./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9 --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 3a59620f668b7c0725f940bc66e10441fbb56ee9b9fb687de4bd19a3f12eaeda --- 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-6b4ec56 [2022-11-20 21:10:27,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:10:27,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:10:27,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:10:27,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:10:27,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:10:27,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:10:27,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:10:27,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:10:27,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:10:27,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:10:27,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:10:27,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:10:27,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:10:27,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:10:27,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:10:27,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:10:27,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:10:27,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:10:27,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:10:27,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:10:27,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:10:27,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:10:27,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:10:27,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:10:27,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:10:27,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:10:27,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:10:27,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:10:27,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:10:27,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:10:27,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:10:27,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:10:27,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:10:27,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:10:27,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:10:27,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:10:27,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:10:27,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:10:27,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:10:27,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:10:27,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 21:10:27,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:10:27,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:10:27,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:10:27,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:10:27,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:10:27,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:10:27,649 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:10:27,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:10:27,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:10:27,650 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:10:27,651 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:10:27,651 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:10:27,651 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:10:27,652 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:10:27,652 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:10:27,652 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:10:27,652 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:10:27,653 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:10:27,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 21:10:27,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 21:10:27,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:10:27,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:10:27,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:10:27,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:10:27,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:10:27,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:10:27,656 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 21:10:27,656 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 21:10:27,657 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 21:10:27,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:10:27,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:10:27,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:10:27,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:10:27,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:10:27,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:10:27,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:10:27,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:10:27,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:10:27,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:10:27,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:10:27,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:10:27,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:10:27,670 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_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a59620f668b7c0725f940bc66e10441fbb56ee9b9fb687de4bd19a3f12eaeda [2022-11-20 21:10:28,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:10:28,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:10:28,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:10:28,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:10:28,080 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:10:28,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/list-simple/dll2n_append_equal.i [2022-11-20 21:10:31,225 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:10:31,457 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:10:31,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/sv-benchmarks/c/list-simple/dll2n_append_equal.i [2022-11-20 21:10:31,469 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/data/b48706f24/9f35442af5c145a8abd96fd9d70cfea1/FLAG9cfe5c69d [2022-11-20 21:10:31,488 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/data/b48706f24/9f35442af5c145a8abd96fd9d70cfea1 [2022-11-20 21:10:31,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:10:31,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:10:31,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:10:31,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:10:31,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:10:31,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:31,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c10fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31, skipping insertion in model container [2022-11-20 21:10:31,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:31,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:10:31,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:10:31,858 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/sv-benchmarks/c/list-simple/dll2n_append_equal.i[24333,24346] [2022-11-20 21:10:31,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:10:31,890 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:10:31,961 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/sv-benchmarks/c/list-simple/dll2n_append_equal.i[24333,24346] [2022-11-20 21:10:31,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:10:31,989 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:10:31,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31 WrapperNode [2022-11-20 21:10:31,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:10:31,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:10:31,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:10:31,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:10:31,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,041 INFO L138 Inliner]: procedures = 127, calls = 37, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 125 [2022-11-20 21:10:32,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:10:32,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:10:32,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:10:32,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:10:32,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:10:32,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:10:32,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:10:32,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:10:32,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (1/1) ... [2022-11-20 21:10:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:10:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:32,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:10:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:10:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:10:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:10:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-20 21:10:32,165 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:10:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:10:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:10:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:10:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:10:32,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:10:32,343 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:10:32,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:10:32,926 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:10:32,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:10:32,988 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 21:10:32,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:10:32 BoogieIcfgContainer [2022-11-20 21:10:32,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:10:32,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:10:32,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:10:32,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:10:32,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:10:31" (1/3) ... [2022-11-20 21:10:32,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aa001f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:10:32, skipping insertion in model container [2022-11-20 21:10:32,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:31" (2/3) ... [2022-11-20 21:10:32,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aa001f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:10:32, skipping insertion in model container [2022-11-20 21:10:32,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:10:32" (3/3) ... [2022-11-20 21:10:33,001 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2022-11-20 21:10:33,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:10:33,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-20 21:10:33,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:10:33,074 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;@5d30d27f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:10:33,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-20 21:10:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 80 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 21:10:33,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:33,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 21:10:33,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1862710451, now seen corresponding path program 1 times [2022-11-20 21:10:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:33,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42489856] [2022-11-20 21:10:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:33,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42489856] [2022-11-20 21:10:33,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42489856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:33,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:33,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:10:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144603385] [2022-11-20 21:10:33,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:33,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:33,477 INFO L87 Difference]: Start difference. First operand has 84 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 80 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2022-11-20 21:10:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:33,536 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2022-11-20 21:10:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 [2022-11-20 21:10:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:33,547 INFO L225 Difference]: With dead ends: 98 [2022-11-20 21:10:33,547 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 21:10:33,549 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 [2022-11-20 21:10:33,552 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 13 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:33,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 157 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 21:10:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2022-11-20 21:10:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 79 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-11-20 21:10:33,596 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 6 [2022-11-20 21:10:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:33,597 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-11-20 21:10:33,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2022-11-20 21:10:33,597 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-11-20 21:10:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 21:10:33,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:33,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 21:10:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:10:33,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1703805257, now seen corresponding path program 1 times [2022-11-20 21:10:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:33,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205926466] [2022-11-20 21:10:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:33,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:33,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205926466] [2022-11-20 21:10:33,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205926466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:33,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:33,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:10:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958158452] [2022-11-20 21:10:33,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:33,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:33,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:33,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:33,697 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2022-11-20 21:10:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:33,792 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-11-20 21:10:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:33,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2022-11-20 21:10:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:33,794 INFO L225 Difference]: With dead ends: 80 [2022-11-20 21:10:33,794 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 21:10:33,795 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 [2022-11-20 21:10:33,796 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:33,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 21:10:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-20 21:10:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 39 states have (on average 2.128205128205128) internal successors, (83), 76 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2022-11-20 21:10:33,808 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 6 [2022-11-20 21:10:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:33,808 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2022-11-20 21:10:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2022-11-20 21:10:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2022-11-20 21:10:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 21:10:33,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:33,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 21:10:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:10:33,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1703805258, now seen corresponding path program 1 times [2022-11-20 21:10:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437858875] [2022-11-20 21:10:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:33,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:33,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437858875] [2022-11-20 21:10:33,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437858875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:33,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:33,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:10:33,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163980474] [2022-11-20 21:10:33,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:33,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:33,980 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2022-11-20 21:10:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:34,129 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-11-20 21:10:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:34,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2022-11-20 21:10:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:34,131 INFO L225 Difference]: With dead ends: 77 [2022-11-20 21:10:34,131 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 21:10:34,131 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 [2022-11-20 21:10:34,132 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:34,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 21:10:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-20 21:10:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 39 states have (on average 2.051282051282051) internal successors, (80), 73 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2022-11-20 21:10:34,140 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 6 [2022-11-20 21:10:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:34,141 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2022-11-20 21:10:34,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2022-11-20 21:10:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2022-11-20 21:10:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 21:10:34,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:34,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:10:34,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash 468485873, now seen corresponding path program 1 times [2022-11-20 21:10:34,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:34,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648249300] [2022-11-20 21:10:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:34,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:34,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:34,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648249300] [2022-11-20 21:10:34,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648249300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:34,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:34,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:10:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569448895] [2022-11-20 21:10:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:34,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:10:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:10:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:10:34,484 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 21:10:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:34,726 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-11-20 21:10:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:10:34,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2022-11-20 21:10:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:34,732 INFO L225 Difference]: With dead ends: 76 [2022-11-20 21:10:34,732 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 21:10:34,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:10:34,738 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:34,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 210 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:10:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 21:10:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-11-20 21:10:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 39 states have (on average 2.0) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2022-11-20 21:10:34,745 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 11 [2022-11-20 21:10:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:34,746 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2022-11-20 21:10:34,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 21:10:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2022-11-20 21:10:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 21:10:34,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:34,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:10:34,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 468485872, now seen corresponding path program 1 times [2022-11-20 21:10:34,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128008188] [2022-11-20 21:10:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:34,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128008188] [2022-11-20 21:10:34,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128008188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:34,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:34,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:10:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722967579] [2022-11-20 21:10:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:10:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:10:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:10:34,893 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 21:10:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:35,103 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-11-20 21:10:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:10:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2022-11-20 21:10:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:35,108 INFO L225 Difference]: With dead ends: 74 [2022-11-20 21:10:35,108 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 21:10:35,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:10:35,118 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 12 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:35,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 198 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:10:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 21:10:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-20 21:10:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:10:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-20 21:10:35,124 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 11 [2022-11-20 21:10:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:35,125 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-20 21:10:35,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 21:10:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-20 21:10:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:10:35,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:35,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:35,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:10:35,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1981111996, now seen corresponding path program 1 times [2022-11-20 21:10:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355481036] [2022-11-20 21:10:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:35,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:35,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355481036] [2022-11-20 21:10:35,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355481036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:35,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:35,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:10:35,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101840835] [2022-11-20 21:10:35,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:35,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:35,217 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 21:10:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:35,257 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2022-11-20 21:10:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2022-11-20 21:10:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:35,258 INFO L225 Difference]: With dead ends: 79 [2022-11-20 21:10:35,259 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 21:10:35,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:35,260 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 21:10:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2022-11-20 21:10:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 73 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:10:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2022-11-20 21:10:35,267 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 14 [2022-11-20 21:10:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:35,268 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2022-11-20 21:10:35,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 21:10:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2022-11-20 21:10:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 21:10:35,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:35,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:35,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:10:35,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash -191097445, now seen corresponding path program 1 times [2022-11-20 21:10:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:35,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878877919] [2022-11-20 21:10:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:10:35,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:35,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878877919] [2022-11-20 21:10:35,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878877919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:35,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639574909] [2022-11-20 21:10:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:35,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:35,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:35,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:10:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:35,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:10:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:35,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:10:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:10:35,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639574909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:10:35,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36942341] [2022-11-20 21:10:35,710 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 21:10:35,710 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:10:35,715 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:10:35,733 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:10:35,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:10:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:35,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:10:35,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:35,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:35,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:10:35,952 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 [2022-11-20 21:10:35,957 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 [2022-11-20 21:10:35,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:35,977 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 13 treesize of output 9 [2022-11-20 21:10:35,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:10:36,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:36,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:36,026 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 19 treesize of output 1 [2022-11-20 21:10:36,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:36,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:10:36,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:10:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:10:36,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:10:36,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:36,466 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:10:36,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:36,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:10:36,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:36,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:36,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:10:36,636 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:10:36,657 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:10:36,723 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 27 treesize of output 11 [2022-11-20 21:10:36,943 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:10:36,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 191 [2022-11-20 21:10:37,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:10:37,191 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 202 treesize of output 194 [2022-11-20 21:10:37,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 180 [2022-11-20 21:10:37,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:10:37,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:10:37,414 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:10:37,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 191 [2022-11-20 21:10:37,652 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 [2022-11-20 21:10:37,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:10:37,684 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 190 treesize of output 182 [2022-11-20 21:10:37,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:10:37,773 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 [2022-11-20 21:10:37,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:37,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:37,873 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 15 treesize of output 1 [2022-11-20 21:10:37,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:37,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:10:37,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:37,987 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 [2022-11-20 21:10:37,996 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 7 treesize of output 3 [2022-11-20 21:10:38,006 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 9 treesize of output 3 [2022-11-20 21:10:38,015 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 9 treesize of output 3 [2022-11-20 21:10:38,029 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 [2022-11-20 21:10:38,067 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 7 treesize of output 3 [2022-11-20 21:10:38,076 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 [2022-11-20 21:10:38,085 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 [2022-11-20 21:10:38,094 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 9 treesize of output 3 [2022-11-20 21:10:38,105 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 9 treesize of output 3 [2022-11-20 21:10:38,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:38,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:38,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:38,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:38,211 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 13 treesize of output 9 [2022-11-20 21:10:38,220 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 27 treesize of output 11 [2022-11-20 21:10:38,459 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:10:38,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:10:39,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:39,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1122 treesize of output 1124 [2022-11-20 21:10:40,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:40,525 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 5 case distinctions, treesize of input 162 treesize of output 195 [2022-11-20 21:10:40,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:40,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:40,555 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 154 treesize of output 151 [2022-11-20 21:10:40,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:40,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:40,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 140 [2022-11-20 21:10:40,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:40,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:40,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 134 [2022-11-20 21:10:40,647 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 [2022-11-20 21:10:41,692 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:10:41,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:10:42,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:42,160 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 545 treesize of output 555 [2022-11-20 21:10:42,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:42,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:42,431 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 162 treesize of output 159 [2022-11-20 21:10:42,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:42,478 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 5 case distinctions, treesize of input 150 treesize of output 183 [2022-11-20 21:10:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:42,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:42,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 140 [2022-11-20 21:10:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:42,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:42,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 134 [2022-11-20 21:10:42,572 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 [2022-11-20 21:10:43,383 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:10:43,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:10:44,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:10:44,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1017 treesize of output 1019 [2022-11-20 21:10:45,508 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:10:45,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 235 [2022-11-20 21:10:45,723 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:10:45,736 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 [2022-11-20 21:10:45,743 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 [2022-11-20 21:10:45,763 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 19 treesize of output 1 [2022-11-20 21:10:45,768 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 13 treesize of output 9 [2022-11-20 21:10:45,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:45,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:45,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:45,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:10:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:45,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:45,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:45,837 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 11 treesize of output 7 [2022-11-20 21:10:45,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:45,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:45,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:45,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:10:48,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1208#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:10:48,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:10:48,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:10:48,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-20 21:10:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331775403] [2022-11-20 21:10:48,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:10:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:10:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:10:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-20 21:10:48,767 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:10:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:48,819 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2022-11-20 21:10:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:10:48,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2022-11-20 21:10:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:48,821 INFO L225 Difference]: With dead ends: 80 [2022-11-20 21:10:48,821 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 21:10:48,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-20 21:10:48,822 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:48,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 21:10:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-20 21:10:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 75 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:10:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-11-20 21:10:48,830 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 24 [2022-11-20 21:10:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-11-20 21:10:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:10:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-11-20 21:10:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 21:10:48,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:48,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 21:10:48,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:10:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:49,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 730044177, now seen corresponding path program 1 times [2022-11-20 21:10:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:49,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468608907] [2022-11-20 21:10:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:49,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:49,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468608907] [2022-11-20 21:10:49,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468608907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:49,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605547560] [2022-11-20 21:10:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:49,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:49,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:49,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:10:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:49,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 21:10:49,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:49,614 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 [2022-11-20 21:10:49,655 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_332 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_332))) is different from true [2022-11-20 21:10:49,678 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_332 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_332))) is different from true [2022-11-20 21:10:49,695 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 21:10:49,695 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 12 treesize of output 18 [2022-11-20 21:10:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-20 21:10:49,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:10:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:50,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605547560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:10:50,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950820233] [2022-11-20 21:10:50,022 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 21:10:50,022 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:10:50,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:10:50,023 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:10:50,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:10:50,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:10:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:10:50,104 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 [2022-11-20 21:10:50,108 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 [2022-11-20 21:10:50,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:50,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:50,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:50,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:10:50,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:50,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:10:50,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:10:50,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:10:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:10:50,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:10:50,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:10:50,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:10:50,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,375 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 27 treesize of output 11 [2022-11-20 21:10:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:50,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:10:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:10:50,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:10:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,460 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:10:50,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:10:50,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,494 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 17 treesize of output 7 [2022-11-20 21:10:50,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:10:50,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:10:50,527 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 [2022-11-20 21:10:50,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:10:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,569 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:10:50,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:10:50,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:10:50,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:10:50,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:10:50,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:10:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:10:50,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:10:50,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:50,782 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 27 treesize of output 11 [2022-11-20 21:10:50,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:50,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:50,858 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 7 treesize of output 3 [2022-11-20 21:10:50,872 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 9 treesize of output 3 [2022-11-20 21:10:50,880 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 [2022-11-20 21:10:50,890 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 [2022-11-20 21:10:50,898 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 9 treesize of output 3 [2022-11-20 21:10:50,933 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 9 treesize of output 3 [2022-11-20 21:10:50,942 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 [2022-11-20 21:10:50,952 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 9 treesize of output 3 [2022-11-20 21:10:50,960 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 7 treesize of output 3 [2022-11-20 21:10:50,969 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 [2022-11-20 21:10:51,012 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 11 treesize of output 7 [2022-11-20 21:10:51,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:51,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:10:51,058 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 27 treesize of output 11 [2022-11-20 21:10:51,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:51,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:10:51,283 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:10:51,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 241 [2022-11-20 21:10:51,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:10:51,527 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 83 for LOIs [2022-11-20 21:10:51,675 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:10:56,912 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1560#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) |ULTIMATE.start_dll_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (not (= (select |#valid| |ULTIMATE.start_dll_create_~head~0#1.base|) 1)) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (<= |ULTIMATE.start_dll_create_~len#1| 2) (<= (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2022-11-20 21:10:56,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:10:56,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:10:56,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 19 [2022-11-20 21:10:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107903120] [2022-11-20 21:10:56,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:10:56,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 21:10:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 21:10:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=856, Unknown=2, NotChecked=122, Total=1122 [2022-11-20 21:10:56,915 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 20 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 21:10:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:57,411 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2022-11-20 21:10:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 21:10:57,412 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-11-20 21:10:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:57,413 INFO L225 Difference]: With dead ends: 79 [2022-11-20 21:10:57,413 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 21:10:57,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=169, Invalid=1027, Unknown=2, NotChecked=134, Total=1332 [2022-11-20 21:10:57,415 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:57,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 439 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 463 Invalid, 0 Unknown, 255 Unchecked, 0.4s Time] [2022-11-20 21:10:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 21:10:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-20 21:10:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.8) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:10:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2022-11-20 21:10:57,421 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2022-11-20 21:10:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:57,421 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2022-11-20 21:10:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 21:10:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2022-11-20 21:10:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 21:10:57,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:57,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 21:10:57,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:10:57,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:57,624 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:10:57,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 730044178, now seen corresponding path program 1 times [2022-11-20 21:10:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:57,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672271060] [2022-11-20 21:10:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:57,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:58,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:58,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672271060] [2022-11-20 21:10:58,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672271060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:58,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601033293] [2022-11-20 21:10:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:58,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:58,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:58,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:58,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:10:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:58,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 21:10:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:58,271 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 [2022-11-20 21:10:58,276 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 [2022-11-20 21:10:58,571 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 21:10:58,572 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 12 treesize of output 18 [2022-11-20 21:10:58,587 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:10:58,587 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 [2022-11-20 21:10:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:58,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:00,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601033293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1534742614] [2022-11-20 21:11:00,886 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 21:11:00,886 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:00,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:00,887 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:00,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:00,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:00,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:00,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:00,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:00,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:00,969 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 [2022-11-20 21:11:00,974 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 [2022-11-20 21:11:00,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:00,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:00,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:01,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:01,010 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 19 treesize of output 1 [2022-11-20 21:11:01,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:01,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:01,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:01,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:01,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:01,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:01,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:01,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:01,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:01,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:01,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:01,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,347 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:01,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:01,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:01,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:11:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:01,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,484 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:01,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:01,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:01,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:01,574 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 [2022-11-20 21:11:01,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:01,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,759 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 259 [2022-11-20 21:11:01,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 250 [2022-11-20 21:11:01,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:01,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 254 [2022-11-20 21:11:01,883 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 0 case distinctions, treesize of input 267 treesize of output 248 [2022-11-20 21:11:01,900 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 0 case distinctions, treesize of input 255 treesize of output 236 [2022-11-20 21:11:01,950 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 27 treesize of output 11 [2022-11-20 21:11:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,008 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:02,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:02,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:02,057 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 [2022-11-20 21:11:02,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:11:02,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:11:02,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,137 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:02,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:02,172 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 [2022-11-20 21:11:02,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:02,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:02,203 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 19 treesize of output 7 [2022-11-20 21:11:02,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:11:02,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:02,329 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 259 [2022-11-20 21:11:02,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:02,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:02,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 250 [2022-11-20 21:11:02,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:02,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:02,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 254 [2022-11-20 21:11:02,498 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 27 treesize of output 11 [2022-11-20 21:11:02,511 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 0 case distinctions, treesize of input 267 treesize of output 248 [2022-11-20 21:11:02,529 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 0 case distinctions, treesize of input 255 treesize of output 236 [2022-11-20 21:11:02,879 INFO L321 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2022-11-20 21:11:02,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 263 treesize of output 269 [2022-11-20 21:11:02,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:02,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 21:11:03,006 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 86 for LOIs [2022-11-20 21:11:03,176 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:10,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1858#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) |ULTIMATE.start_dll_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_create_~data#1|) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= |ULTIMATE.start_dll_create_#in~data#1| |ULTIMATE.start_dll_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (< |ULTIMATE.start_dll_create_~new_head~0#1.base| |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (= |ULTIMATE.start_dll_create_#in~len#1| (+ |ULTIMATE.start_dll_create_~len#1| 1)) (<= 1 |ULTIMATE.start_dll_create_~len#1|) (< |ULTIMATE.start_dll_create_~head~0#1.base| |#StackHeapBarrier|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#s~0#1.base|) 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (< (select |#length| |ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12)) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= |ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2022-11-20 21:11:10,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:10,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:11:10,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2022-11-20 21:11:10,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143555441] [2022-11-20 21:11:10,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:10,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 21:11:10,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 21:11:10,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 21:11:10,957 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 20 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:11:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:11,733 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2022-11-20 21:11:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:11:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2022-11-20 21:11:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:11,735 INFO L225 Difference]: With dead ends: 79 [2022-11-20 21:11:11,735 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 21:11:11,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 21:11:11,737 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:11,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 490 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 105 Unchecked, 0.4s Time] [2022-11-20 21:11:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 21:11:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2022-11-20 21:11:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 73 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2022-11-20 21:11:11,743 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 27 [2022-11-20 21:11:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:11,743 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2022-11-20 21:11:11,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:11:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2022-11-20 21:11:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 21:11:11,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:11,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:11,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:11,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:11,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1838551256, now seen corresponding path program 2 times [2022-11-20 21:11:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:11,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373240246] [2022-11-20 21:11:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 21:11:12,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373240246] [2022-11-20 21:11:12,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373240246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702591163] [2022-11-20 21:11:12,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:11:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:12,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:12,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:11:12,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:11:12,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:11:12,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 21:11:12,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:12,485 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 [2022-11-20 21:11:12,515 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (not (= |node_create_~temp~0#1.base| 0)) (exists ((v_ArrVal_648 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_648))))) is different from true [2022-11-20 21:11:12,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 21:11:12,550 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:12,551 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 [2022-11-20 21:11:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 7 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:11:12,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:12,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702591163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:11:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709877689] [2022-11-20 21:11:12,725 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 21:11:12,725 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:12,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:12,726 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:12,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:12,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:12,790 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 [2022-11-20 21:11:12,794 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 [2022-11-20 21:11:12,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:12,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:12,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:12,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:12,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:12,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:12,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:12,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:12,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:12,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:12,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:13,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:13,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:13,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:13,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,094 