19 07:12:27,591 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 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-19 07:12:27,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,676 INFO L321 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-19 07:12:27,676 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 [2022-11-19 07:12:27,727 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 [2022-11-19 07:12:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,773 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 [2022-11-19 07:12:27,783 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 [2022-11-19 07:12:27,795 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 [2022-11-19 07:12:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,882 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:12:27,882 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 [2022-11-19 07:12:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:27,932 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 [2022-11-19 07:12:27,941 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 [2022-11-19 07:12:27,953 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 [2022-11-19 07:12:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-19 07:12:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,036 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 [2022-11-19 07:12:28,050 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 [2022-11-19 07:12:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,118 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,118 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 [2022-11-19 07:12:28,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,162 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 [2022-11-19 07:12:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,184 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 [2022-11-19 07:12:28,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,197 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 [2022-11-19 07:12:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,214 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 [2022-11-19 07:12:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,287 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,288 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 [2022-11-19 07:12:28,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,332 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 [2022-11-19 07:12:28,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,345 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 [2022-11-19 07:12:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,360 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 [2022-11-19 07:12:28,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,375 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 [2022-11-19 07:12:28,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,442 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 [2022-11-19 07:12:28,457 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 [2022-11-19 07:12:28,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,473 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 [2022-11-19 07:12:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,547 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,547 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 [2022-11-19 07:12:28,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,588 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 [2022-11-19 07:12:28,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,602 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 [2022-11-19 07:12:28,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,614 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 [2022-11-19 07:12:28,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,627 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 [2022-11-19 07:12:28,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,705 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,706 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 [2022-11-19 07:12:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,748 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 [2022-11-19 07:12:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,764 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 [2022-11-19 07:12:28,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,778 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 [2022-11-19 07:12:28,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,791 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 [2022-11-19 07:12:28,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,894 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,895 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 [2022-11-19 07:12:28,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:28,980 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:28,980 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 [2022-11-19 07:12:29,215 INFO L321 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-19 07:12:29,215 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 [2022-11-19 07:12:29,527 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 [2022-11-19 07:12:29,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,675 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:12:29,676 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 [2022-11-19 07:12:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,753 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-19 07:12:29,754 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 [2022-11-19 07:12:29,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:29,844 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-19 07:12:29,844 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 [2022-11-19 07:12:29,863 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-19 07:12:29,888 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 [2022-11-19 07:12:29,922 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 [2022-11-19 07:12:29,972 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 [2022-11-19 07:12:29,998 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 [2022-11-19 07:12:30,010 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 [2022-11-19 07:12:30,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,065 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 [2022-11-19 07:12:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,110 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 [2022-11-19 07:12:30,144 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 [2022-11-19 07:12:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:30,289 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:12:30,290 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 [2022-11-19 07:12:30,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:30,369 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-19 07:12:30,370 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 32 treesize of output 38 [2022-11-19 07:12:30,393 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 [2022-11-19 07:12:30,494 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 [2022-11-19 07:12:30,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:30,546 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:12:30,547 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 [2022-11-19 07:12:30,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:30,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:30,600 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:12:30,600 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 [2022-11-19 07:12:30,611 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-19 07:12:30,891 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 107 for LOIs [2022-11-19 07:12:31,042 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:12:51,843 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22502#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_108| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_108|) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_108|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_108|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_108| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_108|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_108| 2)))) (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 2)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 2)) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 0)))))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 2)) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 0)))) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 2)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 2)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 2)) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 0)))))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 2)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) 0) (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) 1) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294| 2)) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_294|) 0) 0)))) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_266|)))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:12:51,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:12:51,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:51,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39] total 72 [2022-11-19 07:12:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442187701] [2022-11-19 07:12:51,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:12:51,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-19 07:12:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-19 07:12:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=9915, Unknown=34, NotChecked=402, Total=10712 [2022-11-19 07:12:51,846 INFO L87 Difference]: Start difference. First operand 346 states and 407 transitions. Second operand has 72 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 66 states have internal predecessors, (97), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:13:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:11,610 INFO L93 Difference]: Finished difference Result 424 states and 496 transitions. [2022-11-19 07:13:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-19 07:13:11,610 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 66 states have internal predecessors, (97), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 60 [2022-11-19 07:13:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:11,612 INFO L225 Difference]: With dead ends: 424 [2022-11-19 07:13:11,612 INFO L226 Difference]: Without dead ends: 424 [2022-11-19 07:13:11,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4273 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=658, Invalid=16597, Unknown=45, NotChecked=522, Total=17822 [2022-11-19 07:13:11,614 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 327 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 6065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1963 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:11,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2380 Invalid, 6065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3987 Invalid, 0 Unknown, 1963 Unchecked, 6.0s Time] [2022-11-19 07:13:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-19 07:13:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 348. [2022-11-19 07:13:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 264 states have (on average 1.3181818181818181) internal successors, (348), 307 states have internal predecessors, (348), 35 states have call successors, (35), 16 states have call predecessors, (35), 15 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-19 07:13:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2022-11-19 07:13:11,625 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 60 [2022-11-19 07:13:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:11,626 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2022-11-19 07:13:11,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 66 states have internal predecessors, (97), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:13:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2022-11-19 07:13:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:13:11,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:11,627 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, 1, 1, 1, 1] [2022-11-19 07:13:11,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-19 07:13:11,836 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-19 07:13:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1464825473, now seen corresponding path program 1 times [2022-11-19 07:13:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509205906] [2022-11-19 07:13:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:13:16,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509205906] [2022-11-19 07:13:16,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509205906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:13:16,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52781513] [2022-11-19 07:13:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:16,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:13:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:13:16,031 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:13:16,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd02742-b2ad-4836-9e0a-7715de654f88/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-19 07:13:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:16,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-19 07:13:16,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:16,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:13:16,998 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 [2022-11-19 07:13:17,566 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 [2022-11-19 07:13:17,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:17,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:17,720 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 39 treesize of output 32 [2022-11-19 07:13:17,725 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 32 treesize of output 25 [2022-11-19 07:13:17,733 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 [2022-11-19 07:13:18,169 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-19 07:13:18,169 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 68 treesize of output 49 [2022-11-19 07:13:18,207 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:13:18,207 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 [2022-11-19 07:13:18,723 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_6627 (Array Int Int)) (v_ArrVal_6626 (Array Int Int)) (v_ArrVal_6629 (Array Int Int)) (v_ArrVal_6628 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_6627) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6628)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_6626) |c_chain_node_#in~ppnode#1.base| v_ArrVal_6629) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-19 07:13:18,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:18,788 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-19 07:13:18,788 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 [2022-11-19 07:13:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:18,854 INFO L321 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-19 07:13:18,854 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 73 treesize of output 83 [2022-11-19 07:13:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:18,884 INFO L321 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-11-19 07:13:18,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 20 [2022-11-19 07:13:18,909 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 55 treesize of output 43 [2022-11-19 07:13:18,986 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 [2022-11-19 07:13:19,333 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 [2022-11-19 07:13:19,698 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:13:19,699 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 [2022-11-19 07:13:19,704 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 [2022-11-19 07:13:20,376 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2022-11-19 07:13:20,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 93 [2022-11-19 07:13:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-19 07:13:20,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:21,121 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