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 27 treesize of output 11 [2022-11-20 21:11:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:13,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:13,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,142 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:13,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:13,186 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 [2022-11-20 21:11:13,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,196 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 17 treesize of output 7 [2022-11-20 21:11:13,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:13,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:13,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:13,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,253 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:13,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:13,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:13,297 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 [2022-11-20 21:11:13,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:13,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:13,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:13,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:13,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:13,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:13,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,439 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 27 treesize of output 11 [2022-11-20 21:11:13,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:13,487 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 7 treesize of output 3 [2022-11-20 21:11:13,497 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 9 treesize of output 3 [2022-11-20 21:11:13,510 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 [2022-11-20 21:11:13,521 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 9 treesize of output 3 [2022-11-20 21:11:13,535 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 5 treesize of output 3 [2022-11-20 21:11:13,570 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 [2022-11-20 21:11:13,578 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 9 treesize of output 3 [2022-11-20 21:11:13,586 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 7 treesize of output 3 [2022-11-20 21:11:13,598 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 9 treesize of output 3 [2022-11-20 21:11:13,606 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 [2022-11-20 21:11:13,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:13,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:13,653 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 11 treesize of output 7 [2022-11-20 21:11:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:13,667 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 27 treesize of output 11 [2022-11-20 21:11:13,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:13,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:13,869 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:11:13,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:11:14,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:14,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1113 treesize of output 1119 [2022-11-20 21:11:15,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:15,106 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 5 case distinctions, treesize of input 162 treesize of output 195 [2022-11-20 21:11:15,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:15,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:15,139 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 154 treesize of output 151 [2022-11-20 21:11:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:15,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:15,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 140 [2022-11-20 21:11:15,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:15,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:15,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 134 [2022-11-20 21:11:15,231 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 [2022-11-20 21:11:15,756 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:11:15,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:11:16,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:16,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 887 treesize of output 897 [2022-11-20 21:11:17,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:17,107 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 5 case distinctions, treesize of input 162 treesize of output 195 [2022-11-20 21:11:17,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:17,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:17,134 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 154 treesize of output 151 [2022-11-20 21:11:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:17,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:17,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 140 [2022-11-20 21:11:17,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:17,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:17,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 134 [2022-11-20 21:11:17,205 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 [2022-11-20 21:11:17,811 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:11:17,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 224 [2022-11-20 21:11:18,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:18,143 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 545 treesize of output 555 [2022-11-20 21:11:18,601 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:11:18,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 235 [2022-11-20 21:11:18,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:11:18,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:18,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2022-11-20 21:11:19,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:11:19,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:11:19,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:19,088 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:11:19,097 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 [2022-11-20 21:11:19,102 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 [2022-11-20 21:11:19,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:19,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:19,130 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 13 treesize of output 9 [2022-11-20 21:11:19,141 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 [2022-11-20 21:11:19,148 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 23 treesize of output 22 [2022-11-20 21:11:19,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:19,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:19,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:19,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:19,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:19,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:19,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:19,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:21,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2271#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:21,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:21,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:21,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2022-11-20 21:11:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491548650] [2022-11-20 21:11:21,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:21,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 21:11:21,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 21:11:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=619, Unknown=1, NotChecked=50, Total=756 [2022-11-20 21:11:21,690 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:11:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:22,019 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2022-11-20 21:11:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 21:11:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2022-11-20 21:11:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:22,020 INFO L225 Difference]: With dead ends: 78 [2022-11-20 21:11:22,020 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 21:11:22,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=135, Invalid=1058, Unknown=1, NotChecked=66, Total=1260 [2022-11-20 21:11:22,022 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 18 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:22,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 451 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2022-11-20 21:11:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 21:11:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-20 21:11:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2022-11-20 21:11:22,026 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 37 [2022-11-20 21:11:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:22,027 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2022-11-20 21:11:22,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:11:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2022-11-20 21:11:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 21:11:22,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:22,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:22,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:22,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:22,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1925046396, now seen corresponding path program 1 times [2022-11-20 21:11:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:22,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371402713] [2022-11-20 21:11:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:11:22,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:22,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371402713] [2022-11-20 21:11:22,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371402713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:22,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754696121] [2022-11-20 21:11:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:22,919 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:22,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 21:11:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 21:11:23,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:23,165 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 [2022-11-20 21:11:23,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:11:23,196 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_837 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_837)))) is different from true [2022-11-20 21:11:23,219 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_837 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_837)))) is different from true [2022-11-20 21:11:23,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:23,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 21:11:23,334 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_838 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_838))) is different from true [2022-11-20 21:11:23,369 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_838 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_838))) is different from true [2022-11-20 21:11:23,386 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 21:11:23,386 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 12 treesize of output 18 [2022-11-20 21:11:23,590 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2022-11-20 21:11:23,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:23,632 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-20 21:11:23,632 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 22 [2022-11-20 21:11:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 15 not checked. [2022-11-20 21:11:23,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:23,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754696121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:23,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1509462265] [2022-11-20 21:11:23,976 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-20 21:11:23,976 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:23,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:23,977 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:23,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:24,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:24,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:24,053 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 21:11:24,057 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 [2022-11-20 21:11:24,064 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 13 treesize of output 9 [2022-11-20 21:11:24,069 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 13 treesize of output 9 [2022-11-20 21:11:24,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:24,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:24,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:24,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:24,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:24,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:24,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:24,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:24,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:24,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:24,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:24,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:24,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,383 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:24,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:24,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:24,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:24,464 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 [2022-11-20 21:11:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:24,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,506 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:24,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:24,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:24,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:24,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:24,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:24,613 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 [2022-11-20 21:11:24,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:24,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:24,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:24,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:24,848 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:11:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:24,864 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:11:24,905 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 27 treesize of output 11 [2022-11-20 21:11:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:24,962 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:24,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:24,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,007 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 17 treesize of output 7 [2022-11-20 21:11:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:25,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:25,041 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 [2022-11-20 21:11:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,070 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:11:25,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:11:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,103 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 17 treesize of output 7 [2022-11-20 21:11:25,114 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 [2022-11-20 21:11:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:11:25,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:11:25,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:25,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:25,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,315 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:11:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,329 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:11:25,370 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 27 treesize of output 11 [2022-11-20 21:11:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,439 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:11:25,440 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:11:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,468 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:11:25,468 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 1 case distinctions, treesize of input 217 treesize of output 215 [2022-11-20 21:11:25,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,519 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 27 treesize of output 11 [2022-11-20 21:11:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,650 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:11:25,650 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:11:25,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,676 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:11:25,676 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 1 case distinctions, treesize of input 217 treesize of output 215 [2022-11-20 21:11:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,756 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 27 treesize of output 11 [2022-11-20 21:11:25,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:25,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:25,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:26,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:26,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:26,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:26,076 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:11:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:26,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:26,092 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:11:26,129 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 27 treesize of output 11 [2022-11-20 21:11:26,295 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 7 treesize of output 3 [2022-11-20 21:11:26,308 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 7 treesize of output 3 [2022-11-20 21:11:26,383 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 7 treesize of output 3 [2022-11-20 21:11:26,405 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 7 treesize of output 3 [2022-11-20 21:11:26,539 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:11:26,733 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:32,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2653#(and (= |ULTIMATE.start_dll_append_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 0)) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (= (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 12) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (< |ULTIMATE.start_dll_append_~new_last~0#1.base| |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (not (= |ULTIMATE.start_dll_append_~new_last~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 4) 0) (not (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1)) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_dll_append_~head#1.base| |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 8) 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 4) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 8) 0))' at error location [2022-11-20 21:11:32,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:32,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:11:32,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2022-11-20 21:11:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836572908] [2022-11-20 21:11:32,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 21:11:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 21:11:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1454, Unknown=5, NotChecked=410, Total=2070 [2022-11-20 21:11:32,148 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 25 states, 19 states have (on average 3.210526315789474) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:11:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:32,725 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-11-20 21:11:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 21:11:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 3.210526315789474) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2022-11-20 21:11:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:32,731 INFO L225 Difference]: With dead ends: 87 [2022-11-20 21:11:32,731 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 21:11:32,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=287, Invalid=1984, Unknown=5, NotChecked=480, Total=2756 [2022-11-20 21:11:32,733 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 105 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:32,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 343 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 403 Invalid, 0 Unknown, 476 Unchecked, 0.3s Time] [2022-11-20 21:11:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 21:11:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-11-20 21:11:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.711111111111111) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2022-11-20 21:11:32,737 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 38 [2022-11-20 21:11:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:32,738 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2022-11-20 21:11:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 3.210526315789474) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:11:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2022-11-20 21:11:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 21:11:32,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:32,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:32,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:32,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 21:11:32,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1925046395, now seen corresponding path program 1 times [2022-11-20 21:11:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:32,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879916309] [2022-11-20 21:11:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:32,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:11:33,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:33,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879916309] [2022-11-20 21:11:33,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879916309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:33,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216870865] [2022-11-20 21:11:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:33,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:33,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 21:11:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:33,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 21:11:33,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:33,798 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 [2022-11-20 21:11:33,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:11:33,828 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1029 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1029) |c_#length|)))) is different from true [2022-11-20 21:11:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:33,860 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 [2022-11-20 21:11:33,899 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 [2022-11-20 21:11:33,907 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1030 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1030) |c_#length|)))) is different from true [2022-11-20 21:11:33,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:33,933 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 [2022-11-20 21:11:33,979 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 [2022-11-20 21:11:33,986 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1031 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1031) |c_#length|)))) is different from true [2022-11-20 21:11:34,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,013 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 [2022-11-20 21:11:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 15 not checked. [2022-11-20 21:11:34,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:34,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216870865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1044311712] [2022-11-20 21:11:34,140 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-20 21:11:34,140 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:34,141 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:34,141 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:34,141 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:34,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:34,227 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 [2022-11-20 21:11:34,231 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 [2022-11-20 21:11:34,237 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 19 treesize of output 1 [2022-11-20 21:11:34,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:34,247 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 13 treesize of output 9 [2022-11-20 21:11:34,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:34,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:34,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:34,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:34,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:34,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:34,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:34,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:34,501 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:34,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:34,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:34,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:34,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:11:34,603 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:11:34,617 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:11:34,661 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 27 treesize of output 11 [2022-11-20 21:11:34,759 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:34,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 191 [2022-11-20 21:11:34,894 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 [2022-11-20 21:11:34,903 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 7 treesize of output 3 [2022-11-20 21:11:34,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:11:34,932 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 190 treesize of output 182 [2022-11-20 21:11:34,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:11:35,048 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:35,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 191 [2022-11-20 21:11:35,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:11:35,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:11:35,206 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 178 treesize of output 170 [2022-11-20 21:11:35,256 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 [2022-11-20 21:11:35,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:35,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:35,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:35,357 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 [2022-11-20 21:11:35,376 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 27 treesize of output 11 [2022-11-20 21:11:35,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:35,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:35,448 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 9 treesize of output 3 [2022-11-20 21:11:35,455 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 9 treesize of output 3 [2022-11-20 21:11:35,463 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 7 treesize of output 3 [2022-11-20 21:11:35,472 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 [2022-11-20 21:11:35,480 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 [2022-11-20 21:11:35,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 21:11:35,520 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 9 treesize of output 3 [2022-11-20 21:11:35,527 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 [2022-11-20 21:11:35,536 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 [2022-11-20 21:11:35,545 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 7 treesize of output 3 [2022-11-20 21:11:35,576 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 [2022-11-20 21:11:35,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:35,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:35,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:35,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:35,631 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 27 treesize of output 11 [2022-11-20 21:11:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:35,666 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 23 treesize of output 22 [2022-11-20 21:11:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:35,678 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 23 treesize of output 22 [2022-11-20 21:11:35,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:35,701 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 27 treesize of output 11 [2022-11-20 21:11:35,809 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 7 treesize of output 3 [2022-11-20 21:11:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:35,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:35,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:35,853 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:35,853 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 113 treesize of output 76 [2022-11-20 21:11:35,873 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:35,873 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 [2022-11-20 21:11:35,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:35,892 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 [2022-11-20 21:11:36,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:36,029 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:36,029 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 113 treesize of output 76 [2022-11-20 21:11:36,049 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:36,049 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 [2022-11-20 21:11:36,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,069 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 [2022-11-20 21:11:36,095 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 7 treesize of output 3 [2022-11-20 21:11:36,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:36,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:36,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:36,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,327 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 23 treesize of output 22 [2022-11-20 21:11:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,341 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 23 treesize of output 22 [2022-11-20 21:11:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,354 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 27 treesize of output 11 [2022-11-20 21:11:36,505 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 7 treesize of output 3 [2022-11-20 21:11:36,522 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:11:36,522 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 158 treesize of output 109 [2022-11-20 21:11:36,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:11:36,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,560 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 [2022-11-20 21:11:36,576 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:36,576 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 [2022-11-20 21:11:36,672 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 7 treesize of output 3 [2022-11-20 21:11:36,691 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:11:36,691 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 158 treesize of output 109 [2022-11-20 21:11:36,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:11:36,728 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:36,728 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 [2022-11-20 21:11:36,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:36,747 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 [2022-11-20 21:11:36,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:36,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:36,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:36,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:36,862 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 27 treesize of output 11 [2022-11-20 21:11:36,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:36,916 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 [2022-11-20 21:11:36,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:11:36,947 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 27 treesize of output 11 [2022-11-20 21:11:36,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:36,965 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 13 treesize of output 9 [2022-11-20 21:11:37,105 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 7 treesize of output 3 [2022-11-20 21:11:37,125 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 7 treesize of output 3 [2022-11-20 21:11:37,180 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 7 treesize of output 3 [2022-11-20 21:11:37,199 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 7 treesize of output 3 [2022-11-20 21:11:37,280 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:11:37,459 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:39,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2983#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (< (select |#length| |ULTIMATE.start_dll_append_~head#1.base|) (+ |ULTIMATE.start_dll_append_~head#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:39,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:39,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:11:39,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-11-20 21:11:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660925102] [2022-11-20 21:11:39,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 21:11:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 21:11:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=765, Unknown=4, NotChecked=174, Total=1056 [2022-11-20 21:11:39,956 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 21:11:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:40,356 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-11-20 21:11:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 21:11:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-11-20 21:11:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:40,357 INFO L225 Difference]: With dead ends: 81 [2022-11-20 21:11:40,358 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 21:11:40,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=139, Invalid=925, Unknown=4, NotChecked=192, Total=1260 [2022-11-20 21:11:40,359 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 214 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:40,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 142 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 272 Invalid, 0 Unknown, 231 Unchecked, 0.3s Time] [2022-11-20 21:11:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 21:11:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-11-20 21:11:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.6) internal successors, (72), 66 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-20 21:11:40,363 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 38 [2022-11-20 21:11:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:40,363 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-20 21:11:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 21:11:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-20 21:11:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 21:11:40,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:40,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:40,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 21:11:40,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1161318597, now seen corresponding path program 1 times [2022-11-20 21:11:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981003315] [2022-11-20 21:11:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 21:11:40,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:40,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981003315] [2022-11-20 21:11:40,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981003315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:11:40,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:11:40,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:11:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733615008] [2022-11-20 21:11:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:11:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:11:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:11:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:11:40,647 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:11:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:40,702 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2022-11-20 21:11:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:11:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-11-20 21:11:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:40,705 INFO L225 Difference]: With dead ends: 79 [2022-11-20 21:11:40,705 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 21:11:40,705 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 [2022-11-20 21:11:40,706 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:40,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 59 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:11:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 21:11:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-11-20 21:11:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-20 21:11:40,714 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 40 [2022-11-20 21:11:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:40,714 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-20 21:11:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:11:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-20 21:11:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 21:11:40,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:40,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 21:11:40,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1641141948, now seen corresponding path program 1 times [2022-11-20 21:11:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247669952] [2022-11-20 21:11:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:11:41,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247669952] [2022-11-20 21:11:41,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247669952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866836337] [2022-11-20 21:11:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:41,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:41,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:41,399 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:41,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 21:11:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:41,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 21:11:41,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:41,676 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 [2022-11-20 21:11:41,826 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 9 treesize of output 5 [2022-11-20 21:11:41,977 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1312 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_1312))) (exists ((v_ArrVal_1315 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1315))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-11-20 21:11:42,008 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-20 21:11:42,008 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 21 treesize of output 29 [2022-11-20 21:11:42,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,014 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 24 treesize of output 24 [2022-11-20 21:11:42,056 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 [2022-11-20 21:11:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-20 21:11:42,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:42,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866836337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:42,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982706039] [2022-11-20 21:11:42,173 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-20 21:11:42,173 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:42,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:42,174 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:42,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:42,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:42,238 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 [2022-11-20 21:11:42,242 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 [2022-11-20 21:11:42,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:42,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:42,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:42,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:42,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:42,281 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 [2022-11-20 21:11:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:42,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:42,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:42,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,445 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:42,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:42,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:11:42,537 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:11:42,551 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:11:42,602 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 27 treesize of output 11 [2022-11-20 21:11:42,693 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:42,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:11:42,786 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 [2022-11-20 21:11:42,799 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 7 treesize of output 3 [2022-11-20 21:11:42,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:11:42,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:11:42,842 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 178 treesize of output 170 [2022-11-20 21:11:42,952 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:42,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:11:43,043 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 7 treesize of output 3 [2022-11-20 21:11:43,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:11:43,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:11:43,079 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 178 treesize of output 170 [2022-11-20 21:11:43,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:11:43,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:43,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:43,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:43,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:43,237 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 27 treesize of output 11 [2022-11-20 21:11:43,282 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 7 treesize of output 3 [2022-11-20 21:11:43,290 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 [2022-11-20 21:11:43,298 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 [2022-11-20 21:11:43,307 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 9 treesize of output 3 [2022-11-20 21:11:43,316 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 9 treesize of output 3 [2022-11-20 21:11:43,346 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 5 treesize of output 3 [2022-11-20 21:11:43,355 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 [2022-11-20 21:11:43,363 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 9 treesize of output 3 [2022-11-20 21:11:43,372 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 9 treesize of output 3 [2022-11-20 21:11:43,380 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 7 treesize of output 3 [2022-11-20 21:11:43,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:43,422 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 [2022-11-20 21:11:43,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:43,453 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 27 treesize of output 11 [2022-11-20 21:11:43,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:43,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:43,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:43,512 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 23 treesize of output 22 [2022-11-20 21:11:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:43,539 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 27 treesize of output 11 [2022-11-20 21:11:43,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:43,565 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 23 treesize of output 22 [2022-11-20 21:11:43,686 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 7 treesize of output 3 [2022-11-20 21:11:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:43,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:43,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:43,725 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:43,725 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 113 treesize of output 76 [2022-11-20 21:11:43,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:43,745 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 [2022-11-20 21:11:43,761 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:43,761 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 [2022-11-20 21:11:43,869 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 7 treesize of output 3 [2022-11-20 21:11:43,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:43,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:43,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:43,907 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:43,907 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 113 treesize of output 76 [2022-11-20 21:11:43,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:43,927 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 [2022-11-20 21:11:43,943 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:43,943 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 [2022-11-20 21:11:43,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:43,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:44,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:44,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:44,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:44,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:44,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,157 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 23 treesize of output 22 [2022-11-20 21:11:44,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,171 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 23 treesize of output 22 [2022-11-20 21:11:44,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,194 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 27 treesize of output 11 [2022-11-20 21:11:44,338 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:11:44,338 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 158 treesize of output 109 [2022-11-20 21:11:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:44,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:11:44,376 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:44,377 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 [2022-11-20 21:11:44,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:44,396 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 [2022-11-20 21:11:44,418 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 7 treesize of output 3 [2022-11-20 21:11:44,519 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 7 treesize of output 3 [2022-11-20 21:11:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:44,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:44,559 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:44,559 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 113 treesize of output 76 [2022-11-20 21:11:44,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:44,578 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 [2022-11-20 21:11:44,594 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:44,595 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 [2022-11-20 21:11:44,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:44,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:44,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:44,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:44,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:44,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:44,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:44,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:44,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:44,781 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 27 treesize of output 11 [2022-11-20 21:11:44,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:44,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:44,945 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 7 treesize of output 3 [2022-11-20 21:11:44,956 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 7 treesize of output 3 [2022-11-20 21:11:45,005 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 7 treesize of output 3 [2022-11-20 21:11:45,021 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 7 treesize of output 3 [2022-11-20 21:11:45,154 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:11:45,334 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:51,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3471#(and (= |ULTIMATE.start_dll_append_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 0)) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= (+ |ULTIMATE.start_dll_append_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_append_~head#1.base|)) (<= |ULTIMATE.start_dll_append_~data#1| 1) (= (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 12) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (< |ULTIMATE.start_dll_append_~new_last~0#1.base| |#StackHeapBarrier|) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (not (= |ULTIMATE.start_dll_append_~new_last~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_append_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_dll_append_~head#1.base| |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 8) 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 4) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 8) 0))' at error location [2022-11-20 21:11:51,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:51,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:11:51,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2022-11-20 21:11:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382977170] [2022-11-20 21:11:51,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:51,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 21:11:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:51,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 21:11:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1652, Unknown=3, NotChecked=82, Total=1892 [2022-11-20 21:11:51,170 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 24 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 21 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:11:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:51,990 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2022-11-20 21:11:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 21:11:51,991 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 21 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 41 [2022-11-20 21:11:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:51,991 INFO L225 Difference]: With dead ends: 94 [2022-11-20 21:11:51,991 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 21:11:51,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=204, Invalid=2146, Unknown=6, NotChecked=94, Total=2450 [2022-11-20 21:11:51,993 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 59 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:51,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 590 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 678 Invalid, 0 Unknown, 212 Unchecked, 0.6s Time] [2022-11-20 21:11:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 21:11:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2022-11-20 21:11:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 63 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:11:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-11-20 21:11:51,996 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 41 [2022-11-20 21:11:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:51,997 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-11-20 21:11:51,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 21 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:11:51,997 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-11-20 21:11:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 21:11:51,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:51,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:52,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:52,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:52,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:11:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1641141949, now seen corresponding path program 1 times [2022-11-20 21:11:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578271556] [2022-11-20 21:11:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:11:53,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578271556] [2022-11-20 21:11:53,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578271556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764833665] [2022-11-20 21:11:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:53,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:53,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:53,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 21:11:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 21:11:53,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:54,054 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 [2022-11-20 21:11:54,389 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 19 treesize of output 11 [2022-11-20 21:11:54,393 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 [2022-11-20 21:11:54,530 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1515 (Array Int Int)) (v_ArrVal_1514 (Array Int Int)) (|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1515)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1514) |c_#memory_$Pointer$.base|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-11-20 21:11:54,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:54,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 21:11:54,555 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 21:11:54,555 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 [2022-11-20 21:11:54,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2022-11-20 21:11:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:54,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 21 [2022-11-20 21:11:54,633 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 [2022-11-20 21:11:54,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 21:11:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-20 21:11:54,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:54,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764833665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [955285935] [2022-11-20 21:11:54,968 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-20 21:11:54,968 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:54,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:54,968 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:54,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:54,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:11:55,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:55,042 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 [2022-11-20 21:11:55,046 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 [2022-11-20 21:11:55,053 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 13 treesize of output 9 [2022-11-20 21:11:55,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:55,062 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 19 treesize of output 1 [2022-11-20 21:11:55,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:55,074 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 23 treesize of output 22 [2022-11-20 21:11:55,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:55,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:11:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:55,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:11:55,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:11:55,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,267 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:11:55,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:11:55,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:11:55,381 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 27 treesize of output 11 [2022-11-20 21:11:55,392 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:11:55,407 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:11:55,522 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:55,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:11:55,645 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 7 treesize of output 3 [2022-11-20 21:11:55,653 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 [2022-11-20 21:11:55,665 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 202 treesize of output 194 [2022-11-20 21:11:55,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 180 [2022-11-20 21:11:55,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:11:55,786 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:11:55,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 191 [2022-11-20 21:11:55,910 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 [2022-11-20 21:11:55,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:11:55,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:11:55,942 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 178 treesize of output 170 [2022-11-20 21:11:55,992 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 [2022-11-20 21:11:56,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:56,049 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 [2022-11-20 21:11:56,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:56,080 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 27 treesize of output 11 [2022-11-20 21:11:56,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:56,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:56,149 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 9 treesize of output 3 [2022-11-20 21:11:56,157 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 9 treesize of output 3 [2022-11-20 21:11:56,164 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 [2022-11-20 21:11:56,173 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 [2022-11-20 21:11:56,181 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 7 treesize of output 3 [2022-11-20 21:11:56,213 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 9 treesize of output 3 [2022-11-20 21:11:56,237 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 7 treesize of output 3 [2022-11-20 21:11:56,244 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 [2022-11-20 21:11:56,252 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 9 treesize of output 3 [2022-11-20 21:11:56,261 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 [2022-11-20 21:11:56,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:56,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:11:56,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:56,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:56,341 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 27 treesize of output 11 [2022-11-20 21:11:56,348 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 13 treesize of output 9 [2022-11-20 21:11:56,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:56,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,396 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 23 treesize of output 22 [2022-11-20 21:11:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,407 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 23 treesize of output 22 [2022-11-20 21:11:56,508 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 7 treesize of output 3 [2022-11-20 21:11:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:56,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:56,543 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:56,544 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 113 treesize of output 76 [2022-11-20 21:11:56,561 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:56,562 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 [2022-11-20 21:11:56,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:56,583 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 [2022-11-20 21:11:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:56,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:56,717 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:56,718 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 113 treesize of output 76 [2022-11-20 21:11:56,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:56,738 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 [2022-11-20 21:11:56,755 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:56,756 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 [2022-11-20 21:11:56,781 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 7 treesize of output 3 [2022-11-20 21:11:56,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:56,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:56,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:56,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:56,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:56,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:56,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:56,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:56,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:56,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:56,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:56,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:56,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,998 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 23 treesize of output 22 [2022-11-20 21:11:57,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:11:57,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,030 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 27 treesize of output 11 [2022-11-20 21:11:57,184 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 7 treesize of output 3 [2022-11-20 21:11:57,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,204 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:57,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:11:57,223 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:11:57,224 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 113 treesize of output 76 [2022-11-20 21:11:57,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:57,246 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 [2022-11-20 21:11:57,293 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:57,293 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 [2022-11-20 21:11:57,411 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:11:57,411 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 158 treesize of output 109 [2022-11-20 21:11:57,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:57,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:11:57,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:57,449 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 [2022-11-20 21:11:57,465 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:57,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:11:57,487 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 7 treesize of output 3 [2022-11-20 21:11:57,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:57,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:11:57,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:11:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:11:57,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:57,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:57,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:57,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:57,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:11:57,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:57,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:11:57,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:11:57,682 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 13 treesize of output 9 [2022-11-20 21:11:57,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:11:57,697 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 27 treesize of output 11 [2022-11-20 21:11:57,838 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 7 treesize of output 3 [2022-11-20 21:11:57,848 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 7 treesize of output 3 [2022-11-20 21:11:57,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:11:57,923 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 7 treesize of output 3 [2022-11-20 21:11:58,005 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:11:58,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:02,110 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3833#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= (+ |ULTIMATE.start_dll_append_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_append_~head#1.base|)) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)))) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_append_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:02,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:02,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:12:02,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-11-20 21:12:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594988493] [2022-11-20 21:12:02,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 21:12:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 21:12:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2081, Unknown=1, NotChecked=92, Total=2352 [2022-11-20 21:12:02,113 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 27 states, 20 states have (on average 2.95) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:12:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:03,752 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-11-20 21:12:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 21:12:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 2.95) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 41 [2022-11-20 21:12:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:03,754 INFO L225 Difference]: With dead ends: 101 [2022-11-20 21:12:03,755 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 21:12:03,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=288, Invalid=3137, Unknown=1, NotChecked=114, Total=3540 [2022-11-20 21:12:03,756 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 351 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:03,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 572 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 950 Invalid, 0 Unknown, 103 Unchecked, 0.9s Time] [2022-11-20 21:12:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 21:12:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2022-11-20 21:12:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.489795918367347) internal successors, (73), 66 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2022-11-20 21:12:03,760 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 41 [2022-11-20 21:12:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:03,761 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2022-11-20 21:12:03,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 2.95) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:12:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2022-11-20 21:12:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 21:12:03,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:03,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:03,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 21:12:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 21:12:03,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash -664477434, now seen corresponding path program 1 times [2022-11-20 21:12:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:03,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858893259] [2022-11-20 21:12:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 21:12:04,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:04,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858893259] [2022-11-20 21:12:04,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858893259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:04,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:04,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:12:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130928044] [2022-11-20 21:12:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:04,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:12:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:12:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:12:04,148 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:04,221 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-11-20 21:12:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:12:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-20 21:12:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:04,223 INFO L225 Difference]: With dead ends: 80 [2022-11-20 21:12:04,223 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 21:12:04,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:12:04,224 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 55 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 88 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 21:12:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2022-11-20 21:12:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.469387755102041) internal successors, (72), 65 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-11-20 21:12:04,233 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 42 [2022-11-20 21:12:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:04,234 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-11-20 21:12:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-11-20 21:12:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:04,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:04,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 21:12:04,237 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1647079665, now seen corresponding path program 1 times [2022-11-20 21:12:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:04,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591288832] [2022-11-20 21:12:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:04,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:06,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591288832] [2022-11-20 21:12:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591288832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864631529] [2022-11-20 21:12:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:06,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:06,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 21:12:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 21:12:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:06,584 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 [2022-11-20 21:12:06,843 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:12:06,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 21:12:06,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:07,059 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:12:07,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-20 21:12:07,265 INFO L321 Elim1Store]: treesize reduction 3, result has 83.3 percent of original size [2022-11-20 21:12:07,266 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 51 treesize of output 33 [2022-11-20 21:12:07,271 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 11 [2022-11-20 21:12:07,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:12:07,482 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1821 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1821))) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (exists ((v_ArrVal_1822 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1822))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-11-20 21:12:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:07,502 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:12:07,502 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 57 treesize of output 55 [2022-11-20 21:12:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:07,508 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 48 treesize of output 48 [2022-11-20 21:12:07,554 INFO L321 Elim1Store]: treesize reduction 94, result has 36.9 percent of original size [2022-11-20 21:12:07,554 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 4 case distinctions, treesize of input 42 treesize of output 64 [2022-11-20 21:12:07,647 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 49 treesize of output 37 [2022-11-20 21:12:07,742 INFO L321 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-11-20 21:12:07,743 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 56 treesize of output 32 [2022-11-20 21:12:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 21:12:07,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:08,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864631529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985415720] [2022-11-20 21:12:08,092 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 21:12:08,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:08,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:08,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:08,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:08,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:12:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:08,158 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 [2022-11-20 21:12:08,162 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 [2022-11-20 21:12:08,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:08,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:08,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:08,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:12:08,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:12:08,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:12:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:08,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:08,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:08,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:08,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:08,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:08,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:08,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:08,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,482 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:08,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:08,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:08,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:08,548 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 [2022-11-20 21:12:08,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:08,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,582 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:08,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,618 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 17 treesize of output 7 [2022-11-20 21:12:08,628 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 [2022-11-20 21:12:08,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:08,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:08,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,660 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 17 treesize of output 7 [2022-11-20 21:12:08,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,768 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 259 [2022-11-20 21:12:08,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 250 [2022-11-20 21:12:08,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:08,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 254 [2022-11-20 21:12:08,871 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 248 [2022-11-20 21:12:08,885 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 0 case distinctions, treesize of input 255 treesize of output 236 [2022-11-20 21:12:08,925 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 27 treesize of output 11 [2022-11-20 21:12:08,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,989 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:08,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:09,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:09,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:12:09,043 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 19 treesize of output 7 [2022-11-20 21:12:09,063 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 19 treesize of output 7 [2022-11-20 21:12:09,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:09,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,105 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:09,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:09,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:09,152 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 [2022-11-20 21:12:09,164 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 19 treesize of output 7 [2022-11-20 21:12:09,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:12:09,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:09,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 259 [2022-11-20 21:12:09,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 250 [2022-11-20 21:12:09,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 254 [2022-11-20 21:12:09,382 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 0 case distinctions, treesize of input 267 treesize of output 248 [2022-11-20 21:12:09,396 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 0 case distinctions, treesize of input 255 treesize of output 236 [2022-11-20 21:12:09,436 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 27 treesize of output 11 [2022-11-20 21:12:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,486 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 27 treesize of output 11 [2022-11-20 21:12:09,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,514 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 21:12:09,515 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 1 case distinctions, treesize of input 240 treesize of output 240 [2022-11-20 21:12:09,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,544 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 21:12:09,544 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 1 case distinctions, treesize of input 228 treesize of output 224 [2022-11-20 21:12:09,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,743 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 27 treesize of output 11 [2022-11-20 21:12:09,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,769 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 21:12:09,769 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 1 case distinctions, treesize of input 240 treesize of output 236 [2022-11-20 21:12:09,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,800 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 21:12:09,800 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 1 case distinctions, treesize of input 240 treesize of output 240 [2022-11-20 21:12:09,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,982 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 259 [2022-11-20 21:12:09,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 250 [2022-11-20 21:12:10,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:10,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:10,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 254 [2022-11-20 21:12:10,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:10,078 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 0 case distinctions, treesize of input 267 treesize of output 248 [2022-11-20 21:12:10,106 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 0 case distinctions, treesize of input 255 treesize of output 236 [2022-11-20 21:12:10,281 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 7 treesize of output 3 [2022-11-20 21:12:10,291 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 7 treesize of output 3 [2022-11-20 21:12:10,347 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 7 treesize of output 3 [2022-11-20 21:12:10,365 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 7 treesize of output 3 [2022-11-20 21:12:10,552 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:12:10,733 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:11,756 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (let ((.cse5 (+ |c_node_create_~temp~0#1.offset| 4)) (.cse6 (+ 8 |c_node_create_~temp~0#1.offset|))) (let ((.cse4 (select |c_old(#memory_int)| |c_node_create_~temp~0#1.base|)) (.cse7 (select (select |c_#memory_int| |c_node_create_~temp~0#1.base|) .cse6)) (.cse0 (= |c_#NULL.offset| 0)) (.cse1 (= |c_#NULL.base| 0)) (.cse2 (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base|) .cse5 0) .cse6 0)) |c_#memory_$Pointer$.base|)) (.cse3 (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| 1))) (.cse8 (= (select |c_old(#valid)| |c_node_create_~temp~0#1.base|) 0)) (.cse9 (= (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base|) .cse5 0) .cse6 0)) |c_#memory_$Pointer$.offset|)) (.cse11 (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| 12) |c_#length|))) (or (and (= |c_node_create_#in~data#1| 1) .cse0 .cse1 .cse2 .cse3 (exists ((v_DerPreprocessor_26 Int)) (= (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store .cse4 .cse5 v_DerPreprocessor_26) .cse6 .cse7)) |c_#memory_int|)) .cse8 .cse9 (exists ((|v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_27| Int)) (let ((.cse10 (select (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_27|) 0))) (and (<= 0 .cse10) (<= .cse10 0) (<= 0 |v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_27|)))) .cse11) (and (exists ((v_DerPreprocessor_25 Int)) (= (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store .cse4 .cse5 v_DerPreprocessor_25) .cse6 .cse7)) |c_#memory_int|)) .cse0 .cse1 .cse2 .cse3 .cse8 .cse9 .cse11)))) (not (= |c_node_create_~temp~0#1.base| 0)) (= |c_node_create_#in~data#1| |c_node_create_~data#1|) (<= 0 |c_#NULL.base|) (= |c_node_create_~temp~0#1.offset| 0) (<= 1 |c_node_create_#in~data#1|) (= (select |c_#valid| |c_node_create_~temp~0#1.base|) 1) (<= 0 |c_#NULL.offset|) (<= 0 |c_#StackHeapBarrier|) (<= |c_node_create_#in~data#1| 1) (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) (<= (+ 12 |c_node_create_~temp~0#1.offset|) (select |c_#length| |c_node_create_~temp~0#1.base|))) is different from true [2022-11-20 21:12:16,154 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4402#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:16,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:16,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:12:16,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 41 [2022-11-20 21:12:16,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934206871] [2022-11-20 21:12:16,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:16,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 21:12:16,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:16,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 21:12:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3515, Unknown=3, NotChecked=242, Total=4032 [2022-11-20 21:12:16,157 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 42 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 36 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:17,596 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2022-11-20 21:12:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 21:12:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 36 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2022-11-20 21:12:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:17,598 INFO L225 Difference]: With dead ends: 72 [2022-11-20 21:12:17,598 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 21:12:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=415, Invalid=4992, Unknown=3, NotChecked=290, Total=5700 [2022-11-20 21:12:17,600 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 58 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:17,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 591 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 673 Invalid, 0 Unknown, 142 Unchecked, 0.6s Time] [2022-11-20 21:12:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 21:12:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-11-20 21:12:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.48) internal successors, (74), 66 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-20 21:12:17,603 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 44 [2022-11-20 21:12:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:17,604 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-20 21:12:17,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 36 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-20 21:12:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:17,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:17,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:17,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:17,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 21:12:17,811 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1647079666, now seen corresponding path program 1 times [2022-11-20 21:12:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:17,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803249396] [2022-11-20 21:12:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:17,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:20,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:20,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803249396] [2022-11-20 21:12:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803249396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:20,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100183233] [2022-11-20 21:12:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:20,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:20,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:20,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 21:12:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:20,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-20 21:12:20,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:20,861 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 [2022-11-20 21:12:21,274 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:12:21,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 21:12:21,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:21,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:21,667 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:12:21,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 62 [2022-11-20 21:12:21,673 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 [2022-11-20 21:12:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:22,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 48 [2022-11-20 21:12:22,033 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:12:22,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 22 [2022-11-20 21:12:22,334 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2034 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_2034) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2033 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_2033) |c_#memory_$Pointer$.base|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_2028 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_2028) |c_#length|)))) is different from true [2022-11-20 21:12:22,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,361 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:12:22,361 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 109 treesize of output 97 [2022-11-20 21:12:22,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,373 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:12:22,373 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 114 treesize of output 101 [2022-11-20 21:12:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,387 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 42 treesize of output 44 [2022-11-20 21:12:22,409 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2022-11-20 21:12:22,410 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 34 treesize of output 36 [2022-11-20 21:12:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:22,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 54 [2022-11-20 21:12:22,689 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:12:22,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 25 [2022-11-20 21:12:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 21:12:22,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:23,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100183233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505166750] [2022-11-20 21:12:23,228 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 21:12:23,229 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:23,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:23,229 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:23,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:23,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:12:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:23,304 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 [2022-11-20 21:12:23,307 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 [2022-11-20 21:12:23,313 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 19 treesize of output 1 [2022-11-20 21:12:23,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:23,323 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 13 treesize of output 9 [2022-11-20 21:12:23,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:12:23,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:12:23,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:23,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:23,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:23,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:23,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:23,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:23,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,527 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:12:23,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:12:23,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:12:23,615 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:12:23,628 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:12:23,662 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 27 treesize of output 11 [2022-11-20 21:12:23,754 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:12:23,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:12:23,879 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 [2022-11-20 21:12:23,887 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 7 treesize of output 3 [2022-11-20 21:12:23,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:12:23,909 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 190 treesize of output 182 [2022-11-20 21:12:23,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:12:24,013 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:12:24,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:12:24,138 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 7 treesize of output 3 [2022-11-20 21:12:24,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:12:24,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:12:24,173 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 178 treesize of output 170 [2022-11-20 21:12:24,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:24,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:12:24,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:24,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:24,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:24,318 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 13 treesize of output 9 [2022-11-20 21:12:24,331 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 27 treesize of output 11 [2022-11-20 21:12:24,368 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 [2022-11-20 21:12:24,376 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 9 treesize of output 3 [2022-11-20 21:12:24,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:12:24,391 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 9 treesize of output 3 [2022-11-20 21:12:24,398 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 7 treesize of output 3 [2022-11-20 21:12:24,427 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 [2022-11-20 21:12:24,434 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 9 treesize of output 3 [2022-11-20 21:12:24,442 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 [2022-11-20 21:12:24,453 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 9 treesize of output 3 [2022-11-20 21:12:24,461 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 7 treesize of output 3 [2022-11-20 21:12:24,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:24,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:24,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:24,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:24,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:24,578 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 27 treesize of output 11 [2022-11-20 21:12:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:24,607 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 23 treesize of output 22 [2022-11-20 21:12:24,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:24,619 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 27 treesize of output 11 [2022-11-20 21:12:24,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:24,631 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 23 treesize of output 22 [2022-11-20 21:12:24,733 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 7 treesize of output 3 [2022-11-20 21:12:24,751 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:12:24,751 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 158 treesize of output 109 [2022-11-20 21:12:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:24,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:24,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:12:24,802 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:24,803 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 [2022-11-20 21:12:24,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:24,825 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 [2022-11-20 21:12:24,939 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 7 treesize of output 3 [2022-11-20 21:12:24,959 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:12:24,959 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 158 treesize of output 109 [2022-11-20 21:12:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:24,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:24,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:12:24,997 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:24,998 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 [2022-11-20 21:12:25,017 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:25,017 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 [2022-11-20 21:12:25,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:25,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:25,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:25,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:25,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:25,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:25,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:25,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:25,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:25,198 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 32 treesize of output 25 [2022-11-20 21:12:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:25,233 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 32 treesize of output 25 [2022-11-20 21:12:25,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,270 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 23 treesize of output 22 [2022-11-20 21:12:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,282 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 27 treesize of output 11 [2022-11-20 21:12:25,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,299 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 23 treesize of output 22 [2022-11-20 21:12:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:25,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:12:25,456 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:25,456 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 113 treesize of output 76 [2022-11-20 21:12:25,473 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:25,474 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 [2022-11-20 21:12:25,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:25,492 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 [2022-11-20 21:12:25,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:12:25,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:25,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:12:25,630 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:25,631 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 113 treesize of output 76 [2022-11-20 21:12:25,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:25,650 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 [2022-11-20 21:12:25,666 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:25,666 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 [2022-11-20 21:12:25,694 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 7 treesize of output 3 [2022-11-20 21:12:25,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:25,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:25,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:25,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,767 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 27 treesize of output 11 [2022-11-20 21:12:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:25,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:25,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:25,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:25,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:25,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:25,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:25,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:25,878 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 27 treesize of output 11 [2022-11-20 21:12:26,011 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 7 treesize of output 3 [2022-11-20 21:12:26,031 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 7 treesize of output 3 [2022-11-20 21:12:26,089 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 7 treesize of output 3 [2022-11-20 21:12:26,103 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 7 treesize of output 3 [2022-11-20 21:12:26,413 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:12:26,579 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:33,003 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4799#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)))) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:33,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:33,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:12:33,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2022-11-20 21:12:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630325823] [2022-11-20 21:12:33,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:33,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 21:12:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 21:12:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=4823, Unknown=5, NotChecked=140, Total=5256 [2022-11-20 21:12:33,007 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 49 states, 40 states have (on average 1.9) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:37,019 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2022-11-20 21:12:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 21:12:37,020 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 40 states have (on average 1.9) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2022-11-20 21:12:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:37,020 INFO L225 Difference]: With dead ends: 144 [2022-11-20 21:12:37,020 INFO L226 Difference]: Without dead ends: 144 [2022-11-20 21:12:37,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=535, Invalid=7296, Unknown=5, NotChecked=174, Total=8010 [2022-11-20 21:12:37,023 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 366 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:37,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1113 Invalid, 2317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1985 Invalid, 0 Unknown, 280 Unchecked, 1.9s Time] [2022-11-20 21:12:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-20 21:12:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 73. [2022-11-20 21:12:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 68 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-11-20 21:12:37,027 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 44 [2022-11-20 21:12:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:37,027 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-11-20 21:12:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 40 states have (on average 1.9) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-11-20 21:12:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:37,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:37,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:37,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:37,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 21:12:37,234 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1647074599, now seen corresponding path program 1 times [2022-11-20 21:12:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:37,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392410666] [2022-11-20 21:12:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 21:12:37,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:37,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392410666] [2022-11-20 21:12:37,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392410666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:37,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:37,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:12:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537878106] [2022-11-20 21:12:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:12:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:12:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:12:37,354 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:12:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:37,477 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2022-11-20 21:12:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:12:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-20 21:12:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:37,478 INFO L225 Difference]: With dead ends: 82 [2022-11-20 21:12:37,478 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 21:12:37,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:12:37,479 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 37 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 136 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 21:12:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2022-11-20 21:12:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 67 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-20 21:12:37,482 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 44 [2022-11-20 21:12:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:37,482 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-20 21:12:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:12:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-20 21:12:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:37,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:37,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:37,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 21:12:37,483 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1647074600, now seen corresponding path program 1 times [2022-11-20 21:12:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:37,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781033359] [2022-11-20 21:12:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 21:12:37,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:37,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781033359] [2022-11-20 21:12:37,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781033359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:37,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:37,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:12:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605126580] [2022-11-20 21:12:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:12:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:12:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:12:37,692 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:12:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:37,809 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2022-11-20 21:12:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:12:37,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-20 21:12:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:37,810 INFO L225 Difference]: With dead ends: 71 [2022-11-20 21:12:37,810 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 21:12:37,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:12:37,811 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:37,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 133 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 21:12:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-20 21:12:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 66 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-20 21:12:37,814 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 44 [2022-11-20 21:12:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:37,814 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-20 21:12:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:12:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-20 21:12:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:37,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:37,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 21:12:37,815 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1387410154, now seen corresponding path program 1 times [2022-11-20 21:12:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:37,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905065323] [2022-11-20 21:12:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 21:12:38,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905065323] [2022-11-20 21:12:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905065323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:38,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:38,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 21:12:38,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812594426] [2022-11-20 21:12:38,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:38,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:12:38,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:38,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:12:38,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:12:38,087 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 9 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:38,320 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2022-11-20 21:12:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:12:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 21:12:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:38,322 INFO L225 Difference]: With dead ends: 122 [2022-11-20 21:12:38,322 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 21:12:38,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 21:12:38,323 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 140 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:38,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 199 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:12:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 21:12:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2022-11-20 21:12:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 69 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-11-20 21:12:38,327 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 44 [2022-11-20 21:12:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:38,327 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-11-20 21:12:38,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-11-20 21:12:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:12:38,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:38,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 21:12:38,329 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1387410155, now seen corresponding path program 1 times [2022-11-20 21:12:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:38,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711931451] [2022-11-20 21:12:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:38,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 21:12:38,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:38,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711931451] [2022-11-20 21:12:38,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711931451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:38,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:38,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 21:12:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193689818] [2022-11-20 21:12:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:38,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:12:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:12:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:12:38,786 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:39,008 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2022-11-20 21:12:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:12:39,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 21:12:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:39,012 INFO L225 Difference]: With dead ends: 113 [2022-11-20 21:12:39,012 INFO L226 Difference]: Without dead ends: 113 [2022-11-20 21:12:39,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 21:12:39,013 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 128 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:39,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 204 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:12:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-20 21:12:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2022-11-20 21:12:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.396551724137931) internal successors, (81), 71 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-11-20 21:12:39,016 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 44 [2022-11-20 21:12:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:39,016 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-11-20 21:12:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-11-20 21:12:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 21:12:39,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:39,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:39,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 21:12:39,018 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash 60130863, now seen corresponding path program 1 times [2022-11-20 21:12:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:39,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15575316] [2022-11-20 21:12:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:39,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 21:12:39,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:39,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15575316] [2022-11-20 21:12:39,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15575316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:39,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:39,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 21:12:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094620170] [2022-11-20 21:12:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:12:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:12:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:12:39,261 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:39,415 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2022-11-20 21:12:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 21:12:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-20 21:12:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:39,416 INFO L225 Difference]: With dead ends: 99 [2022-11-20 21:12:39,416 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 21:12:39,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 21:12:39,417 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 85 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:39,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 319 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 21:12:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2022-11-20 21:12:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 71 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2022-11-20 21:12:39,421 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 45 [2022-11-20 21:12:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:39,421 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2022-11-20 21:12:39,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2022-11-20 21:12:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 21:12:39,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:39,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:39,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 21:12:39,422 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1861298452, now seen corresponding path program 1 times [2022-11-20 21:12:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:39,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190840566] [2022-11-20 21:12:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:12:39,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:39,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190840566] [2022-11-20 21:12:39,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190840566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:39,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003357991] [2022-11-20 21:12:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:39,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:39,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:39,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 21:12:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:40,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 21:12:40,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:40,440 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 11 treesize of output 7 [2022-11-20 21:12:40,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:40,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:40,614 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 18 treesize of output 20 [2022-11-20 21:12:40,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:12:40,679 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 28 treesize of output 16 [2022-11-20 21:12:40,687 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 [2022-11-20 21:12:40,730 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 [2022-11-20 21:12:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 21:12:40,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:12:40,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003357991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:40,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:12:40,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2022-11-20 21:12:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761529593] [2022-11-20 21:12:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:40,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 21:12:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 21:12:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-20 21:12:40,761 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:41,267 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2022-11-20 21:12:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 21:12:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-11-20 21:12:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:41,269 INFO L225 Difference]: With dead ends: 97 [2022-11-20 21:12:41,269 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 21:12:41,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:12:41,270 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 165 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:41,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 330 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:12:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 21:12:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2022-11-20 21:12:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 71 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:12:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-20 21:12:41,273 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 46 [2022-11-20 21:12:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:41,273 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-20 21:12:41,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 21:12:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-20 21:12:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 21:12:41,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:41,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:41,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:41,474 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:12:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1851019620, now seen corresponding path program 2 times [2022-11-20 21:12:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:41,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180023017] [2022-11-20 21:12:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:12:45,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180023017] [2022-11-20 21:12:45,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180023017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450363117] [2022-11-20 21:12:45,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:12:45,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:45,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:45,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:45,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 21:12:45,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:12:45,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:12:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-20 21:12:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:45,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:45,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:46,491 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 21:12:46,492 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 16 treesize of output 22 [2022-11-20 21:12:46,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:12:46,514 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 21:12:46,515 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 16 treesize of output 22 [2022-11-20 21:12:46,519 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 7 treesize of output 3 [2022-11-20 21:12:46,549 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:12:46,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 21:12:46,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 21:12:46,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 21:12:46,824 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 23 treesize of output 22 [2022-11-20 21:12:46,834 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 23 treesize of output 22 [2022-11-20 21:12:47,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:47,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:47,006 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:47,007 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 1 case distinctions, treesize of input 126 treesize of output 89 [2022-11-20 21:12:47,021 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-20 21:12:47,021 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 21:12:47,401 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 21:12:47,401 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 60 [2022-11-20 21:12:47,411 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:12:47,411 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 2 case distinctions, treesize of input 35 treesize of output 18 [2022-11-20 21:12:47,673 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_2951 (Array Int Int)) (v_ArrVal_2950 (Array Int Int))) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_2951)) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_2950) |c_#memory_$Pointer$.base|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-11-20 21:12:47,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:47,706 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:12:47,707 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 101 [2022-11-20 21:12:47,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:47,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:47,719 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-20 21:12:47,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 76 [2022-11-20 21:12:47,737 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:12:47,738 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 28 treesize of output 30 [2022-11-20 21:12:48,227 INFO L321 Elim1Store]: treesize reduction 108, result has 6.1 percent of original size [2022-11-20 21:12:48,227 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 7 new quantified variables, introduced 8 case distinctions, treesize of input 123 treesize of output 65 [2022-11-20 21:12:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-20 21:12:48,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:48,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450363117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:48,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [191563521] [2022-11-20 21:12:48,939 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 21:12:48,939 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:48,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:48,939 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:48,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:48,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:48,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:48,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:12:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:48,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:48,998 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 [2022-11-20 21:12:49,001 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 [2022-11-20 21:12:49,006 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 13 treesize of output 9 [2022-11-20 21:12:49,011 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 13 treesize of output 9 [2022-11-20 21:12:49,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:49,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:12:49,026 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 19 treesize of output 1 [2022-11-20 21:12:49,031 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 23 treesize of output 22 [2022-11-20 21:12:49,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:49,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:49,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:49,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:49,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:12:49,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:12:49,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:49,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:49,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:49,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:49,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:49,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:49,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,264 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:49,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:49,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:49,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:49,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:49,341 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 [2022-11-20 21:12:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,367 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:49,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:12:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:49,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:12:49,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:12:49,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:12:49,444 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 [2022-11-20 21:12:49,487 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 [2022-11-20 21:12:49,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:49,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:12:49,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,511 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 27 treesize of output 11 [2022-11-20 21:12:49,519 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 13 treesize of output 9 [2022-11-20 21:12:49,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:49,572 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 [2022-11-20 21:12:49,584 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 7 treesize of output 3 [2022-11-20 21:12:49,592 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 9 treesize of output 3 [2022-11-20 21:12:49,601 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 [2022-11-20 21:12:49,611 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 9 treesize of output 3 [2022-11-20 21:12:49,640 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 9 treesize of output 3 [2022-11-20 21:12:49,648 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 7 treesize of output 3 [2022-11-20 21:12:49,658 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 [2022-11-20 21:12:49,665 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 9 treesize of output 3 [2022-11-20 21:12:49,675 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 [2022-11-20 21:12:49,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:49,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:12:49,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:49,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:49,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,747 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 27 treesize of output 11 [2022-11-20 21:12:49,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,768 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 27 treesize of output 11 [2022-11-20 21:12:49,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,778 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 23 treesize of output 22 [2022-11-20 21:12:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,793 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 23 treesize of output 22 [2022-11-20 21:12:49,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:49,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:12:49,870 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:49,871 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 62 treesize of output 31 [2022-11-20 21:12:49,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:49,890 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 [2022-11-20 21:12:49,907 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:49,907 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 [2022-11-20 21:12:49,925 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 7 treesize of output 3 [2022-11-20 21:12:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:49,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:49,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:12:49,997 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:49,997 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 31 [2022-11-20 21:12:50,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:50,036 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 [2022-11-20 21:12:50,051 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:50,051 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 [2022-11-20 21:12:50,073 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 7 treesize of output 3 [2022-11-20 21:12:50,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:50,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:50,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:12:50,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:50,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:50,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:12:50,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:50,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:12:50,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:12:50,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:12:50,225 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 32 treesize of output 25 [2022-11-20 21:12:50,236 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 32 treesize of output 25 [2022-11-20 21:12:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,258 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 27 treesize of output 11 [2022-11-20 21:12:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,267 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 23 treesize of output 22 [2022-11-20 21:12:50,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,287 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 23 treesize of output 22 [2022-11-20 21:12:50,357 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 7 treesize of output 3 [2022-11-20 21:12:50,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:50,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:12:50,393 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:50,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 31 [2022-11-20 21:12:50,411 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:50,411 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 [2022-11-20 21:12:50,426 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:50,427 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 [2022-11-20 21:12:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:50,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:12:50,513 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:12:50,513 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 62 treesize of output 31 [2022-11-20 21:12:50,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:50,532 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 [2022-11-20 21:12:50,547 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:50,547 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 [2022-11-20 21:12:50,567 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 7 treesize of output 3 [2022-11-20 21:12:50,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,672 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 160 [2022-11-20 21:12:50,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 151 [2022-11-20 21:12:50,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 155 [2022-11-20 21:12:50,738 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 0 case distinctions, treesize of input 168 treesize of output 149 [2022-11-20 21:12:50,749 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 0 case distinctions, treesize of input 156 treesize of output 137 [2022-11-20 21:12:50,779 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 27 treesize of output 11 [2022-11-20 21:12:50,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:50,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:50,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:12:50,872 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 13 treesize of output 9 [2022-11-20 21:12:50,879 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 13 treesize of output 9 [2022-11-20 21:12:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:50,890 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 27 treesize of output 11 [2022-11-20 21:12:51,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:12:51,038 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 7 treesize of output 3 [2022-11-20 21:12:51,108 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 7 treesize of output 3 [2022-11-20 21:12:51,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:12:51,422 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:12:51,593 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:52,922 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (not (= |c_node_create_~temp~0#1.base| 0)) (let ((.cse6 (+ |c_node_create_~temp~0#1.offset| 4)) (.cse7 (+ 8 |c_node_create_~temp~0#1.offset|))) (let ((.cse5 (select |c_old(#memory_int)| |c_node_create_~temp~0#1.base|)) (.cse8 (select (select |c_#memory_int| |c_node_create_~temp~0#1.base|) .cse7)) (.cse0 (= |c_#NULL.offset| 0)) (.cse1 (= |c_#NULL.base| 0)) (.cse2 (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base|) .cse6 0) .cse7 0)) |c_#memory_$Pointer$.base|)) (.cse3 (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| 1))) (.cse4 (= (select |c_old(#valid)| |c_node_create_~temp~0#1.base|) 0)) (.cse9 (= (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base|) .cse6 0) .cse7 0)) |c_#memory_$Pointer$.offset|)) (.cse10 (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| 12) |c_#length|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (exists ((v_DerPreprocessor_33 Int)) (= (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store .cse5 .cse6 v_DerPreprocessor_33) .cse7 .cse8)) |c_#memory_int|)) .cse9 .cse10) (and (exists ((v_DerPreprocessor_34 Int)) (= (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store .cse5 .cse6 v_DerPreprocessor_34) .cse7 .cse8)) |c_#memory_int|)) (= |c_node_create_#in~data#1| 1) .cse0 .cse1 .cse2 .cse3 (exists ((|v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_36| Int)) (let ((.cse11 (select (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_36|) 0))) (and (<= 0 |v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_36|) (<= 0 .cse11) (<= .cse11 0)))) .cse4 .cse9 .cse10)))) (= |c_node_create_#in~data#1| |c_node_create_~data#1|) (<= 0 |c_#NULL.base|) (= |c_node_create_~temp~0#1.offset| 0) (<= 1 |c_node_create_#in~data#1|) (= (select |c_#valid| |c_node_create_~temp~0#1.base|) 1) (<= 0 |c_#NULL.offset|) (<= 0 |c_#StackHeapBarrier|) (<= |c_node_create_#in~data#1| 1) (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) (<= (+ 12 |c_node_create_~temp~0#1.offset|) (select |c_#length| |c_node_create_~temp~0#1.base|))) is different from true [2022-11-20 21:12:57,559 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6565#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:57,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:57,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:12:57,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 53 [2022-11-20 21:12:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007575510] [2022-11-20 21:12:57,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:57,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 21:12:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 21:12:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=5409, Unknown=8, NotChecked=298, Total=6006 [2022-11-20 21:12:57,563 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 53 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 47 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:59,952 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2022-11-20 21:12:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 21:12:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 47 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 47 [2022-11-20 21:12:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:59,954 INFO L225 Difference]: With dead ends: 102 [2022-11-20 21:12:59,954 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 21:12:59,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2458 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=422, Invalid=7764, Unknown=12, NotChecked=358, Total=8556 [2022-11-20 21:12:59,956 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:59,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 837 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 886 Invalid, 0 Unknown, 284 Unchecked, 0.9s Time] [2022-11-20 21:12:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 21:12:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2022-11-20 21:12:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 92 states have internal predecessors, (103), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:12:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2022-11-20 21:12:59,961 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 47 [2022-11-20 21:12:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:59,961 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2022-11-20 21:12:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 47 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:12:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2022-11-20 21:12:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 21:12:59,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:59,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:59,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 21:13:00,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:00,170 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:13:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1930170644, now seen corresponding path program 1 times [2022-11-20 21:13:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:00,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296593573] [2022-11-20 21:13:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:13:00,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:00,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296593573] [2022-11-20 21:13:00,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296593573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:00,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:13:00,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 21:13:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841774765] [2022-11-20 21:13:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 21:13:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 21:13:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:13:00,999 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 20 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:13:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:01,818 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2022-11-20 21:13:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:13:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2022-11-20 21:13:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:01,819 INFO L225 Difference]: With dead ends: 154 [2022-11-20 21:13:01,819 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 21:13:01,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-11-20 21:13:01,820 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 353 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:01,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 275 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 21:13:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 21:13:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 106. [2022-11-20 21:13:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 98 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:13:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2022-11-20 21:13:01,824 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 48 [2022-11-20 21:13:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:01,825 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2022-11-20 21:13:01,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:13:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2022-11-20 21:13:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 21:13:01,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:01,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 21:13:01,826 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:13:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1930170643, now seen corresponding path program 1 times [2022-11-20 21:13:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102347785] [2022-11-20 21:13:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:13:03,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102347785] [2022-11-20 21:13:03,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102347785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:03,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661188392] [2022-11-20 21:13:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:03,338 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:03,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 21:13:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:03,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-20 21:13:03,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:03,689 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 [2022-11-20 21:13:04,077 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:04,077 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 [2022-11-20 21:13:04,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:04,378 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:13:04,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-20 21:13:04,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:04,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2022-11-20 21:13:04,611 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 7 treesize of output 3 [2022-11-20 21:13:04,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:04,976 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:13:04,976 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 44 treesize of output 42 [2022-11-20 21:13:04,985 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 21:13:04,985 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 [2022-11-20 21:13:04,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:04,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:13:05,192 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 [2022-11-20 21:13:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:05,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:05,622 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3294 (Array Int Int)) (v_ArrVal_3295 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_43| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_43|) 0)) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_43| v_ArrVal_3294))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_43| v_ArrVal_3295) |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)) 0)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_43| |c_#StackHeapBarrier|)))) is different from false [2022-11-20 21:13:05,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661188392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:05,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1067148095] [2022-11-20 21:13:05,625 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-20 21:13:05,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:13:05,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:13:05,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:13:05,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:13:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:13:05,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:05,686 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 [2022-11-20 21:13:05,689 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 [2022-11-20 21:13:05,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:05,700 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 13 treesize of output 9 [2022-11-20 21:13:05,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:13:05,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:05,714 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 23 treesize of output 22 [2022-11-20 21:13:05,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:05,735 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 [2022-11-20 21:13:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:05,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:05,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:05,886 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:13:05,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:05,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:13:05,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:05,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:05,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:13:05,965 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 27 treesize of output 11 [2022-11-20 21:13:05,976 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:13:05,989 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:13:06,105 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:13:06,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:13:06,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:13:06,212 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 7 treesize of output 3 [2022-11-20 21:13:06,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:13:06,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:13:06,246 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 178 treesize of output 170 [2022-11-20 21:13:06,358 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:13:06,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 183 [2022-11-20 21:13:06,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 186 [2022-11-20 21:13:06,452 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 190 treesize of output 182 [2022-11-20 21:13:06,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 168 [2022-11-20 21:13:06,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:13:06,526 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 [2022-11-20 21:13:06,586 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 [2022-11-20 21:13:06,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:06,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:06,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:06,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:06,635 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 27 treesize of output 11 [2022-11-20 21:13:06,679 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 [2022-11-20 21:13:06,686 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 9 treesize of output 3 [2022-11-20 21:13:06,693 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 [2022-11-20 21:13:06,701 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 9 treesize of output 3 [2022-11-20 21:13:06,711 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 7 treesize of output 3 [2022-11-20 21:13:06,739 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 [2022-11-20 21:13:06,747 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 9 treesize of output 3 [2022-11-20 21:13:06,756 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 [2022-11-20 21:13:06,763 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 9 treesize of output 3 [2022-11-20 21:13:06,773 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 7 treesize of output 3 [2022-11-20 21:13:06,802 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 [2022-11-20 21:13:06,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:13:06,817 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 11 treesize of output 7 [2022-11-20 21:13:06,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:06,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:06,864 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 27 treesize of output 11 [2022-11-20 21:13:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:06,890 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 23 treesize of output 22 [2022-11-20 21:13:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:06,904 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 27 treesize of output 11 [2022-11-20 21:13:06,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:06,923 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 23 treesize of output 22 [2022-11-20 21:13:07,026 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:13:07,026 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 158 treesize of output 109 [2022-11-20 21:13:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:13:07,063 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:07,064 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 [2022-11-20 21:13:07,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,083 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 [2022-11-20 21:13:07,106 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 7 treesize of output 3 [2022-11-20 21:13:07,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 106 [2022-11-20 21:13:07,220 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:13:07,220 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 113 treesize of output 76 [2022-11-20 21:13:07,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,242 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 [2022-11-20 21:13:07,259 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:07,259 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 [2022-11-20 21:13:07,285 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 7 treesize of output 3 [2022-11-20 21:13:07,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:07,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:07,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:07,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:07,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:07,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:07,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:07,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:07,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:07,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:07,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:07,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:07,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,500 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 27 treesize of output 11 [2022-11-20 21:13:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,514 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 23 treesize of output 22 [2022-11-20 21:13:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,532 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 23 treesize of output 22 [2022-11-20 21:13:07,664 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:13:07,664 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 158 treesize of output 109 [2022-11-20 21:13:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:13:07,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,702 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 [2022-11-20 21:13:07,718 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:07,718 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 [2022-11-20 21:13:07,742 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 7 treesize of output 3 [2022-11-20 21:13:07,831 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:13:07,831 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 158 treesize of output 109 [2022-11-20 21:13:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:07,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:13:07,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:07,871 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 [2022-11-20 21:13:07,888 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:07,889 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 [2022-11-20 21:13:07,916 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 7 treesize of output 3 [2022-11-20 21:13:08,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:08,002 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 160 [2022-11-20 21:13:08,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:08,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 151 [2022-11-20 21:13:08,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:08,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 155 [2022-11-20 21:13:08,069 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 27 treesize of output 11 [2022-11-20 21:13:08,080 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 0 case distinctions, treesize of input 168 treesize of output 149 [2022-11-20 21:13:08,091 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 0 case distinctions, treesize of input 156 treesize of output 137 [2022-11-20 21:13:08,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:08,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:08,197 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 [2022-11-20 21:13:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,208 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 27 treesize of output 11 [2022-11-20 21:13:08,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:08,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:08,349 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 7 treesize of output 3 [2022-11-20 21:13:08,359 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 7 treesize of output 3 [2022-11-20 21:13:08,413 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 7 treesize of output 3 [2022-11-20 21:13:08,429 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 7 treesize of output 3 [2022-11-20 21:13:08,522 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-11-20 21:13:08,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 36 [2022-11-20 21:13:08,548 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-11-20 21:13:08,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 32 [2022-11-20 21:13:08,566 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 19 treesize of output 1 [2022-11-20 21:13:08,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:13:08,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,611 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-20 21:13:08,611 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 32 [2022-11-20 21:13:08,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:08,650 INFO L321 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-11-20 21:13:08,650 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 42 [2022-11-20 21:13:08,720 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:13:08,885 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:13:15,890 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7350#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= (+ |ULTIMATE.start_dll_append_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_append_~head#1.base|)) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|)) (= |ULTIMATE.start_dll_append_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (or (not (= |ULTIMATE.start_dll_append_~last~0#1.offset| 0)) (not (= |ULTIMATE.start_dll_append_~last~0#1.base| 0))) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_append_~head#1.base|) 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:13:15,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:13:15,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:13:15,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 44 [2022-11-20 21:13:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639217105] [2022-11-20 21:13:15,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:13:15,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 21:13:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 21:13:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4836, Unknown=6, NotChecked=140, Total=5256 [2022-11-20 21:13:15,893 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 44 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:13:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:17,660 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2022-11-20 21:13:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 21:13:17,660 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 48 [2022-11-20 21:13:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:17,661 INFO L225 Difference]: With dead ends: 100 [2022-11-20 21:13:17,661 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 21:13:17,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=431, Invalid=7396, Unknown=9, NotChecked=174, Total=8010 [2022-11-20 21:13:17,663 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:17,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 828 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 822 Invalid, 0 Unknown, 102 Unchecked, 0.5s Time] [2022-11-20 21:13:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 21:13:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-20 21:13:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 92 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:13:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2022-11-20 21:13:17,667 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 48 [2022-11-20 21:13:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:17,667 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2022-11-20 21:13:17,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:13:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2022-11-20 21:13:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 21:13:17,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:17,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:17,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 21:13:17,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 21:13:17,879 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:13:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2001517243, now seen corresponding path program 1 times [2022-11-20 21:13:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:17,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936490401] [2022-11-20 21:13:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:13:18,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:18,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936490401] [2022-11-20 21:13:18,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936490401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:18,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641912278] [2022-11-20 21:13:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:18,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:18,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:18,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:18,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 21:13:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:18,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 21:13:18,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:18,927 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 8 treesize of output 4 [2022-11-20 21:13:18,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3494 (Array Int Int)) (|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_3494) |c_#memory_$Pointer$.base|) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-20 21:13:18,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:18,991 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 15 treesize of output 17 [2022-11-20 21:13:19,019 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 [2022-11-20 21:13:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 1 not checked. [2022-11-20 21:13:19,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:19,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641912278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:19,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1329877895] [2022-11-20 21:13:19,125 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-20 21:13:19,126 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:13:19,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:13:19,126 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:13:19,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:13:19,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:13:19,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:19,186 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 [2022-11-20 21:13:19,190 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 [2022-11-20 21:13:19,196 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 13 treesize of output 9 [2022-11-20 21:13:19,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:19,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:19,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:19,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:19,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:19,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:19,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:19,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:19,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:19,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:19,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:19,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:19,397 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 32 treesize of output 25 [2022-11-20 21:13:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:19,416 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 32 treesize of output 25 [2022-11-20 21:13:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,459 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:19,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:13:19,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:13:19,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:13:19,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:13:19,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:13:19,532 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 [2022-11-20 21:13:19,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,559 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:19,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:13:19,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:13:19,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:13:19,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:13:19,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:13:19,638 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 [2022-11-20 21:13:19,682 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 [2022-11-20 21:13:19,688 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 [2022-11-20 21:13:19,695 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 15 treesize of output 1 [2022-11-20 21:13:19,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,731 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 27 treesize of output 11 [2022-11-20 21:13:19,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:19,771 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 9 treesize of output 3 [2022-11-20 21:13:19,779 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 [2022-11-20 21:13:19,787 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 9 treesize of output 3 [2022-11-20 21:13:19,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:13:19,801 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 7 treesize of output 3 [2022-11-20 21:13:19,831 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 [2022-11-20 21:13:19,838 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 7 treesize of output 3 [2022-11-20 21:13:19,847 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 [2022-11-20 21:13:19,855 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 9 treesize of output 3 [2022-11-20 21:13:19,862 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 9 treesize of output 3 [2022-11-20 21:13:19,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:19,895 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 [2022-11-20 21:13:19,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:19,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:19,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,921 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 27 treesize of output 11 [2022-11-20 21:13:19,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:19,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,948 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 23 treesize of output 22 [2022-11-20 21:13:19,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,959 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 27 treesize of output 11 [2022-11-20 21:13:19,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:19,968 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 23 treesize of output 22 [2022-11-20 21:13:20,017 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 7 treesize of output 3 [2022-11-20 21:13:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,033 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:13:20,050 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:13:20,050 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 62 treesize of output 31 [2022-11-20 21:13:20,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,068 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 [2022-11-20 21:13:20,083 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:20,083 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 [2022-11-20 21:13:20,133 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 7 treesize of output 3 [2022-11-20 21:13:20,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:13:20,165 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:13:20,165 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 62 treesize of output 31 [2022-11-20 21:13:20,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,183 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 [2022-11-20 21:13:20,198 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:20,198 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 [2022-11-20 21:13:20,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:20,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:20,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,393 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 27 treesize of output 11 [2022-11-20 21:13:20,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,403 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 23 treesize of output 22 [2022-11-20 21:13:20,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,414 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 23 treesize of output 22 [2022-11-20 21:13:20,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:13:20,513 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:13:20,513 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 62 treesize of output 31 [2022-11-20 21:13:20,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,532 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 [2022-11-20 21:13:20,547 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:20,548 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 [2022-11-20 21:13:20,565 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 7 treesize of output 3 [2022-11-20 21:13:20,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 55 [2022-11-20 21:13:20,630 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 21:13:20,630 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 62 treesize of output 31 [2022-11-20 21:13:20,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:20,650 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 [2022-11-20 21:13:20,665 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:20,666 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 [2022-11-20 21:13:20,681 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 7 treesize of output 3 [2022-11-20 21:13:20,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:20,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:20,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:20,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:20,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:20,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:20,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:20,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:20,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:20,854 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:20,985 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 7 treesize of output 3 [2022-11-20 21:13:21,001 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 7 treesize of output 3 [2022-11-20 21:13:21,053 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 7 treesize of output 3 [2022-11-20 21:13:21,063 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 7 treesize of output 3 [2022-11-20 21:13:21,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:21,201 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-20 21:13:21,201 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 240 treesize of output 228 [2022-11-20 21:13:21,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:21,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:21,221 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:21,222 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 2 case distinctions, treesize of input 235 treesize of output 221 [2022-11-20 21:13:21,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:21,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:21,247 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 2 case distinctions, treesize of input 235 treesize of output 221 [2022-11-20 21:13:21,757 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2022-11-20 21:13:21,927 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:13:27,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7814#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_main_~count~0#1| 1) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:13:27,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:13:27,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:13:27,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2022-11-20 21:13:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904341273] [2022-11-20 21:13:27,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:13:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 21:13:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 21:13:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1982, Unknown=7, NotChecked=90, Total=2256 [2022-11-20 21:13:27,842 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 23 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:13:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:28,350 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2022-11-20 21:13:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 21:13:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2022-11-20 21:13:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:28,352 INFO L225 Difference]: With dead ends: 93 [2022-11-20 21:13:28,352 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 21:13:28,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=255, Invalid=2604, Unknown=7, NotChecked=104, Total=2970 [2022-11-20 21:13:28,353 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:28,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 335 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 368 Invalid, 0 Unknown, 61 Unchecked, 0.3s Time] [2022-11-20 21:13:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 21:13:28,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-20 21:13:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 85 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:13:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2022-11-20 21:13:28,357 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 48 [2022-11-20 21:13:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:28,357 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2022-11-20 21:13:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:13:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2022-11-20 21:13:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 21:13:28,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:28,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:28,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 21:13:28,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 21:13:28,567 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:13:28,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:28,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1240882967, now seen corresponding path program 1 times [2022-11-20 21:13:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:28,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031484332] [2022-11-20 21:13:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:13:29,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:29,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031484332] [2022-11-20 21:13:29,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031484332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:29,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066022868] [2022-11-20 21:13:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:29,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:29,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:29,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 21:13:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:29,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 21:13:29,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:30,282 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 18 treesize of output 10 [2022-11-20 21:13:30,374 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3708 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_3708))) (exists ((v_ArrVal_3709 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_3709)))) is different from true [2022-11-20 21:13:30,382 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3708 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_3708))) (exists ((v_ArrVal_3710 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_3710)))) is different from true [2022-11-20 21:13:30,390 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3711 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_#res#1.base| v_ArrVal_3711) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3708 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_3708)))) is different from true [2022-11-20 21:13:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:30,403 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 24 treesize of output 24 [2022-11-20 21:13:30,419 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 21:13:30,419 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 16 treesize of output 26 [2022-11-20 21:13:30,842 INFO L321 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2022-11-20 21:13:30,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 40 [2022-11-20 21:13:30,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:30,857 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 24 treesize of output 24 [2022-11-20 21:13:30,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-20 21:13:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-20 21:13:30,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:31,748 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3712 Int) (|ULTIMATE.start_dll_append_~last~0#1.offset| Int) (|ULTIMATE.start_dll_append_~last~0#1.base| Int) (v_ArrVal_3721 (Array Int Int)) (v_ArrVal_3714 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_50| Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_50| v_ArrVal_3721))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_50| 1)) (.cse2 (select .cse1 |ULTIMATE.start_dll_append_~last~0#1.base|)) (.cse3 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (not (= (select .cse0 (select (select .cse1 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) 1)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_50| |c_#StackHeapBarrier|)) (= (select .cse0 (select (select (store (store .cse1 |ULTIMATE.start_dll_append_~last~0#1.base| (store .cse2 .cse3 v_ArrVal_3712)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_50| v_ArrVal_3714) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1) (not (= (select .cse2 .cse3) 0)))))) is different from false [2022-11-20 21:13:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066022868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:31,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1851330563] [2022-11-20 21:13:31,751 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-20 21:13:31,751 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:13:31,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:13:31,752 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:13:31,752 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:13:31,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:13:31,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:31,807 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 [2022-11-20 21:13:31,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 21:13:31,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:31,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:13:31,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:31,831 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 23 treesize of output 22 [2022-11-20 21:13:31,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:31,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:31,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:13:31,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:31,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:13:31,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:13:31,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:32,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:13:32,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:13:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:32,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,117 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:32,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:13:32,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:13:32,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:13:32,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:13:32,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:13:32,217 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 [2022-11-20 21:13:32,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,245 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:32,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:13:32,275 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 [2022-11-20 21:13:32,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:13:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:13:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:13:32,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:13:32,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:13:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:13:32,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:13:32,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,517 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:13:32,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,535 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:13:32,575 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 27 treesize of output 11 [2022-11-20 21:13:32,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,619 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 27 treesize of output 11 [2022-11-20 21:13:32,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,646 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:13:32,646 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 1 case distinctions, treesize of input 225 treesize of output 223 [2022-11-20 21:13:32,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,678 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:13:32,679 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:13:32,828 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 11 treesize of output 7 [2022-11-20 21:13:32,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:32,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,854 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:13:32,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:32,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:32,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,889 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 27 treesize of output 11 [2022-11-20 21:13:32,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,899 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 23 treesize of output 22 [2022-11-20 21:13:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:32,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:32,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:13:32,988 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 [2022-11-20 21:13:32,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:13:33,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:33,014 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 27 treesize of output 11 [2022-11-20 21:13:33,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:33,041 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 23 treesize of output 22 [2022-11-20 21:13:33,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:33,054 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 27 treesize of output 11 [2022-11-20 21:13:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:33,065 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 23 treesize of output 22 [2022-11-20 21:13:33,232 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:13:33,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:13:33,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:33,453 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 205 treesize of output 215 [2022-11-20 21:13:33,574 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:33,589 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 7 treesize of output 3 [2022-11-20 21:13:33,602 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 7 treesize of output 3 [2022-11-20 21:13:33,702 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:13:33,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:13:34,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:34,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 476 [2022-11-20 21:13:34,584 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 7 treesize of output 3 [2022-11-20 21:13:34,603 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:34,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:13:34,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:13:34,806 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 19 treesize of output 1 [2022-11-20 21:13:34,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:13:34,853 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:13:34,854 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 [2022-11-20 21:13:34,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:13:34,897 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:13:34,897 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 32 [2022-11-20 21:13:35,031 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:13:35,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:13:35,260 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 [2022-11-20 21:13:35,389 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:13:35,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:13:35,564 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:35,572 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:35,593 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:35,600 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:13:35,623 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:13:35,631 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 [2022-11-20 21:13:35,636 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 [2022-11-20 21:13:35,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:35,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:13:35,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:35,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:35,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:35,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:13:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:35,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:35,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:13:35,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:13:35,725 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:13:42,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8285#(and (= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:13:42,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:13:42,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:13:42,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2022-11-20 21:13:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484898270] [2022-11-20 21:13:42,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:13:42,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 21:13:42,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 21:13:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=4818, Unknown=5, NotChecked=572, Total=5700 [2022-11-20 21:13:42,865 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 42 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:13:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:44,168 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2022-11-20 21:13:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 21:13:44,169 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2022-11-20 21:13:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:44,170 INFO L225 Difference]: With dead ends: 103 [2022-11-20 21:13:44,170 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 21:13:44,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2380 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=474, Invalid=6676, Unknown=6, NotChecked=676, Total=7832 [2022-11-20 21:13:44,171 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 83 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:44,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 515 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 702 Invalid, 0 Unknown, 266 Unchecked, 0.5s Time] [2022-11-20 21:13:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 21:13:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2022-11-20 21:13:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 87 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:13:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-20 21:13:44,175 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 51 [2022-11-20 21:13:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-20 21:13:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 21:13:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-20 21:13:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 21:13:44,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:44,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:44,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-20 21:13:44,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 21:13:44,382 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:13:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1240882968, now seen corresponding path program 1 times [2022-11-20 21:13:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:44,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388762361] [2022-11-20 21:13:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:13:46,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:46,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388762361] [2022-11-20 21:13:46,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388762361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:46,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126494718] [2022-11-20 21:13:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:46,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:46,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:46,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:46,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 21:13:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:46,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-20 21:13:46,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:46,838 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 [2022-11-20 21:13:46,844 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 [2022-11-20 21:13:46,901 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 [2022-11-20 21:13:46,904 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 [2022-11-20 21:13:46,951 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3933 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_3933))) (exists ((v_ArrVal_3934 Int)) (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| v_ArrVal_3934) |c_#length|))) is different from true [2022-11-20 21:13:46,974 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3933 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_3933))) (exists ((v_ArrVal_3934 Int)) (= (store |c_old(#length)| |c_node_create_#res#1.base| v_ArrVal_3934) |c_#length|))) is different from true [2022-11-20 21:13:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:46,985 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 [2022-11-20 21:13:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:46,993 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 [2022-11-20 21:13:47,295 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 [2022-11-20 21:13:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:47,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:13:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:47,467 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 21:13:47,467 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 18 [2022-11-20 21:13:47,473 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 [2022-11-20 21:13:47,835 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 7 treesize of output 3 [2022-11-20 21:13:47,839 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 [2022-11-20 21:13:47,843 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 [2022-11-20 21:13:47,984 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3938 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| v_ArrVal_3938) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3937 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_3937) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3936 Int)) (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| v_ArrVal_3936) |c_#length|))) is different from true [2022-11-20 21:13:47,995 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3940 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| v_ArrVal_3940) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3939 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_3939))) (exists ((v_ArrVal_3936 Int)) (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| v_ArrVal_3936) |c_#length|))) is different from true [2022-11-20 21:13:48,007 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_3936 Int)) (= |c_#length| (store |c_old(#length)| |c_node_create_#res#1.base| v_ArrVal_3936))) (exists ((v_ArrVal_3942 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_node_create_#res#1.base| v_ArrVal_3942) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3941 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_#res#1.base| v_ArrVal_3941)))) is different from true [2022-11-20 21:13:48,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:48,019 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 14 treesize of output 16 [2022-11-20 21:13:48,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:48,026 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 [2022-11-20 21:13:48,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:48,035 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 23 treesize of output 23 [2022-11-20 21:13:48,686 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:13:48,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2022-11-20 21:13:48,695 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 36 treesize of output 31 [2022-11-20 21:13:48,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:13:48,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:48,804 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 30 treesize of output 30 [2022-11-20 21:13:48,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:48,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-11-20 21:13:48,903 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 31 treesize of output 19 [2022-11-20 21:13:48,907 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 26 treesize of output 14 [2022-11-20 21:13:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 13 not checked. [2022-11-20 21:13:48,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:49,131 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3947 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_3947) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (forall ((v_ArrVal_3946 (Array Int Int)) (v_ArrVal_3947 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_3947) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_3946) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-11-20 21:14:08,871 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| Int)) (or (forall ((v_ArrVal_3959 (Array Int Int)) (v_ArrVal_3958 Int) (v_ArrVal_3960 (Array Int Int))) (let ((.cse0 (store |c_#length| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3958)) (.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3959)) (.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3960))) (or (forall ((|ULTIMATE.start_dll_append_~last~0#1.offset| Int)) (let ((.cse2 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (forall ((|ULTIMATE.start_dll_append_~last~0#1.base| Int)) (or (not (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select .cse0 |ULTIMATE.start_dll_append_~last~0#1.base|))) (not (= (select (select .cse1 |ULTIMATE.start_dll_append_~last~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_3943 Int) (v_ArrVal_3947 (Array Int Int))) (<= 0 (select (select (store (store .cse3 |ULTIMATE.start_dll_append_~last~0#1.base| (store (select .cse3 |ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 v_ArrVal_3943)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3947) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (not (<= 0 .cse2))))) (< (select .cse0 (select (select .cse1 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse3 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 8))))) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| |c_#StackHeapBarrier|)))) (forall ((|v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| Int)) (or (forall ((v_ArrVal_3959 (Array Int Int)) (v_ArrVal_3958 Int) (v_ArrVal_3960 (Array Int Int))) (let ((.cse4 (store |c_#length| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3958)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3959)) (.cse7 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3960))) (or (forall ((|ULTIMATE.start_dll_append_~last~0#1.offset| Int)) (let ((.cse6 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (forall ((|ULTIMATE.start_dll_append_~last~0#1.base| Int)) (or (not (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select .cse4 |ULTIMATE.start_dll_append_~last~0#1.base|))) (not (= (select (select .cse5 |ULTIMATE.start_dll_append_~last~0#1.base|) .cse6) 0)) (forall ((v_ArrVal_3943 Int) (v_ArrVal_3945 (Array Int Int)) (v_ArrVal_3946 (Array Int Int)) (v_ArrVal_3947 (Array Int Int))) (<= (+ 4 (select (select (store (store .cse7 |ULTIMATE.start_dll_append_~last~0#1.base| (store (select .cse7 |ULTIMATE.start_dll_append_~last~0#1.base|) .cse6 v_ArrVal_3943)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3947) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select .cse4 (select (select (store (store .cse5 |ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_3945) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| v_ArrVal_3946) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) (not (<= 0 .cse6))))) (< (select .cse4 (select (select .cse5 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse7 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 8))))) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_54| |c_#StackHeapBarrier|))))) is different from false [2022-11-20 21:14:08,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126494718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340647320] [2022-11-20 21:14:08,877 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-20 21:14:08,877 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:14:08,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:14:08,877 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:14:08,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:14:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:14:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:14:08,934 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 [2022-11-20 21:14:08,938 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 [2022-11-20 21:14:08,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:08,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:08,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:08,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:08,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:08,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:08,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:08,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:08,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:09,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:14:09,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:14:09,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:14:09,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:14:09,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:14:09,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:14:09,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:14:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:14:09,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,171 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 27 treesize of output 11 [2022-11-20 21:14:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,220 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:14:09,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:14:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:09,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:14:09,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:14:09,276 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 [2022-11-20 21:14:09,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,291 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 17 treesize of output 7 [2022-11-20 21:14:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,317 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:14:09,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:14:09,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:14:09,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:14:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:09,379 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 [2022-11-20 21:14:09,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:09,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:14:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:14:09,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:14:09,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,561 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:14:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,576 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:14:09,615 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 27 treesize of output 11 [2022-11-20 21:14:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,703 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:14:09,704 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:14:09,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:09,731 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:14:09,731 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 1 case distinctions, treesize of input 217 treesize of output 215 [2022-11-20 21:14:09,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,777 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 27 treesize of output 11 [2022-11-20 21:14:09,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:09,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:09,869 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 [2022-11-20 21:14:09,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:09,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,897 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 27 treesize of output 11 [2022-11-20 21:14:09,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,914 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 27 treesize of output 11 [2022-11-20 21:14:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,924 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 23 treesize of output 22 [2022-11-20 21:14:09,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:09,936 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 23 treesize of output 22 [2022-11-20 21:14:10,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:10,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:10,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:10,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:10,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:10,035 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 27 treesize of output 11 [2022-11-20 21:14:10,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:10,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:10,066 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 23 treesize of output 22 [2022-11-20 21:14:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:10,077 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 23 treesize of output 22 [2022-11-20 21:14:10,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:10,091 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 27 treesize of output 11 [2022-11-20 21:14:10,258 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:10,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:10,436 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 [2022-11-20 21:14:10,497 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:10,514 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 7 treesize of output 3 [2022-11-20 21:14:10,526 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 7 treesize of output 3 [2022-11-20 21:14:10,643 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:10,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:11,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:11,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 461 treesize of output 459 [2022-11-20 21:14:11,443 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 7 treesize of output 3 [2022-11-20 21:14:11,454 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 7 treesize of output 3 [2022-11-20 21:14:11,470 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:11,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:14:11,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:14:11,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:14:11,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:14:11,779 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:14:11,779 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 22 [2022-11-20 21:14:11,810 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:14:11,810 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 32 [2022-11-20 21:14:11,947 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:11,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:12,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:12,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 382 treesize of output 392 [2022-11-20 21:14:12,804 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:12,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:14:12,962 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:13,011 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:14:13,023 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 [2022-11-20 21:14:13,028 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 [2022-11-20 21:14:13,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:13,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:13,056 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 13 treesize of output 9 [2022-11-20 21:14:13,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:13,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:13,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:13,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:13,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:13,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:13,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:22,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8795#(and (= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:14:22,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:14:22,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:14:22,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 49 [2022-11-20 21:14:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699965484] [2022-11-20 21:14:22,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:14:22,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 21:14:22,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 21:14:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=5865, Unknown=14, NotChecked=1120, Total=7310 [2022-11-20 21:14:22,014 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 50 states, 42 states have (on average 2.119047619047619) internal successors, (89), 42 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:14:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:25,179 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-11-20 21:14:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 21:14:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.119047619047619) internal successors, (89), 42 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-20 21:14:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:25,181 INFO L225 Difference]: With dead ends: 98 [2022-11-20 21:14:25,181 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 21:14:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 3094 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=548, Invalid=8971, Unknown=15, NotChecked=1386, Total=10920 [2022-11-20 21:14:25,182 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 211 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:25,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 581 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 891 Invalid, 0 Unknown, 391 Unchecked, 0.9s Time] [2022-11-20 21:14:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 21:14:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2022-11-20 21:14:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 87 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:14:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-20 21:14:25,187 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 51 [2022-11-20 21:14:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:25,187 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-20 21:14:25,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.119047619047619) internal successors, (89), 42 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 21:14:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-20 21:14:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 21:14:25,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:25,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:14:25,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 21:14:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:25,389 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:14:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1512374783, now seen corresponding path program 1 times [2022-11-20 21:14:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:25,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132446408] [2022-11-20 21:14:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:29,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132446408] [2022-11-20 21:14:29,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132446408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155144119] [2022-11-20 21:14:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:29,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:29,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:29,539 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:14:29,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 21:14:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:29,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-20 21:14:29,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:14:29,915 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 [2022-11-20 21:14:29,999 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 [2022-11-20 21:14:30,118 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:14:30,118 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 12 treesize of output 14 [2022-11-20 21:14:30,394 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:14:30,394 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 [2022-11-20 21:14:30,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:30,572 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 21:14:30,572 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 16 treesize of output 18 [2022-11-20 21:14:30,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-20 21:14:30,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-20 21:14:30,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:30,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-20 21:14:31,116 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:14:31,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-20 21:14:31,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 21:14:31,490 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:31,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 28 [2022-11-20 21:14:31,497 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 [2022-11-20 21:14:31,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:31,843 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:14:31,844 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 59 treesize of output 57 [2022-11-20 21:14:31,866 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 21:14:31,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 treesize of output 28 [2022-11-20 21:14:31,902 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 [2022-11-20 21:14:31,917 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 21:14:31,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 15 [2022-11-20 21:14:31,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:31,937 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 14 treesize of output 16 [2022-11-20 21:14:33,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:33,077 INFO L321 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-11-20 21:14:33,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 177 treesize of output 95 [2022-11-20 21:14:33,096 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 21:14:33,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 88 [2022-11-20 21:14:33,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-20 21:14:33,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:33,260 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:14:33,260 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 58 treesize of output 56 [2022-11-20 21:14:33,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 21:14:33,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:14:33,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:33,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 26 [2022-11-20 21:14:33,418 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 15 treesize of output 7 [2022-11-20 21:14:33,513 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 15 treesize of output 7 [2022-11-20 21:14:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:33,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:14:33,602 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4196 (Array Int Int)) (v_ArrVal_4197 (Array Int Int)) (v_ArrVal_4195 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4196) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4195) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4197) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2022-11-20 21:14:33,615 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4196 (Array Int Int)) (v_ArrVal_4197 (Array Int Int)) (v_ArrVal_4192 Int) (v_ArrVal_4191 Int) (v_ArrVal_4194 (Array Int Int)) (v_ArrVal_4195 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_4194) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4196) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 v_ArrVal_4191)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4195) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 v_ArrVal_4192)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_4197) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-11-20 21:14:35,056 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4196 (Array Int Int)) (v_ArrVal_4197 (Array Int Int)) (v_ArrVal_4192 Int) (v_ArrVal_4210 (Array Int Int)) (v_ArrVal_4211 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_53| Int) (v_ArrVal_4191 Int) (v_ArrVal_4212 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| Int) (v_ArrVal_4194 (Array Int Int)) (v_ArrVal_4195 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4211)) (.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4210))) (let ((.cse2 (select (select .cse3 (select (select .cse3 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse4 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse0 (select .cse3 .cse2)) (.cse1 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_53| 4))) (or (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| |c_#StackHeapBarrier|)) (not (= (select .cse0 .cse1) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58|) 0)) (= (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4212) .cse2 v_ArrVal_4194) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4196) (select (select (store (store .cse3 .cse2 (store .cse0 .cse1 v_ArrVal_4191)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4195) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store .cse4 .cse2 (store (select .cse4 .cse2) .cse1 v_ArrVal_4192)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_58| v_ArrVal_4197) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|)))))) is different from false [2022-11-20 21:14:35,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155144119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989462921] [2022-11-20 21:14:35,063 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:14:35,063 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:14:35,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:14:35,064 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:14:35,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:14:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:14:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:14:35,129 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 [2022-11-20 21:14:35,133 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 [2022-11-20 21:14:35,139 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 13 treesize of output 9 [2022-11-20 21:14:35,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:35,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:35,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:35,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:35,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:35,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:35,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:14:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:14:35,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:14:35,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:14:35,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:14:35,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:14:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:14:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:14:35,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:14:35,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,452 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:14:35,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:14:35,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:14:35,492 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 [2022-11-20 21:14:35,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:35,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:14:35,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,552 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:14:35,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:14:35,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:14:35,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:35,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:14:35,620 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 [2022-11-20 21:14:35,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:14:35,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:14:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:14:35,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:14:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,795 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:14:35,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,810 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:14:35,849 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 27 treesize of output 11 [2022-11-20 21:14:35,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,912 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:14:35,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 223 [2022-11-20 21:14:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:35,945 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:14:35,945 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:14:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:35,993 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 27 treesize of output 11 [2022-11-20 21:14:36,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:36,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:14:36,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:14:36,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,119 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:14:36,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,146 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 23 treesize of output 22 [2022-11-20 21:14:36,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,179 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 27 treesize of output 11 [2022-11-20 21:14:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,189 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 23 treesize of output 22 [2022-11-20 21:14:36,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:36,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:36,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:36,284 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 13 treesize of output 9 [2022-11-20 21:14:36,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,300 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 27 treesize of output 11 [2022-11-20 21:14:36,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,320 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 23 treesize of output 22 [2022-11-20 21:14:36,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,334 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 27 treesize of output 11 [2022-11-20 21:14:36,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:36,344 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 23 treesize of output 22 [2022-11-20 21:14:36,523 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:36,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:36,764 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 [2022-11-20 21:14:36,832 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 7 treesize of output 3 [2022-11-20 21:14:36,845 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 7 treesize of output 3 [2022-11-20 21:14:36,861 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:36,965 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:36,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:37,177 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 [2022-11-20 21:14:37,239 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 7 treesize of output 3 [2022-11-20 21:14:37,254 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:37,271 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 7 treesize of output 3 [2022-11-20 21:14:37,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:14:37,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:14:37,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:14:37,501 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:14:37,501 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 32 [2022-11-20 21:14:37,530 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:14:37,531 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 [2022-11-20 21:14:37,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:14:37,706 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:37,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:14:38,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:38,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 476 treesize of output 478 [2022-11-20 21:14:38,813 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:14:38,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:14:39,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:39,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 92 [2022-11-20 21:14:39,039 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 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 21:14:39,060 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:39,069 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:14:39,096 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:14:39,103 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 [2022-11-20 21:14:39,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 21:14:39,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:14:39,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:39,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:39,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:39,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:39,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:14:39,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:39,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:39,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:39,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:14:39,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:39,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:39,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:14:39,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:49,111 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9333#(and (= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|)) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_append_~new_last~0#1.base|) 1) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_append_~new_last~0#1.base|)) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_append_~last~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select |#valid| |ULTIMATE.start_dll_append_~last~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2022-11-20 21:14:49,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:14:49,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:14:49,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 57 [2022-11-20 21:14:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033265553] [2022-11-20 21:14:49,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:14:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-20 21:14:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-20 21:14:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=7695, Unknown=5, NotChecked=534, Total=8556 [2022-11-20 21:14:49,114 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 58 states, 50 states have (on average 1.78) internal successors, (89), 49 states have internal predecessors, (89), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:14:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:53,356 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2022-11-20 21:14:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 21:14:53,357 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 50 states have (on average 1.78) internal successors, (89), 49 states have internal predecessors, (89), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2022-11-20 21:14:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:53,358 INFO L225 Difference]: With dead ends: 124 [2022-11-20 21:14:53,358 INFO L226 Difference]: Without dead ends: 124 [2022-11-20 21:14:53,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 111 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=581, Invalid=11416, Unknown=5, NotChecked=654, Total=12656 [2022-11-20 21:14:53,360 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 293 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:53,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 891 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1793 Invalid, 0 Unknown, 4 Unchecked, 1.6s Time] [2022-11-20 21:14:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-20 21:14:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2022-11-20 21:14:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 94 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:14:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2022-11-20 21:14:53,365 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 53 [2022-11-20 21:14:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2022-11-20 21:14:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 50 states have (on average 1.78) internal successors, (89), 49 states have internal predecessors, (89), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:14:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2022-11-20 21:14:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 21:14:53,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:53,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 21:14:53,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 21:14:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:53,573 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:14:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1693120408, now seen corresponding path program 1 times [2022-11-20 21:14:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:53,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541907346] [2022-11-20 21:14:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:56,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:56,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541907346] [2022-11-20 21:14:56,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541907346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:56,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033568160] [2022-11-20 21:14:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:56,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:56,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:56,596 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:14:56,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 21:14:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:56,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-20 21:14:56,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:14:56,992 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 6 treesize of output 5 [2022-11-20 21:14:57,066 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 5 treesize of output 3 [2022-11-20 21:14:57,245 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:14:57,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 21:14:57,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:14:57,697 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 21:14:57,698 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 18 [2022-11-20 21:14:57,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:14:58,123 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:14:58,124 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-20 21:14:58,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:58,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2022-11-20 21:14:58,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:14:58,485 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 7 treesize of output 3 [2022-11-20 21:14:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,970 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:14:58,970 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 60 treesize of output 54 [2022-11-20 21:14:58,983 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 21:14:58,983 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 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 21:14:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:59,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:14:59,967 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:14:59,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 156 treesize of output 113 [2022-11-20 21:14:59,986 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 21:14:59,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 21:15:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:00,144 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:15:00,145 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 78 treesize of output 66 [2022-11-20 21:15:00,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:00,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-11-20 21:15:00,297 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 34 treesize of output 22 [2022-11-20 21:15:00,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:00,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 28 [2022-11-20 21:15:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:15:00,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:15:01,366 INFO L321 Elim1Store]: treesize reduction 5, result has 89.4 percent of original size [2022-11-20 21:15:01,366 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 51 treesize of output 50 [2022-11-20 21:15:02,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033568160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:15:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1974948033] [2022-11-20 21:15:02,573 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:15:02,573 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:15:02,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:15:02,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:15:02,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:15:02,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:15:02,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:15:02,640 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 [2022-11-20 21:15:02,644 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 [2022-11-20 21:15:02,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:02,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:02,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:02,666 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 23 treesize of output 22 [2022-11-20 21:15:02,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:02,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:15:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:02,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:02,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:15:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:15:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:15:02,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:15:02,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:15:02,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:15:02,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:02,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:15:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:02,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:15:02,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:15:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,958 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:15:02,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:15:02,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:15:02,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:02,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:15:03,006 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 [2022-11-20 21:15:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:15:03,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:15:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,053 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:15:03,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:15:03,084 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 [2022-11-20 21:15:03,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:15:03,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:15:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:15:03,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:15:03,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:03,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:03,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:03,194 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 13 treesize of output 9 [2022-11-20 21:15:03,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,203 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 27 treesize of output 11 [2022-11-20 21:15:03,211 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 13 treesize of output 9 [2022-11-20 21:15:03,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,232 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 23 treesize of output 22 [2022-11-20 21:15:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,244 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 27 treesize of output 11 [2022-11-20 21:15:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,254 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 23 treesize of output 22 [2022-11-20 21:15:03,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:15:03,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:03,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:15:03,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,346 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 27 treesize of output 11 [2022-11-20 21:15:03,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:03,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:03,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,403 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 27 treesize of output 11 [2022-11-20 21:15:03,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,413 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 23 treesize of output 22 [2022-11-20 21:15:03,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:03,425 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 23 treesize of output 22 [2022-11-20 21:15:03,585 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:03,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:04,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:04,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 461 treesize of output 459 [2022-11-20 21:15:04,747 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 7 treesize of output 3 [2022-11-20 21:15:04,760 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 7 treesize of output 3 [2022-11-20 21:15:04,780 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:04,883 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:04,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:05,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:05,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 371 treesize of output 373 [2022-11-20 21:15:05,889 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 7 treesize of output 3 [2022-11-20 21:15:05,902 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 7 treesize of output 3 [2022-11-20 21:15:05,929 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:06,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:15:06,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:15:06,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:15:06,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:15:06,164 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:15:06,164 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 32 [2022-11-20 21:15:06,192 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:15:06,192 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 [2022-11-20 21:15:06,495 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:06,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:06,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:06,703 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 167 treesize of output 177 [2022-11-20 21:15:06,943 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:06,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:15:07,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:15:07,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:15:07,170 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:07,197 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:15:07,204 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 [2022-11-20 21:15:07,210 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 [2022-11-20 21:15:07,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:07,228 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 13 treesize of output 9 [2022-11-20 21:15:07,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:07,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:15:07,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:07,260 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 23 treesize of output 22 [2022-11-20 21:15:07,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:07,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:07,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:07,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:15:07,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:07,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:07,298 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:15:18,126 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9921#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:15:18,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:15:18,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:15:18,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2022-11-20 21:15:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368974568] [2022-11-20 21:15:18,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:15:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-20 21:15:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:15:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-20 21:15:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=9709, Unknown=37, NotChecked=0, Total=10100 [2022-11-20 21:15:18,128 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 62 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 51 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:15:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:15:22,861 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-11-20 21:15:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 21:15:22,862 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 51 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2022-11-20 21:15:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:15:22,862 INFO L225 Difference]: With dead ends: 120 [2022-11-20 21:15:22,862 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 21:15:22,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4205 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=632, Invalid=14093, Unknown=37, NotChecked=0, Total=14762 [2022-11-20 21:15:22,864 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 140 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:15:22,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 899 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2224 Invalid, 0 Unknown, 170 Unchecked, 1.9s Time] [2022-11-20 21:15:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 21:15:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2022-11-20 21:15:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 97 states have internal predecessors, (107), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:15:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-11-20 21:15:22,868 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 55 [2022-11-20 21:15:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:15:22,868 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-11-20 21:15:22,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 51 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:15:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-11-20 21:15:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 21:15:22,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:15:22,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 21:15:22,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 21:15:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:15:23,070 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:15:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:15:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1693120407, now seen corresponding path program 1 times [2022-11-20 21:15:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:15:23,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564506571] [2022-11-20 21:15:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:15:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:15:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:15:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:15:27,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:15:27,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564506571] [2022-11-20 21:15:27,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564506571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:15:27,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352931661] [2022-11-20 21:15:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:15:27,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:15:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:15:27,573 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:15:27,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 21:15:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:15:27,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-20 21:15:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:15:27,972 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 [2022-11-20 21:15:28,043 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 [2022-11-20 21:15:28,260 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:15:28,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 21:15:28,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:15:28,731 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 21:15:28,731 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 18 [2022-11-20 21:15:29,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:29,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-20 21:15:29,261 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:15:29,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 62 [2022-11-20 21:15:29,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 21:15:29,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:29,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 42 [2022-11-20 21:15:29,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 21:15:30,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:30,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:30,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 21:15:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:30,294 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:15:30,294 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 97 treesize of output 77 [2022-11-20 21:15:30,321 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-20 21:15:30,321 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:15:30,347 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:15:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 21:15:31,628 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:15:31,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 173 treesize of output 122 [2022-11-20 21:15:31,666 INFO L321 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-11-20 21:15:31,666 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 47 [2022-11-20 21:15:31,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:31,845 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:15:31,846 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 95 treesize of output 75 [2022-11-20 21:15:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:31,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 21:15:32,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:32,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:32,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:32,402 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 103 treesize of output 51 [2022-11-20 21:15:32,411 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 21:15:32,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-20 21:15:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:15:32,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:15:42,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352931661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:15:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965439147] [2022-11-20 21:15:42,362 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:15:42,362 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:15:42,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:15:42,363 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:15:42,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:15:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:15:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:15:42,434 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 [2022-11-20 21:15:42,439 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 [2022-11-20 21:15:42,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:42,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:42,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:42,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:42,471 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 23 treesize of output 22 [2022-11-20 21:15:42,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:15:42,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:42,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:15:42,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:15:42,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:15:42,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:42,668 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:15:42,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:42,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:15:42,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:42,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:42,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:42,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:15:42,762 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:15:42,775 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:15:42,813 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 27 treesize of output 11 [2022-11-20 21:15:42,863 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,045 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:15:43,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:15:43,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:15:43,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:15:43,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:15:43,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:15:43,225 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 [2022-11-20 21:15:43,238 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,240 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,242 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,321 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:15:43,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:15:43,442 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 [2022-11-20 21:15:43,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:15:43,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:15:43,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:15:43,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:15:43,499 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,501 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,503 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:43,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:43,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:43,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:15:43,592 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 27 treesize of output 11 [2022-11-20 21:15:43,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:43,617 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 13 treesize of output 9 [2022-11-20 21:15:43,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,645 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 23 treesize of output 22 [2022-11-20 21:15:43,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,660 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 27 treesize of output 11 [2022-11-20 21:15:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,674 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 23 treesize of output 22 [2022-11-20 21:15:43,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:43,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:43,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:43,802 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 27 treesize of output 11 [2022-11-20 21:15:43,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:43,820 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 13 treesize of output 9 [2022-11-20 21:15:43,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,859 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 23 treesize of output 22 [2022-11-20 21:15:43,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,872 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 23 treesize of output 22 [2022-11-20 21:15:43,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:43,887 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 27 treesize of output 11 [2022-11-20 21:15:44,082 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:44,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:44,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 21:15:44,298 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 7 treesize of output 3 [2022-11-20 21:15:44,316 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:44,328 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 7 treesize of output 3 [2022-11-20 21:15:44,441 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:44,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:44,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:44,717 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 167 treesize of output 177 [2022-11-20 21:15:44,823 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 7 treesize of output 3 [2022-11-20 21:15:44,839 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:44,854 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 7 treesize of output 3 [2022-11-20 21:15:45,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:15:45,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:15:45,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:15:45,091 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:15:45,091 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 [2022-11-20 21:15:45,128 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:15:45,128 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 32 [2022-11-20 21:15:45,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:15:45,437 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:45,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:15:45,575 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 [2022-11-20 21:15:45,723 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:15:45,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:15:45,864 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:45,876 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:15:45,900 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:15:45,908 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 [2022-11-20 21:15:45,913 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 [2022-11-20 21:15:45,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:45,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:45,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:45,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:15:45,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:15:45,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:15:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:45,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:45,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:15:45,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:15:46,005 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 [2022-11-20 21:15:46,010 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:15:59,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10514#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:15:59,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:15:59,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:15:59,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30] total 61 [2022-11-20 21:15:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647806904] [2022-11-20 21:15:59,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:15:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-20 21:15:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:15:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-20 21:15:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=10097, Unknown=39, NotChecked=0, Total=10506 [2022-11-20 21:15:59,989 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 63 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 53 states have internal predecessors, (98), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:16:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:16:06,968 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2022-11-20 21:16:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 21:16:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 53 states have internal predecessors, (98), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2022-11-20 21:16:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:16:06,969 INFO L225 Difference]: With dead ends: 123 [2022-11-20 21:16:06,969 INFO L226 Difference]: Without dead ends: 123 [2022-11-20 21:16:06,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=667, Invalid=14545, Unknown=40, NotChecked=0, Total=15252 [2022-11-20 21:16:06,970 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 175 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:16:06,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 749 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1767 Invalid, 0 Unknown, 167 Unchecked, 2.1s Time] [2022-11-20 21:16:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-20 21:16:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 104. [2022-11-20 21:16:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.25) internal successors, (105), 96 states have internal predecessors, (105), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:16:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-20 21:16:06,975 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 55 [2022-11-20 21:16:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:16:06,975 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-20 21:16:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 53 states have internal predecessors, (98), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:16:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-20 21:16:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 21:16:06,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:16:06,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:16:06,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 21:16:07,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:16:07,178 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:16:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:16:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -947036047, now seen corresponding path program 1 times [2022-11-20 21:16:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:16:07,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11203569] [2022-11-20 21:16:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:16:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:16:10,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:16:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11203569] [2022-11-20 21:16:10,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11203569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:16:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454081049] [2022-11-20 21:16:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:10,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:16:10,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:16:10,583 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:16:10,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 21:16:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:10,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-20 21:16:10,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:16:10,982 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 [2022-11-20 21:16:11,050 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 [2022-11-20 21:16:11,227 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 21:16:11,227 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 [2022-11-20 21:16:11,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-11-20 21:16:11,764 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 21:16:11,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 33 [2022-11-20 21:16:12,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:12,258 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:16:12,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2022-11-20 21:16:12,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:12,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 34 [2022-11-20 21:16:12,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:16:12,715 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 7 treesize of output 3 [2022-11-20 21:16:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:12,993 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:16:12,993 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 85 treesize of output 67 [2022-11-20 21:16:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:13,018 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:16:13,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2022-11-20 21:16:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:13,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:16:14,218 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:16:14,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 161 treesize of output 112 [2022-11-20 21:16:14,246 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 21:16:14,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2022-11-20 21:16:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:14,424 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:16:14,424 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 83 treesize of output 65 [2022-11-20 21:16:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:14,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:16:14,604 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 [2022-11-20 21:16:14,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:14,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 27 [2022-11-20 21:16:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:16:14,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:16:16,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454081049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:16:16,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [128858395] [2022-11-20 21:16:16,797 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-20 21:16:16,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:16:16,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:16:16,798 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:16:16,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:16:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:16:16,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:16:16,856 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 [2022-11-20 21:16:16,860 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 [2022-11-20 21:16:16,867 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 13 treesize of output 9 [2022-11-20 21:16:16,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:16,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:16,883 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 19 treesize of output 1 [2022-11-20 21:16:16,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:16:16,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:16:16,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:16,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:16,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:16:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:16:16,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:16,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:16:17,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:16:17,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:17,072 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:16:17,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:16:17,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:17,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:17,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:17,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:16:17,165 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:16:17,178 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:16:17,234 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 27 treesize of output 11 [2022-11-20 21:16:17,286 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:17,478 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:16:17,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:16:17,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:16:17,661 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 [2022-11-20 21:16:17,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:16:17,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:17,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:17,709 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:17,710 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:17,767 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:16:17,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:16:17,903 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 [2022-11-20 21:16:17,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:16:17,925 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 19 treesize of output 7 [2022-11-20 21:16:17,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:16:17,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:17,964 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:17,967 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:18,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:18,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:18,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:18,071 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 27 treesize of output 11 [2022-11-20 21:16:18,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:18,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,123 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 27 treesize of output 11 [2022-11-20 21:16:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,134 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 23 treesize of output 22 [2022-11-20 21:16:18,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,153 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 23 treesize of output 22 [2022-11-20 21:16:18,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:18,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:18,269 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 [2022-11-20 21:16:18,284 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 13 treesize of output 9 [2022-11-20 21:16:18,292 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 27 treesize of output 11 [2022-11-20 21:16:18,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,339 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 23 treesize of output 22 [2022-11-20 21:16:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,352 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 23 treesize of output 22 [2022-11-20 21:16:18,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:18,370 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 27 treesize of output 11 [2022-11-20 21:16:18,563 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:18,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:18,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:18,845 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 165 treesize of output 175 [2022-11-20 21:16:18,975 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:18,990 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 7 treesize of output 3 [2022-11-20 21:16:19,005 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 7 treesize of output 3 [2022-11-20 21:16:19,114 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:19,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:19,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:19,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 469 treesize of output 475 [2022-11-20 21:16:20,023 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 7 treesize of output 3 [2022-11-20 21:16:20,036 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 7 treesize of output 3 [2022-11-20 21:16:20,060 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:20,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:16:20,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:16:20,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:16:20,366 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:16:20,366 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 32 [2022-11-20 21:16:20,396 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:16:20,396 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 [2022-11-20 21:16:20,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:16:20,755 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:20,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:20,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:16:20,968 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 [2022-11-20 21:16:21,159 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:21,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:16:21,406 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:21,418 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:21,430 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:21,440 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:21,452 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:21,473 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:16:21,481 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 [2022-11-20 21:16:21,489 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 [2022-11-20 21:16:21,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:21,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:21,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:21,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:21,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:16:21,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:16:21,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:21,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:21,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:21,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:16:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:21,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:21,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:21,589 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:16:34,709 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11104#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:16:34,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:16:34,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:16:34,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 55 [2022-11-20 21:16:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008378752] [2022-11-20 21:16:34,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:16:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 21:16:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:16:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 21:16:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=8267, Unknown=65, NotChecked=0, Total=8742 [2022-11-20 21:16:34,711 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 56 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:16:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:16:36,898 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2022-11-20 21:16:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 21:16:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 56 [2022-11-20 21:16:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:16:36,899 INFO L225 Difference]: With dead ends: 104 [2022-11-20 21:16:36,899 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 21:16:36,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3260 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=576, Invalid=10275, Unknown=69, NotChecked=0, Total=10920 [2022-11-20 21:16:36,900 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 106 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:16:36,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 644 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1011 Invalid, 0 Unknown, 83 Unchecked, 1.1s Time] [2022-11-20 21:16:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 21:16:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-11-20 21:16:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 95 states have internal predecessors, (103), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:16:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2022-11-20 21:16:36,904 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 56 [2022-11-20 21:16:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:16:36,905 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2022-11-20 21:16:36,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:16:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2022-11-20 21:16:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 21:16:36,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:16:36,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 21:16:36,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 21:16:37,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 21:16:37,114 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:16:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:16:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 703895314, now seen corresponding path program 1 times [2022-11-20 21:16:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:16:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649295168] [2022-11-20 21:16:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:16:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:16:43,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:16:43,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649295168] [2022-11-20 21:16:43,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649295168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:16:43,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127038956] [2022-11-20 21:16:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:43,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:16:43,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:16:43,471 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:16:43,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 21:16:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:43,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-20 21:16:43,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:16:43,991 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 [2022-11-20 21:16:44,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:44,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 21:16:44,735 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 [2022-11-20 21:16:44,739 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 7 treesize of output 3 [2022-11-20 21:16:45,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:16:45,342 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 [2022-11-20 21:16:45,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:16:45,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:16:45,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:45,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 21:16:45,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:46,062 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:16:46,063 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 82 [2022-11-20 21:16:46,069 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 22 treesize of output 24 [2022-11-20 21:16:46,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2022-11-20 21:16:46,664 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:46,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 39 [2022-11-20 21:16:46,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-11-20 21:16:46,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:46,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 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 [2022-11-20 21:16:46,687 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 7 treesize of output 3 [2022-11-20 21:16:47,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:47,540 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:16:47,541 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 92 treesize of output 74 [2022-11-20 21:16:47,575 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:16:47,575 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 28 treesize of output 30 [2022-11-20 21:16:47,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 21:16:47,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:47,607 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:16:47,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 21:16:49,309 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:16:49,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 163 [2022-11-20 21:16:49,376 INFO L321 Elim1Store]: treesize reduction 128, result has 19.0 percent of original size [2022-11-20 21:16:49,376 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 99 [2022-11-20 21:16:49,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:49,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:49,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2022-11-20 21:16:49,403 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 7 treesize of output 3 [2022-11-20 21:16:49,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:49,631 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:16:49,631 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 72 [2022-11-20 21:16:49,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 21:16:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:49,658 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:16:49,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 21:16:50,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:50,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:50,361 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:50,361 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 98 treesize of output 50 [2022-11-20 21:16:50,393 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-11-20 21:16:50,394 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2022-11-20 21:16:50,534 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 15 treesize of output 7 [2022-11-20 21:16:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:16:50,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:16:51,089 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5165 (Array Int Int)) (v_ArrVal_5164 (Array Int Int)) (v_ArrVal_5163 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5165))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5163))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5164) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2))))) (not (<= 0 .cse4)))))) is different from false [2022-11-20 21:16:51,108 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5165 (Array Int Int)) (v_ArrVal_5162 Int) (v_ArrVal_5164 (Array Int Int)) (v_ArrVal_5160 Int) (v_ArrVal_5159 (Array Int Int)) (v_ArrVal_5163 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse1 v_ArrVal_5160)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5165))) (let ((.cse0 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse0)) (= (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_5159) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5163))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse1 v_ArrVal_5162)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5164) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4)))) |c_ULTIMATE.start_main_~data~0#1|)))))) is different from false [2022-11-20 21:16:53,084 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5165 (Array Int Int)) (v_ArrVal_5162 Int) (v_ArrVal_5164 (Array Int Int)) (v_ArrVal_5178 (Array Int Int)) (v_ArrVal_5160 Int) (v_ArrVal_5179 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_72| Int) (v_ArrVal_5159 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| Int) (v_ArrVal_5180 (Array Int Int)) (v_ArrVal_5163 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5179)) (.cse8 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5178))) (let ((.cse10 (select (select .cse8 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (.cse11 (+ 4 (select (select .cse9 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)))) (let ((.cse1 (select (select .cse8 .cse10) .cse11)) (.cse2 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_72| 4))) (let ((.cse6 (store (store .cse9 .cse1 (store (select .cse9 .cse1) .cse2 v_ArrVal_5160)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5165))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse3 (store (store .cse8 .cse1 v_ArrVal_5159) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5163))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ 4 .cse7))) (select (select (store (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5180))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_5162))) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| v_ArrVal_5164) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))) (not (<= (select (select .cse9 .cse10) .cse11) |v_ULTIMATE.start_dll_append_~last~0#1.offset_72|)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74| |c_#StackHeapBarrier|)) (not (<= 0 .cse7)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_74|) 0)) (not (= (select (select .cse8 .cse1) .cse2) 0))))))))) is different from false [2022-11-20 21:16:53,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127038956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:16:53,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [377666989] [2022-11-20 21:16:53,090 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-20 21:16:53,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:16:53,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:16:53,090 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:16:53,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:16:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:16:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:16:53,156 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 [2022-11-20 21:16:53,160 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 [2022-11-20 21:16:53,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:53,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:53,178 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 [2022-11-20 21:16:53,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:16:53,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:53,196 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 23 treesize of output 22 [2022-11-20 21:16:53,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:53,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:16:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:16:53,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:16:53,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:53,373 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:16:53,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:53,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:53,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:16:53,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:53,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:53,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:53,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:16:53,479 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:16:53,492 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:16:53,527 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 27 treesize of output 11 [2022-11-20 21:16:53,573 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:53,753 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:16:53,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:16:53,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:53,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:16:53,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:16:53,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:53,993 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 [2022-11-20 21:16:54,005 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,008 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,010 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,068 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:16:54,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:16:54,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:54,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:16:54,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:16:54,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:16:54,297 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 [2022-11-20 21:16:54,309 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,312 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,313 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:54,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,398 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 27 treesize of output 11 [2022-11-20 21:16:54,407 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 13 treesize of output 9 [2022-11-20 21:16:54,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,453 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 23 treesize of output 22 [2022-11-20 21:16:54,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:16:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,483 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 23 treesize of output 22 [2022-11-20 21:16:54,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:54,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:54,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:54,624 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 27 treesize of output 11 [2022-11-20 21:16:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,653 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 23 treesize of output 22 [2022-11-20 21:16:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,667 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 23 treesize of output 22 [2022-11-20 21:16:54,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:54,680 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 27 treesize of output 11 [2022-11-20 21:16:54,859 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:54,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:55,026 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 5 treesize of output 3 [2022-11-20 21:16:55,039 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:55,051 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:55,089 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:55,167 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 7 treesize of output 3 [2022-11-20 21:16:55,184 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:55,201 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 7 treesize of output 3 [2022-11-20 21:16:55,312 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:55,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:55,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:55,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 419 treesize of output 429 [2022-11-20 21:16:56,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:16:56,444 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:56,463 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 7 treesize of output 3 [2022-11-20 21:16:56,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:16:56,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:16:56,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:16:56,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:16:56,801 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:16:56,801 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 32 [2022-11-20 21:16:56,830 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:16:56,831 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 [2022-11-20 21:16:57,122 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:57,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:16:57,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:16:57,329 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 128 treesize of output 138 [2022-11-20 21:16:57,512 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:16:57,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:16:57,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:16:57,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:57,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:16:57,772 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:16:57,797 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:57,809 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:57,821 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:16:57,850 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:16:57,860 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 [2022-11-20 21:16:57,866 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 [2022-11-20 21:16:57,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:16:57,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:16:57,892 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 13 treesize of output 9 [2022-11-20 21:16:57,905 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 23 treesize of output 22 [2022-11-20 21:16:57,912 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 23 treesize of output 22 [2022-11-20 21:16:57,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:16:57,937 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 11 treesize of output 7 [2022-11-20 21:16:57,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:57,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:57,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:16:57,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:16:57,964 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:17:12,580 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11677#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|)) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2022-11-20 21:17:12,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:17:12,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:17:12,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 70 [2022-11-20 21:17:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582550723] [2022-11-20 21:17:12,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:17:12,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 21:17:12,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:17:12,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 21:17:12,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=10754, Unknown=9, NotChecked=630, Total=11772 [2022-11-20 21:17:12,582 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 70 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 58 states have internal predecessors, (101), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:17:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:17:21,100 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2022-11-20 21:17:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 21:17:21,100 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 58 states have internal predecessors, (101), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 57 [2022-11-20 21:17:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:17:21,101 INFO L225 Difference]: With dead ends: 107 [2022-11-20 21:17:21,101 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 21:17:21,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 132 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4139 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=699, Invalid=16334, Unknown=9, NotChecked=780, Total=17822 [2022-11-20 21:17:21,103 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 129 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:17:21,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 926 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2278 Invalid, 0 Unknown, 243 Unchecked, 2.6s Time] [2022-11-20 21:17:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 21:17:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2022-11-20 21:17:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 98 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:17:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-11-20 21:17:21,107 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 57 [2022-11-20 21:17:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:17:21,107 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-11-20 21:17:21,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 58 states have internal predecessors, (101), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:17:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-11-20 21:17:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 21:17:21,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:17:21,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:17:21,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 21:17:21,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 21:17:21,320 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:17:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:17:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2133631289, now seen corresponding path program 2 times [2022-11-20 21:17:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:17:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558193386] [2022-11-20 21:17:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:17:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:17:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:17:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:17:25,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:17:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558193386] [2022-11-20 21:17:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558193386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:17:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064999380] [2022-11-20 21:17:25,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:17:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:17:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:17:25,424 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:17:25,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 21:17:26,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:17:26,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:17:26,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-20 21:17:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:17:26,489 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 [2022-11-20 21:17:26,574 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 [2022-11-20 21:17:26,753 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:17:26,754 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 [2022-11-20 21:17:27,371 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:17:27,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2022-11-20 21:17:27,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-20 21:17:27,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:17:27,934 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:17:27,934 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 70 [2022-11-20 21:17:27,948 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2022-11-20 21:17:28,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:28,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 40 [2022-11-20 21:17:28,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:28,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 21:17:28,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:29,006 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:17:29,006 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 87 treesize of output 73 [2022-11-20 21:17:29,035 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:17:29,036 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 28 treesize of output 30 [2022-11-20 21:17:29,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:29,051 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:17:29,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-20 21:17:30,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:17:30,435 INFO L321 Elim1Store]: treesize reduction 139, result has 14.7 percent of original size [2022-11-20 21:17:30,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 210 treesize of output 108 [2022-11-20 21:17:30,481 INFO L321 Elim1Store]: treesize reduction 128, result has 14.7 percent of original size [2022-11-20 21:17:30,481 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 108 [2022-11-20 21:17:30,711 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-11-20 21:17:30,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 217 treesize of output 152 [2022-11-20 21:17:30,744 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-11-20 21:17:30,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 148 [2022-11-20 21:17:31,516 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-20 21:17:31,517 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 182 treesize of output 120 [2022-11-20 21:17:32,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:17:32,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:17:32,059 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-20 21:17:32,059 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 43 [2022-11-20 21:17:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:17:32,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:17:32,896 INFO L321 Elim1Store]: treesize reduction 5, result has 87.5 percent of original size [2022-11-20 21:17:32,897 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 44 treesize of output 43 [2022-11-20 21:17:32,912 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_46| Int) (v_ArrVal_5408 (Array Int Int)) (v_ArrVal_5407 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5408))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5407))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse3 4))) (or (= |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_46| 4))) (not (<= 0 .cse3)) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_46| (select (select .cse4 .cse1) .cse2))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_46|))))))) is different from false [2022-11-20 21:17:32,943 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_46| Int) (v_ArrVal_5405 Int) (v_ArrVal_5408 (Array Int Int)) (v_ArrVal_5407 (Array Int Int))) (let ((.cse5 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse5 v_ArrVal_5405)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5408))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5407))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ .cse0 4))) (or (not (<= 0 .cse0)) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_46|)) (= (select (select .cse1 (select (select .cse1 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_46| 4)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_46| (select (select .cse4 .cse2) .cse3))))))))) is different from false [2022-11-20 21:17:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064999380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:17:35,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698427592] [2022-11-20 21:17:35,154 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:17:35,155 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:17:35,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:17:35,155 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:17:35,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:17:35,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:17:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:17:35,214 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 [2022-11-20 21:17:35,218 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 [2022-11-20 21:17:35,223 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 13 treesize of output 9 [2022-11-20 21:17:35,228 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 13 treesize of output 9 [2022-11-20 21:17:35,233 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 19 treesize of output 1 [2022-11-20 21:17:35,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:35,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:17:35,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:17:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:17:35,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:17:35,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:17:35,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:17:35,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:17:35,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:17:35,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:17:35,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:17:35,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:17:35,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:17:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:17:35,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:17:35,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:17:35,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:17:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,529 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:17:35,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:17:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:17:35,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:17:35,583 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 [2022-11-20 21:17:35,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:17:35,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:17:35,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,629 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:17:35,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:17:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:17:35,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:17:35,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:17:35,690 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 [2022-11-20 21:17:35,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:17:35,749 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 [2022-11-20 21:17:35,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:35,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:35,788 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 27 treesize of output 11 [2022-11-20 21:17:35,797 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 13 treesize of output 9 [2022-11-20 21:17:35,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:17:35,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,843 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 23 treesize of output 22 [2022-11-20 21:17:35,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,855 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 27 treesize of output 11 [2022-11-20 21:17:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:35,869 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 23 treesize of output 22 [2022-11-20 21:17:35,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:35,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:35,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:17:35,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:17:36,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:17:36,018 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 27 treesize of output 11 [2022-11-20 21:17:36,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:36,047 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 23 treesize of output 22 [2022-11-20 21:17:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:36,060 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 27 treesize of output 11 [2022-11-20 21:17:36,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:36,079 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 23 treesize of output 22 [2022-11-20 21:17:36,258 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:17:36,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:17:36,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:36,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 362 [2022-11-20 21:17:36,961 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 7 treesize of output 3 [2022-11-20 21:17:36,983 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:36,994 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 7 treesize of output 3 [2022-11-20 21:17:37,123 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:17:37,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:17:37,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:37,453 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 165 treesize of output 175 [2022-11-20 21:17:37,546 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 7 treesize of output 3 [2022-11-20 21:17:37,564 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:37,583 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 7 treesize of output 3 [2022-11-20 21:17:37,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:17:37,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:17:37,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:17:37,806 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:17:37,806 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 32 [2022-11-20 21:17:37,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:17:37,851 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:17:37,851 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 [2022-11-20 21:17:38,134 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:17:38,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:17:38,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:38,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 343 treesize of output 353 [2022-11-20 21:17:38,973 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:17:38,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:17:39,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:17:39,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:39,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:17:39,226 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 1 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 21:17:39,237 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:39,245 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:39,275 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:39,280 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:39,295 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:17:39,331 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:17:39,341 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 [2022-11-20 21:17:39,345 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 [2022-11-20 21:17:39,360 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 13 treesize of output 9 [2022-11-20 21:17:39,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:17:39,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:39,385 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 19 treesize of output 1 [2022-11-20 21:17:39,390 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 23 treesize of output 22 [2022-11-20 21:17:39,399 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 23 treesize of output 22 [2022-11-20 21:17:39,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:39,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:17:39,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:39,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:17:39,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:17:39,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:17:39,438 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:17:52,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12288#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:17:52,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:17:52,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:17:52,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33] total 59 [2022-11-20 21:17:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478401952] [2022-11-20 21:17:52,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:17:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 21:17:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:17:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 21:17:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=9573, Unknown=3, NotChecked=394, Total=10302 [2022-11-20 21:17:52,774 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 61 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 52 states have internal predecessors, (99), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:17:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:17:57,922 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2022-11-20 21:17:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 21:17:57,922 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 52 states have internal predecessors, (99), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2022-11-20 21:17:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:17:57,923 INFO L225 Difference]: With dead ends: 139 [2022-11-20 21:17:57,923 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 21:17:57,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3096 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=491, Invalid=13084, Unknown=5, NotChecked=462, Total=14042 [2022-11-20 21:17:57,924 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 71 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:17:57,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1052 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1929 Invalid, 0 Unknown, 216 Unchecked, 2.0s Time] [2022-11-20 21:17:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 21:17:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2022-11-20 21:17:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.22) internal successors, (122), 112 states have internal predecessors, (122), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:17:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2022-11-20 21:17:57,931 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 59 [2022-11-20 21:17:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:17:57,932 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2022-11-20 21:17:57,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 52 states have internal predecessors, (99), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:17:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2022-11-20 21:17:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 21:17:57,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:17:57,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:17:57,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-20 21:17:58,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:17:58,142 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:17:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:17:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2133631290, now seen corresponding path program 2 times [2022-11-20 21:17:58,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:17:58,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70942370] [2022-11-20 21:17:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:17:58,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:17:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:18:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:18:03,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:18:03,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70942370] [2022-11-20 21:18:03,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70942370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:18:03,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876914283] [2022-11-20 21:18:03,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:18:03,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:18:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:18:03,678 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:18:03,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 21:18:04,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:18:04,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:18:04,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-20 21:18:04,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:18:05,234 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 [2022-11-20 21:18:05,449 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:18:05,449 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 [2022-11-20 21:18:05,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:05,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:05,984 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:18:05,985 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 54 [2022-11-20 21:18:05,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 24 [2022-11-20 21:18:06,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:18:06,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 34 [2022-11-20 21:18:06,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:18:06,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 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 [2022-11-20 21:18:06,479 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 11 treesize of output 7 [2022-11-20 21:18:06,498 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 [2022-11-20 21:18:07,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:07,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:07,085 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:18:07,085 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 1 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 21:18:07,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:07,107 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:18:07,107 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 77 treesize of output 65 [2022-11-20 21:18:07,134 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:18:07,134 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 28 treesize of output 30 [2022-11-20 21:18:08,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:08,748 INFO L321 Elim1Store]: treesize reduction 135, result has 17.2 percent of original size [2022-11-20 21:18:08,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 200 treesize of output 106 [2022-11-20 21:18:08,796 INFO L321 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2022-11-20 21:18:08,796 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 85 [2022-11-20 21:18:09,081 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-11-20 21:18:09,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 178 [2022-11-20 21:18:09,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:09,123 INFO L321 Elim1Store]: treesize reduction 110, result has 20.3 percent of original size [2022-11-20 21:18:09,123 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 215 treesize of output 174 [2022-11-20 21:18:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:10,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:10,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:10,551 INFO L321 Elim1Store]: treesize reduction 77, result has 12.5 percent of original size [2022-11-20 21:18:10,551 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 114 [2022-11-20 21:18:10,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:10,580 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-20 21:18:10,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 35 [2022-11-20 21:18:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:18:10,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:18:12,041 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5645 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5645))) (let ((.cse6 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_53| Int) (v_ArrVal_5644 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5644))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse6 4))) (or (let ((.cse1 (select (select .cse3 .cse4) .cse5)) (.cse2 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_53| 4))) (<= (+ (select (select .cse0 .cse1) .cse2) 4) (select |c_#length| (select (select .cse3 .cse1) .cse2)))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_53|)) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_53| (select (select .cse0 .cse4) .cse5))))))) (not (<= 0 .cse6)))))) (forall ((v_ArrVal_5645 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5645))) (let ((.cse11 (select (select .cse7 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_53| Int) (v_ArrVal_5644 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5644))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse10 (+ .cse11 4))) (or (<= 0 (select (select .cse7 (select (select .cse8 .cse9) .cse10)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_53| 4))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_53|)) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_53| (select (select .cse7 .cse9) .cse10))))))) (not (<= 0 .cse11))))))) is different from false [2022-11-20 21:18:16,398 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 3023 treesize of output 2649 [2022-11-20 21:18:20,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876914283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:18:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [319581665] [2022-11-20 21:18:20,742 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:18:20,742 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:18:20,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:18:20,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:18:20,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:18:20,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:18:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:18:20,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 21:18:20,800 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 [2022-11-20 21:18:20,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:20,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:20,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:20,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:20,839 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 23 treesize of output 22 [2022-11-20 21:18:20,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:18:20,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:18:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:18:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:18:20,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:18:20,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:20,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:18:21,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:21,043 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:18:21,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:21,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:21,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:21,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:21,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:18:21,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:21,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:21,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:18:21,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:18:21,170 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:18:21,184 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:18:21,225 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 27 treesize of output 11 [2022-11-20 21:18:21,288 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:21,512 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:18:21,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:18:21,719 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 [2022-11-20 21:18:21,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:18:21,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:18:21,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:18:21,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:18:21,778 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:21,779 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:21,850 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:18:21,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:18:22,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:18:22,105 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 [2022-11-20 21:18:22,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:18:22,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:18:22,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:18:22,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:22,151 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:22,153 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:22,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:22,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:18:22,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:18:22,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:22,262 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 27 treesize of output 11 [2022-11-20 21:18:22,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:22,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,311 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 23 treesize of output 22 [2022-11-20 21:18:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,325 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 27 treesize of output 11 [2022-11-20 21:18:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,344 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 23 treesize of output 22 [2022-11-20 21:18:22,422 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 [2022-11-20 21:18:22,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:22,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:18:22,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:22,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:22,485 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 27 treesize of output 11 [2022-11-20 21:18:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,532 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 23 treesize of output 22 [2022-11-20 21:18:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,545 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 23 treesize of output 22 [2022-11-20 21:18:22,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:22,560 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 27 treesize of output 11 [2022-11-20 21:18:22,774 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:18:22,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:18:23,127 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:18:23,127 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 208 treesize of output 218 [2022-11-20 21:18:23,224 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 7 treesize of output 3 [2022-11-20 21:18:23,243 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:23,256 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 7 treesize of output 3 [2022-11-20 21:18:23,367 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:18:23,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:18:23,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:18:23,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 442 treesize of output 444 [2022-11-20 21:18:24,476 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:24,489 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 7 treesize of output 3 [2022-11-20 21:18:24,499 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 7 treesize of output 3 [2022-11-20 21:18:24,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:18:24,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:18:24,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:18:24,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:18:24,824 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:18:24,825 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 [2022-11-20 21:18:24,862 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:18:24,862 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 32 [2022-11-20 21:18:25,136 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:18:25,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:18:25,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:18:25,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 255 treesize of output 269 [2022-11-20 21:18:25,966 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:18:25,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:18:26,229 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 21:18:26,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 68 [2022-11-20 21:18:26,250 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:26,257 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:26,273 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:26,283 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:18:26,301 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 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 21:18:26,324 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:18:26,332 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 [2022-11-20 21:18:26,338 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 [2022-11-20 21:18:26,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:26,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:18:26,364 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 19 treesize of output 1 [2022-11-20 21:18:26,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:18:26,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:18:26,391 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 [2022-11-20 21:18:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:26,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:18:26,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:18:26,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:18:26,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:18:26,429 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:18:41,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12937#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:18:41,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:18:41,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:18:41,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2022-11-20 21:18:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921028610] [2022-11-20 21:18:41,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:18:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-20 21:18:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:18:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-20 21:18:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=11178, Unknown=26, NotChecked=212, Total=11772 [2022-11-20 21:18:41,971 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 67 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 58 states have internal predecessors, (106), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:18:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:18:53,319 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2022-11-20 21:18:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 21:18:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 58 states have internal predecessors, (106), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2022-11-20 21:18:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:18:53,321 INFO L225 Difference]: With dead ends: 151 [2022-11-20 21:18:53,321 INFO L226 Difference]: Without dead ends: 151 [2022-11-20 21:18:53,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 145 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5519 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=755, Invalid=20392, Unknown=27, NotChecked=288, Total=21462 [2022-11-20 21:18:53,323 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 198 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:18:53,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1188 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2290 Invalid, 0 Unknown, 238 Unchecked, 2.6s Time] [2022-11-20 21:18:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-20 21:18:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2022-11-20 21:18:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 114 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:18:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2022-11-20 21:18:53,327 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 59 [2022-11-20 21:18:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:18:53,327 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2022-11-20 21:18:53,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 58 states have internal predecessors, (106), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:18:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2022-11-20 21:18:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 21:18:53,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:18:53,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:18:53,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 21:18:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 21:18:53,537 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:18:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:18:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1718149568, now seen corresponding path program 2 times [2022-11-20 21:18:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:18:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812898278] [2022-11-20 21:18:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:18:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:18:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:18:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:18:58,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:18:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812898278] [2022-11-20 21:18:58,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812898278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:18:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468642145] [2022-11-20 21:18:58,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:18:59,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:18:59,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:18:59,000 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:18:59,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 21:19:00,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:19:00,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:19:00,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 144 conjunts are in the unsatisfiable core [2022-11-20 21:19:00,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:19:00,641 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 [2022-11-20 21:19:00,920 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:19:00,921 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 [2022-11-20 21:19:01,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:01,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:01,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 46 [2022-11-20 21:19:01,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2022-11-20 21:19:02,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:02,051 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:19:02,051 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 134 treesize of output 59 [2022-11-20 21:19:02,062 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:19:02,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-11-20 21:19:02,067 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 11 treesize of output 7 [2022-11-20 21:19:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:02,738 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 21:19:02,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 142 treesize of output 126 [2022-11-20 21:19:02,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:02,754 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:19:02,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 124 [2022-11-20 21:19:02,781 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2022-11-20 21:19:02,781 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 34 treesize of output 36 [2022-11-20 21:19:04,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:04,499 INFO L321 Elim1Store]: treesize reduction 150, result has 15.7 percent of original size [2022-11-20 21:19:04,499 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 8 new quantified variables, introduced 9 case distinctions, treesize of input 259 treesize of output 130 [2022-11-20 21:19:04,533 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-20 21:19:04,534 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 129 [2022-11-20 21:19:04,783 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-11-20 21:19:04,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 126 [2022-11-20 21:19:04,812 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-11-20 21:19:04,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 195 [2022-11-20 21:19:05,597 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 21:19:05,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 154 [2022-11-20 21:19:06,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:06,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:06,093 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-20 21:19:06,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 135 treesize of output 46 [2022-11-20 21:19:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:19:06,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:19:06,939 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_59| Int) (v_ArrVal_5884 (Array Int Int)) (v_ArrVal_5885 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5885))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5884))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ .cse0 4))) (or (not (<= 0 .cse0)) (not (= (select (select .cse1 (select (select .cse1 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_59| 4)) 0)) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_59| (select (select .cse4 .cse2) .cse3))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_59|))))))) is different from false [2022-11-20 21:19:06,968 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~ptr~0#1.offset_59| Int) (v_ArrVal_5884 (Array Int Int)) (v_ArrVal_5885 (Array Int Int)) (v_ArrVal_5881 Int)) (let ((.cse5 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse5 v_ArrVal_5881)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5885))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_5884))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (or (not (= (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_59| 4)) 0)) (not (<= |v_ULTIMATE.start_main_~ptr~0#1.offset_59| (select (select .cse3 .cse1) .cse2))) (not (<= 0 .cse4)) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_59|)))))))) is different from false [2022-11-20 21:19:09,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468642145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:19:09,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [637028610] [2022-11-20 21:19:09,820 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-20 21:19:09,820 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:19:09,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:19:09,820 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:19:09,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:19:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:19:09,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:19:09,877 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 [2022-11-20 21:19:09,882 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 [2022-11-20 21:19:09,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:09,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:09,898 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 [2022-11-20 21:19:09,905 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 23 treesize of output 22 [2022-11-20 21:19:09,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:09,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:19:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:19:09,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:19:09,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:19:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:19:09,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:09,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:19:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:19:10,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:10,103 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:19:10,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:10,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:19:10,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:10,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:10,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:10,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:19:10,188 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 27 treesize of output 11 [2022-11-20 21:19:10,199 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:19:10,213 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:19:10,283 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:10,488 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:19:10,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:19:10,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:19:10,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:19:10,718 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 19 treesize of output 7 [2022-11-20 21:19:10,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:19:10,743 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 [2022-11-20 21:19:10,758 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:10,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:10,828 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:19:10,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:19:11,013 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 [2022-11-20 21:19:11,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:19:11,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:19:11,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:19:11,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:19:11,076 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:11,079 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:11,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:11,147 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 [2022-11-20 21:19:11,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:11,180 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 13 treesize of output 9 [2022-11-20 21:19:11,208 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 27 treesize of output 11 [2022-11-20 21:19:11,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,257 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 23 treesize of output 22 [2022-11-20 21:19:11,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,269 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 23 treesize of output 22 [2022-11-20 21:19:11,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,281 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 27 treesize of output 11 [2022-11-20 21:19:11,387 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 [2022-11-20 21:19:11,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:19:11,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:11,433 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 27 treesize of output 11 [2022-11-20 21:19:11,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:11,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,501 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 23 treesize of output 22 [2022-11-20 21:19:11,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,516 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 23 treesize of output 22 [2022-11-20 21:19:11,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:11,533 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 27 treesize of output 11 [2022-11-20 21:19:11,774 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:19:11,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:19:12,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:12,090 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 205 treesize of output 215 [2022-11-20 21:19:12,203 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 7 treesize of output 3 [2022-11-20 21:19:12,243 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:12,260 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 7 treesize of output 3 [2022-11-20 21:19:12,378 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:19:12,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:19:12,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:12,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 419 treesize of output 429 [2022-11-20 21:19:13,495 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 7 treesize of output 3 [2022-11-20 21:19:13,511 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 7 treesize of output 3 [2022-11-20 21:19:13,534 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:13,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:19:13,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:19:13,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:19:13,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:19:13,802 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:19:13,802 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 32 [2022-11-20 21:19:13,837 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:19:13,837 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 [2022-11-20 21:19:14,165 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:19:14,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:19:14,313 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 [2022-11-20 21:19:14,321 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:14,488 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:19:14,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:19:14,754 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:14,762 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:19:14,805 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:19:14,812 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 9 [2022-11-20 21:19:14,818 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 [2022-11-20 21:19:14,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:14,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:19:14,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:14,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:19:14,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:19:14,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:14,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:19:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:14,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:19:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:14,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:19:14,914 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:19:29,155 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13650#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:19:29,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:19:29,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:19:29,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2022-11-20 21:19:29,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222240512] [2022-11-20 21:19:29,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:19:29,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-20 21:19:29,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:19:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-20 21:19:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=11165, Unknown=7, NotChecked=426, Total=11990 [2022-11-20 21:19:29,158 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 68 states, 60 states have (on average 1.75) internal successors, (105), 57 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:19:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:19:36,597 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2022-11-20 21:19:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 21:19:36,597 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 60 states have (on average 1.75) internal successors, (105), 57 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 60 [2022-11-20 21:19:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:19:36,598 INFO L225 Difference]: With dead ends: 122 [2022-11-20 21:19:36,598 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 21:19:36,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 129 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=645, Invalid=15868, Unknown=7, NotChecked=510, Total=17030 [2022-11-20 21:19:36,600 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 98 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:19:36,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1059 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1887 Invalid, 0 Unknown, 127 Unchecked, 2.2s Time] [2022-11-20 21:19:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 21:19:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-11-20 21:19:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 113 states have internal predecessors, (122), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 21:19:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2022-11-20 21:19:36,604 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 60 [2022-11-20 21:19:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:19:36,604 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2022-11-20 21:19:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 60 states have (on average 1.75) internal successors, (105), 57 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:19:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2022-11-20 21:19:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 21:19:36,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:19:36,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:19:36,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 21:19:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 21:19:36,813 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:19:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:19:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 162958995, now seen corresponding path program 3 times [2022-11-20 21:19:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:19:36,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013307260] [2022-11-20 21:19:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:19:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:19:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:19:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 21:19:36,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:19:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013307260] [2022-11-20 21:19:36,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013307260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:19:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817044488] [2022-11-20 21:19:36,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:19:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:19:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:19:36,944 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:19:36,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 21:19:37,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:19:37,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:19:37,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:19:37,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:19:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 21:19:37,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:19:37,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817044488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:19:37,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:19:37,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-11-20 21:19:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885012076] [2022-11-20 21:19:37,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:19:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:19:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:19:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:19:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:19:37,761 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:19:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:19:37,804 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-11-20 21:19:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:19:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 61 [2022-11-20 21:19:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:19:37,805 INFO L225 Difference]: With dead ends: 78 [2022-11-20 21:19:37,805 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 21:19:37,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:19:37,805 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 116 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:19:37,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 64 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:19:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 21:19:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-20 21:19:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:19:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2022-11-20 21:19:37,808 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 61 [2022-11-20 21:19:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:19:37,809 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2022-11-20 21:19:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:19:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2022-11-20 21:19:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 21:19:37,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:19:37,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:19:37,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 21:19:38,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:19:38,010 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:19:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:19:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1720270755, now seen corresponding path program 2 times [2022-11-20 21:19:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:19:38,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846914547] [2022-11-20 21:19:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:19:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:19:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:19:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:19:44,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:19:44,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846914547] [2022-11-20 21:19:44,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846914547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:19:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055051449] [2022-11-20 21:19:44,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:19:44,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:19:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:19:44,255 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:19:44,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 21:19:46,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:19:46,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:19:46,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 162 conjunts are in the unsatisfiable core [2022-11-20 21:19:46,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:19:47,018 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 [2022-11-20 21:19:47,307 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:19:47,307 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 [2022-11-20 21:19:47,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:47,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:19:47,990 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:19:47,990 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 54 [2022-11-20 21:19:48,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-20 21:19:48,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:48,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 41 [2022-11-20 21:19:48,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:48,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 21:19:48,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-11-20 21:19:49,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:19:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:49,403 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 21:19:49,403 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 88 treesize of output 74 [2022-11-20 21:19:49,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:49,431 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-20 21:19:49,431 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 36 treesize of output 43 [2022-11-20 21:19:49,478 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 21:19:49,478 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 28 treesize of output 30 [2022-11-20 21:19:51,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:51,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:51,334 INFO L321 Elim1Store]: treesize reduction 145, result has 11.0 percent of original size [2022-11-20 21:19:51,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 109 [2022-11-20 21:19:51,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 24 [2022-11-20 21:19:51,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:51,383 INFO L321 Elim1Store]: treesize reduction 136, result has 9.9 percent of original size [2022-11-20 21:19:51,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 73 [2022-11-20 21:19:51,693 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-11-20 21:19:51,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 455 treesize of output 334 [2022-11-20 21:19:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:51,743 INFO L321 Elim1Store]: treesize reduction 110, result has 20.3 percent of original size [2022-11-20 21:19:51,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 407 treesize of output 290 [2022-11-20 21:19:51,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 132 [2022-11-20 21:19:53,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:19:53,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:53,266 INFO L321 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2022-11-20 21:19:53,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 364 treesize of output 166 [2022-11-20 21:19:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:19:53,281 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:19:53,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 36 [2022-11-20 21:19:53,434 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 [2022-11-20 21:19:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:19:53,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:19:54,178 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6386 (Array Int Int)) (v_ArrVal_6384 (Array Int Int)) (v_ArrVal_6385 Int)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_6384))) (let ((.cse6 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_6386))) (let ((.cse4 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse6 4))) (let ((.cse1 (select (select .cse0 .cse4) .cse5)) (.cse2 (+ 4 (select (select .cse3 .cse4) .cse5)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |c_ULTIMATE.start_dll_append_~new_last~0#1.offset| 8) v_ArrVal_6385)) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) (not (<= 0 .cse6)))))) is different from false [2022-11-20 21:19:56,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:56,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1385 treesize of output 1378 [2022-11-20 21:19:56,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:56,743 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 23244 treesize of output 21940 [2022-11-20 21:19:56,778 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 26524 treesize of output 21960 [2022-11-20 21:19:56,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:56,944 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 8613 treesize of output 7965 [2022-11-20 21:19:57,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:19:57,107 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 26647 treesize of output 23391 [2022-11-20 21:20:32,742 WARN L233 SmtUtils]: Spent 28.93s on a formula simplification. DAG size of input: 117 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:20:32,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055051449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:20:32,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [476759590] [2022-11-20 21:20:32,747 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-20 21:20:32,747 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:20:32,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:20:32,747 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:20:32,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:20:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:20:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:20:32,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 21:20:32,814 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 [2022-11-20 21:20:32,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:32,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:32,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:32,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:20:32,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:20:32,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:32,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:20:32,869 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 11 treesize of output 7 [2022-11-20 21:20:32,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:20:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:20:32,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:20:32,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:32,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:20:33,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:20:33,032 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:20:33,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:20:33,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:33,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:20:33,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:20:33,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:20:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:33,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:33,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:20:33,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:33,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:20:33,150 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:20:33,165 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:20:33,205 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 27 treesize of output 11 [2022-11-20 21:20:33,272 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:33,451 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:20:33,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:20:33,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:20:33,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:20:33,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:20:33,669 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 [2022-11-20 21:20:33,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:20:33,696 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:33,698 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:33,699 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:33,764 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:20:33,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:20:33,973 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 19 treesize of output 7 [2022-11-20 21:20:34,003 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 [2022-11-20 21:20:34,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:20:34,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:20:34,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:20:34,052 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:34,054 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:34,055 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:34,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:34,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:34,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:34,147 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 13 treesize of output 9 [2022-11-20 21:20:34,157 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 27 treesize of output 11 [2022-11-20 21:20:34,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:34,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,199 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 27 treesize of output 11 [2022-11-20 21:20:34,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:20:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,228 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 23 treesize of output 22 [2022-11-20 21:20:34,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:34,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:20:34,337 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 15 treesize of output 1 [2022-11-20 21:20:34,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:34,369 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 27 treesize of output 11 [2022-11-20 21:20:34,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,417 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 27 treesize of output 11 [2022-11-20 21:20:34,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,430 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 23 treesize of output 22 [2022-11-20 21:20:34,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:34,447 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 23 treesize of output 22 [2022-11-20 21:20:34,635 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:20:34,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:20:34,768 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 [2022-11-20 21:20:34,810 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:34,827 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 7 treesize of output 3 [2022-11-20 21:20:34,841 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 7 treesize of output 3 [2022-11-20 21:20:34,953 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:20:34,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:20:35,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:20:35,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 405 treesize of output 407 [2022-11-20 21:20:35,700 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:35,715 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 7 treesize of output 3 [2022-11-20 21:20:35,729 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 7 treesize of output 3 [2022-11-20 21:20:35,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:20:36,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:20:36,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:20:36,056 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:20:36,056 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 [2022-11-20 21:20:36,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:20:36,104 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:20:36,104 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 32 [2022-11-20 21:20:36,406 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:20:36,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:20:36,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:20:36,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 432 treesize of output 438 [2022-11-20 21:20:37,271 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:20:37,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:20:37,431 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:20:37,464 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:20:37,471 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 12 treesize of output 9 [2022-11-20 21:20:37,476 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 [2022-11-20 21:20:37,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:37,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:37,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:20:37,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:37,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:20:37,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:20:37,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:20:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:37,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:37,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:20:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:37,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:20:37,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:20:37,569 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:20:54,277 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14649#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|)) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2022-11-20 21:20:54,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:20:54,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:20:54,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 72 [2022-11-20 21:20:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413244222] [2022-11-20 21:20:54,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:20:54,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-20 21:20:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-20 21:20:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=11840, Unknown=4, NotChecked=218, Total=12432 [2022-11-20 21:20:54,279 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 72 states, 64 states have (on average 1.703125) internal successors, (109), 61 states have internal predecessors, (109), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:21:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:21:02,861 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2022-11-20 21:21:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 21:21:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 64 states have (on average 1.703125) internal successors, (109), 61 states have internal predecessors, (109), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 61 [2022-11-20 21:21:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:21:02,862 INFO L225 Difference]: With dead ends: 80 [2022-11-20 21:21:02,863 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 21:21:02,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4587 ImplicationChecksByTransitivity, 67.5s TimeCoverageRelationStatistics Valid=603, Invalid=16953, Unknown=4, NotChecked=262, Total=17822 [2022-11-20 21:21:02,864 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 105 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:21:02,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 813 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1855 Invalid, 0 Unknown, 94 Unchecked, 2.2s Time] [2022-11-20 21:21:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 21:21:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-11-20 21:21:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:21:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2022-11-20 21:21:02,868 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 61 [2022-11-20 21:21:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:21:02,868 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2022-11-20 21:21:02,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 64 states have (on average 1.703125) internal successors, (109), 61 states have internal predecessors, (109), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:21:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2022-11-20 21:21:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 21:21:02,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:21:02,869 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:21:02,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 21:21:03,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 21:21:03,075 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:21:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:21:03,076 INFO L85 PathProgramCache]: Analyzing trace with hash -382113398, now seen corresponding path program 3 times [2022-11-20 21:21:03,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:21:03,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859861581] [2022-11-20 21:21:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:03,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:21:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:21:11,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:11,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859861581] [2022-11-20 21:21:11,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859861581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:21:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631436253] [2022-11-20 21:21:11,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:21:11,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:21:11,424 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:21:11,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 21:21:12,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:21:12,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:21:12,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-20 21:21:12,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:21:12,776 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 [2022-11-20 21:21:12,889 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 [2022-11-20 21:21:13,338 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:21:13,338 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 [2022-11-20 21:21:13,899 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:21:13,899 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 [2022-11-20 21:21:14,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:21:14,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:21:14,596 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 21:21:14,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2022-11-20 21:21:14,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-20 21:21:15,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:15,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:15,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 48 [2022-11-20 21:21:15,225 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:21:15,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 18 [2022-11-20 21:21:16,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:16,171 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 21:21:16,171 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 108 [2022-11-20 21:21:16,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:16,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:16,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:16,210 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-20 21:21:16,210 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 93 [2022-11-20 21:21:16,268 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2022-11-20 21:21:16,268 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 34 treesize of output 36 [2022-11-20 21:21:17,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:17,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,895 INFO L321 Elim1Store]: treesize reduction 104, result has 22.4 percent of original size [2022-11-20 21:21:17,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 126 [2022-11-20 21:21:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,942 INFO L321 Elim1Store]: treesize reduction 106, result has 20.9 percent of original size [2022-11-20 21:21:17,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 208 treesize of output 138 [2022-11-20 21:21:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:18,329 INFO L321 Elim1Store]: treesize reduction 178, result has 16.4 percent of original size [2022-11-20 21:21:18,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 644 treesize of output 246 [2022-11-20 21:21:18,391 INFO L321 Elim1Store]: treesize reduction 184, result has 15.2 percent of original size [2022-11-20 21:21:18,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 543 treesize of output 227 [2022-11-20 21:21:30,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:30,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:30,861 INFO L321 Elim1Store]: treesize reduction 238, result has 5.6 percent of original size [2022-11-20 21:21:30,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 16 new quantified variables, introduced 21 case distinctions, treesize of input 536 treesize of output 226 [2022-11-20 21:21:30,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:30,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:30,907 INFO L321 Elim1Store]: treesize reduction 29, result has 25.6 percent of original size [2022-11-20 21:21:30,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 125 treesize of output 59 [2022-11-20 21:21:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 30 refuted. 2 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:21:30,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:21:41,229 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:22:14,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631436253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:22:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735696439] [2022-11-20 21:22:14,220 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-20 21:22:14,220 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:22:14,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:22:14,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:22:14,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:22:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:22:14,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:22:14,277 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 [2022-11-20 21:22:14,281 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 [2022-11-20 21:22:14,288 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 13 treesize of output 9 [2022-11-20 21:22:14,298 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 13 treesize of output 9 [2022-11-20 21:22:14,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:14,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:22:14,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:22:14,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:22:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:22:14,360 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 [2022-11-20 21:22:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:22:14,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:22:14,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:22:14,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:14,535 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:22:14,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:14,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:14,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:22:14,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:14,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:14,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:22:14,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:22:14,665 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:22:14,682 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:22:14,785 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:14,971 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:22:14,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:22:15,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:22:15,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:22:15,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:22:15,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:22:15,262 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 [2022-11-20 21:22:15,278 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,281 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,283 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,370 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:22:15,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:22:15,602 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 19 treesize of output 7 [2022-11-20 21:22:15,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:22:15,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:22:15,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:22:15,650 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 [2022-11-20 21:22:15,664 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,666 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,668 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:15,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:15,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:15,756 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 [2022-11-20 21:22:15,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:15,786 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 27 treesize of output 11 [2022-11-20 21:22:15,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:15,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:15,831 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 23 treesize of output 22 [2022-11-20 21:22:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:15,846 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 23 treesize of output 22 [2022-11-20 21:22:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:15,871 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 27 treesize of output 11 [2022-11-20 21:22:15,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:15,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:15,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:22:16,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:16,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:16,037 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 27 treesize of output 11 [2022-11-20 21:22:16,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:16,072 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 23 treesize of output 22 [2022-11-20 21:22:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:16,088 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 27 treesize of output 11 [2022-11-20 21:22:16,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:16,104 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 23 treesize of output 22 [2022-11-20 21:22:16,321 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:22:16,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:22:16,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:16,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 381 treesize of output 391 [2022-11-20 21:22:17,164 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 7 treesize of output 3 [2022-11-20 21:22:17,187 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:17,203 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 7 treesize of output 3 [2022-11-20 21:22:17,333 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:22:17,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:22:17,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:17,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 352 [2022-11-20 21:22:18,054 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 7 treesize of output 3 [2022-11-20 21:22:18,071 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:18,087 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 7 treesize of output 3 [2022-11-20 21:22:18,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:22:18,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:22:18,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:22:18,339 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:22:18,339 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 [2022-11-20 21:22:18,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:22:18,395 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:22:18,395 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 32 [2022-11-20 21:22:18,716 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:22:18,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:22:19,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:19,083 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 205 treesize of output 215 [2022-11-20 21:22:19,299 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:22:19,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:22:19,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:22:19,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 21:22:19,566 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:22:19,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:19,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:19,582 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-11-20 21:22:19,609 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 21:22:19,609 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 57 treesize of output 51 [2022-11-20 21:22:19,629 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:22:19,639 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 [2022-11-20 21:22:19,644 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 [2022-11-20 21:22:19,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:19,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:19,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:22:19,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:22:19,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:22:19,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:22:19,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:22:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:19,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:22:19,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:19,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:19,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:22:19,759 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:22:42,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15231#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:22:42,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:22:42,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:22:42,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 33] total 69 [2022-11-20 21:22:42,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377581707] [2022-11-20 21:22:42,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 21:22:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 21:22:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:22:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 21:22:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=11625, Unknown=7, NotChecked=0, Total=11990 [2022-11-20 21:22:42,870 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 70 states, 62 states have (on average 1.7741935483870968) internal successors, (110), 59 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:23:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:01,726 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2022-11-20 21:23:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 21:23:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 62 states have (on average 1.7741935483870968) internal successors, (110), 59 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 63 [2022-11-20 21:23:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:01,728 INFO L225 Difference]: With dead ends: 72 [2022-11-20 21:23:01,728 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 21:23:01,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4308 ImplicationChecksByTransitivity, 99.7s TimeCoverageRelationStatistics Valid=559, Invalid=16726, Unknown=7, NotChecked=0, Total=17292 [2022-11-20 21:23:01,730 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:01,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 731 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1429 Invalid, 0 Unknown, 89 Unchecked, 2.6s Time] [2022-11-20 21:23:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 21:23:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-20 21:23:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:23:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-11-20 21:23:01,734 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 63 [2022-11-20 21:23:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:01,734 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-11-20 21:23:01,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 62 states have (on average 1.7741935483870968) internal successors, (110), 59 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 21:23:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-11-20 21:23:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 21:23:01,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:01,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:23:01,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-20 21:23:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-20 21:23:01,943 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:23:01,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1039475599, now seen corresponding path program 3 times [2022-11-20 21:23:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:01,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677845142] [2022-11-20 21:23:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 21:23:02,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:02,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677845142] [2022-11-20 21:23:02,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677845142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:02,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909747390] [2022-11-20 21:23:02,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:23:02,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:02,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:02,162 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:02,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 21:23:04,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:23:04,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:23:04,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:23:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 21:23:04,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 21:23:04,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909747390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:23:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [247541688] [2022-11-20 21:23:04,546 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-20 21:23:04,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:23:04,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:23:04,547 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:23:04,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:23:04,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:23:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:04,619 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 [2022-11-20 21:23:04,625 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 [2022-11-20 21:23:04,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:04,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:04,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:04,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:04,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:04,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:04,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:04,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:04,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:04,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:23:04,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:23:04,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:23:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:23:04,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:04,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:23:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:04,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:04,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:23:04,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,004 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:23:05,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:23:05,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:05,047 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 [2022-11-20 21:23:05,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:05,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:05,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,090 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 17 treesize of output 7 [2022-11-20 21:23:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,122 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:23:05,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:23:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:05,170 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 [2022-11-20 21:23:05,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:05,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:05,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,208 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 17 treesize of output 7 [2022-11-20 21:23:05,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:05,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:23:05,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:23:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:23:05,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:05,412 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 0 case distinctions, treesize of input 244 treesize of output 231 [2022-11-20 21:23:05,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:05,430 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 0 case distinctions, treesize of input 236 treesize of output 223 [2022-11-20 21:23:05,472 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 27 treesize of output 11 [2022-11-20 21:23:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:05,559 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:23:05,559 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 1 case distinctions, treesize of input 225 treesize of output 227 [2022-11-20 21:23:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:05,599 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 21:23:05,600 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 1 case distinctions, treesize of input 217 treesize of output 215 [2022-11-20 21:23:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,654 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 27 treesize of output 11 [2022-11-20 21:23:05,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:05,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:23:05,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:05,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:05,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,819 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 27 treesize of output 11 [2022-11-20 21:23:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,849 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 23 treesize of output 22 [2022-11-20 21:23:05,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,866 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 27 treesize of output 11 [2022-11-20 21:23:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:05,881 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 23 treesize of output 22 [2022-11-20 21:23:05,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:23:05,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:23:05,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:06,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:06,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:06,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:06,046 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 27 treesize of output 11 [2022-11-20 21:23:06,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:06,078 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 23 treesize of output 22 [2022-11-20 21:23:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:06,095 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 27 treesize of output 11 [2022-11-20 21:23:06,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:06,112 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 23 treesize of output 22 [2022-11-20 21:23:06,340 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:06,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:06,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:06,588 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 165 treesize of output 175 [2022-11-20 21:23:06,689 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 7 treesize of output 3 [2022-11-20 21:23:06,708 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 7 treesize of output 3 [2022-11-20 21:23:06,729 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:06,900 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:06,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:07,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:07,199 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 171 treesize of output 181 [2022-11-20 21:23:07,282 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 7 treesize of output 3 [2022-11-20 21:23:07,298 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 7 treesize of output 3 [2022-11-20 21:23:07,317 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:07,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:07,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:07,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:07,663 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:23:07,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:07,716 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:23:07,716 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 32 [2022-11-20 21:23:07,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:08,080 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:08,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:08,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:08,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 306 [2022-11-20 21:23:09,007 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:09,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:23:09,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:09,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 92 [2022-11-20 21:23:09,323 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:09,331 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:09,399 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:23:09,410 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 [2022-11-20 21:23:09,416 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 [2022-11-20 21:23:09,434 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 [2022-11-20 21:23:09,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:09,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:09,465 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 23 treesize of output 22 [2022-11-20 21:23:09,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:09,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:09,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:09,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:09,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:09,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:09,525 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:19,861 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15837#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:23:19,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:23:19,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:19,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 21:23:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985130246] [2022-11-20 21:23:19,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:23:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 21:23:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 21:23:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:23:19,863 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:19,956 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-11-20 21:23:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:23:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2022-11-20 21:23:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:19,957 INFO L225 Difference]: With dead ends: 70 [2022-11-20 21:23:19,957 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 21:23:19,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:23:19,958 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:19,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 231 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:23:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 21:23:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-20 21:23:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:23:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-11-20 21:23:19,961 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2022-11-20 21:23:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:19,962 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-11-20 21:23:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-11-20 21:23:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 21:23:19,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:19,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:23:19,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-20 21:23:20,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:20,172 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:23:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1791231163, now seen corresponding path program 1 times [2022-11-20 21:23:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:20,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702445761] [2022-11-20 21:23:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 21:23:20,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702445761] [2022-11-20 21:23:20,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702445761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519454427] [2022-11-20 21:23:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:20,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:20,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:20,322 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:20,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 21:23:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:20,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 21:23:20,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:20,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-20 21:23:20,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 21:23:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 21:23:20,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 21:23:21,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519454427] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:21,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:23:21,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-11-20 21:23:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94793955] [2022-11-20 21:23:21,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:23:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:23:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:23:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:23:21,112 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:21,232 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2022-11-20 21:23:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:23:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-20 21:23:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:21,233 INFO L225 Difference]: With dead ends: 71 [2022-11-20 21:23:21,233 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 21:23:21,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:23:21,234 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:21,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 94 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:23:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 21:23:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-20 21:23:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.1) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:23:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-20 21:23:21,237 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2022-11-20 21:23:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:21,237 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-20 21:23:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-20 21:23:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 21:23:21,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:21,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:23:21,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 21:23:21,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:21,439 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:23:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1791233070, now seen corresponding path program 1 times [2022-11-20 21:23:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:21,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679266938] [2022-11-20 21:23:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:21,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 21:23:21,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:21,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679266938] [2022-11-20 21:23:21,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679266938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:21,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403848663] [2022-11-20 21:23:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:21,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:21,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:21,662 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:21,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 21:23:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:22,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 21:23:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:22,282 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 23 treesize of output 15 [2022-11-20 21:23:22,285 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 26 treesize of output 14 [2022-11-20 21:23:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 21:23:22,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:22,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:22,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2022-11-20 21:23:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 21:23:22,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403848663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:23:22,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028540228] [2022-11-20 21:23:22,551 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-20 21:23:22,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:23:22,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:23:22,552 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:23:22,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:23:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:23:22,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:22,619 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 [2022-11-20 21:23:22,624 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 [2022-11-20 21:23:22,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:22,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:22,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:22,649 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 23 treesize of output 22 [2022-11-20 21:23:22,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:22,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:22,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:22,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:22,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:22,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:22,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:22,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:22,844 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-11-20 21:23:22,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:22,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 235 [2022-11-20 21:23:22,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:22,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 239 [2022-11-20 21:23:22,942 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 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-20 21:23:22,957 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 0 case distinctions, treesize of input 240 treesize of output 221 [2022-11-20 21:23:22,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 21:23:23,037 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,235 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:23:23,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:23:23,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:23:23,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:23,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:23,447 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 19 treesize of output 7 [2022-11-20 21:23:23,458 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 [2022-11-20 21:23:23,472 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,474 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,475 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,543 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 21:23:23,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 250 [2022-11-20 21:23:23,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:23,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:23:23,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:23,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 21:23:23,787 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 [2022-11-20 21:23:23,801 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,803 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,804 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:23,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:23,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:23,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:23,921 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 27 treesize of output 11 [2022-11-20 21:23:23,931 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 13 treesize of output 9 [2022-11-20 21:23:23,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:23,974 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 23 treesize of output 22 [2022-11-20 21:23:23,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:23,987 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 27 treesize of output 11 [2022-11-20 21:23:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:24,000 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 23 treesize of output 22 [2022-11-20 21:23:24,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:24,091 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 [2022-11-20 21:23:24,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:24,122 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 13 treesize of output 9 [2022-11-20 21:23:24,132 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 27 treesize of output 11 [2022-11-20 21:23:24,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:24,179 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 23 treesize of output 22 [2022-11-20 21:23:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:24,200 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 27 treesize of output 11 [2022-11-20 21:23:24,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:24,215 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 23 treesize of output 22 [2022-11-20 21:23:24,417 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:24,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:24,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:24,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 418 [2022-11-20 21:23:24,955 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 7 treesize of output 3 [2022-11-20 21:23:24,972 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:24,992 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 7 treesize of output 3 [2022-11-20 21:23:25,136 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:25,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:25,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:25,328 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 128 treesize of output 138 [2022-11-20 21:23:25,412 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:25,425 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 7 treesize of output 3 [2022-11-20 21:23:25,443 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 7 treesize of output 3 [2022-11-20 21:23:25,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:25,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:25,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:25,690 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:23:25,690 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 32 [2022-11-20 21:23:25,704 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 19 treesize of output 1 [2022-11-20 21:23:25,739 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:23:25,739 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 [2022-11-20 21:23:26,122 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:26,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:26,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:26,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 445 treesize of output 447 [2022-11-20 21:23:27,111 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:27,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:23:27,348 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:27,362 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:27,372 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:27,381 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:27,396 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:27,470 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:23:27,479 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 [2022-11-20 21:23:27,486 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 [2022-11-20 21:23:27,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:27,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:27,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:27,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:27,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:27,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:27,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:27,588 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 [2022-11-20 21:23:27,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:27,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:27,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:27,607 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:39,472 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16946#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (= |ULTIMATE.start_dll_destroy_#in~head#1.offset| |ULTIMATE.start_main_#t~mem17#1.offset|) (or (not (= |ULTIMATE.start_dll_destroy_~head#1.base| 0)) (not (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0))) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_main_#t~mem17#1.base|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem17#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_destroy_~head#1.offset| |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (or (not (<= 0 (+ |ULTIMATE.start_dll_destroy_~head#1.offset| 4))) (not (<= (+ |ULTIMATE.start_dll_destroy_~head#1.offset| 8) (select |#length| |ULTIMATE.start_dll_destroy_~head#1.base|)))) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_dll_destroy_~head#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:23:39,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:23:39,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:39,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 21:23:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618133015] [2022-11-20 21:23:39,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:23:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 21:23:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:39,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 21:23:39,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 21:23:39,474 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:39,794 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2022-11-20 21:23:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:23:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-20 21:23:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:39,795 INFO L225 Difference]: With dead ends: 75 [2022-11-20 21:23:39,795 INFO L226 Difference]: Without dead ends: 75 [2022-11-20 21:23:39,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 21:23:39,796 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:39,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 123 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:23:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-20 21:23:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-20 21:23:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 66 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:23:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2022-11-20 21:23:39,799 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 66 [2022-11-20 21:23:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:39,799 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2022-11-20 21:23:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2022-11-20 21:23:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 21:23:39,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:39,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:23:39,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 21:23:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:40,009 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:23:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1791233071, now seen corresponding path program 1 times [2022-11-20 21:23:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:40,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259638582] [2022-11-20 21:23:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 21:23:40,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259638582] [2022-11-20 21:23:40,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259638582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898244503] [2022-11-20 21:23:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:40,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:40,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:40,179 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:40,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 21:23:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:23:40,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:40,779 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 [2022-11-20 21:23:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 21:23:40,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:40,857 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-20 21:23:40,857 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 16 treesize of output 15 [2022-11-20 21:23:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 21:23:40,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898244503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:23:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1739444664] [2022-11-20 21:23:40,878 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-20 21:23:40,879 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:23:40,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:23:40,879 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:23:40,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:23:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:40,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:23:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:40,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:40,966 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 [2022-11-20 21:23:40,973 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 [2022-11-20 21:23:40,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:40,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:40,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:41,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:41,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:41,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:41,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:23:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:23:41,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:23:41,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 21:23:41,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-20 21:23:41,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:41,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:23:41,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:41,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 21:23:41,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,268 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 27 treesize of output 11 [2022-11-20 21:23:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,347 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:23:41,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:23:41,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:41,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:41,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:41,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:41,436 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 [2022-11-20 21:23:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,466 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:23:41,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 21:23:41,518 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 [2022-11-20 21:23:41,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:41,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:41,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-11-20 21:23:41,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-20 21:23:41,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:23:41,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,678 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 27 treesize of output 11 [2022-11-20 21:23:41,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:41,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,710 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:41,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,727 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 27 treesize of output 11 [2022-11-20 21:23:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,743 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 23 treesize of output 22 [2022-11-20 21:23:41,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:41,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:41,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,877 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 27 treesize of output 11 [2022-11-20 21:23:41,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,902 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 23 treesize of output 22 [2022-11-20 21:23:41,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,918 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 23 treesize of output 22 [2022-11-20 21:23:41,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:41,934 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 27 treesize of output 11 [2022-11-20 21:23:42,156 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:42,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:42,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:42,354 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 128 treesize of output 138 [2022-11-20 21:23:42,466 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 7 treesize of output 3 [2022-11-20 21:23:42,483 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:42,501 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 7 treesize of output 3 [2022-11-20 21:23:42,687 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:42,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:42,919 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 165 treesize of output 175 [2022-11-20 21:23:43,057 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 7 treesize of output 3 [2022-11-20 21:23:43,076 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:43,092 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 7 treesize of output 3 [2022-11-20 21:23:43,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:43,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:43,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-20 21:23:43,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:23:43,348 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-20 21:23:43,349 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 [2022-11-20 21:23:43,405 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 21:23:43,405 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 32 [2022-11-20 21:23:43,804 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:43,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 187 [2022-11-20 21:23:44,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:44,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 462 treesize of output 468 [2022-11-20 21:23:45,005 INFO L321 Elim1Store]: treesize reduction 30, result has 63.4 percent of original size [2022-11-20 21:23:45,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 198 [2022-11-20 21:23:45,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-20 21:23:45,261 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:45,270 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:45,278 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:23:45,316 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 21:23:45,316 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 69 treesize of output 63 [2022-11-20 21:23:45,345 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-11-20 21:23:45,356 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 [2022-11-20 21:23:45,364 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 [2022-11-20 21:23:45,380 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 19 treesize of output 1 [2022-11-20 21:23:45,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:45,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:23:45,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:45,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:45,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:23:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:45,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:45,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:45,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:45,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:23:45,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:23:45,474 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:57,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17525#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (= |ULTIMATE.start_dll_destroy_#in~head#1.offset| |ULTIMATE.start_main_#t~mem17#1.offset|) (not (= (select |#valid| |ULTIMATE.start_dll_destroy_~head#1.base|) 1)) (or (not (= |ULTIMATE.start_dll_destroy_~head#1.base| 0)) (not (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0))) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_main_#t~mem17#1.base|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem17#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_destroy_~head#1.offset| |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_dll_destroy_~head#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 21:23:57,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:23:57,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:57,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-11-20 21:23:57,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497751791] [2022-11-20 21:23:57,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:23:57,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:23:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:23:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 21:23:57,530 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:57,733 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-11-20 21:23:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:23:57,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-20 21:23:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:57,736 INFO L225 Difference]: With dead ends: 76 [2022-11-20 21:23:57,736 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 21:23:57,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:23:57,737 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:57,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 113 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:23:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 21:23:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2022-11-20 21:23:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 21:23:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-20 21:23:57,741 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2022-11-20 21:23:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-20 21:23:57,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:23:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-20 21:23:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 21:23:57,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:57,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 21:23:57,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 21:23:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-20 21:23:57,952 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 21:23:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 306351327, now seen corresponding path program 1 times [2022-11-20 21:23:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:57,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440902942] [2022-11-20 21:23:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:23:59,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:59,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440902942] [2022-11-20 21:23:59,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440902942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:59,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095973667] [2022-11-20 21:23:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:59,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:59,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:59,400 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:59,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972640e2-7149-49e6-806f-05edf5f14c49/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 21:23:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:59,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 21:23:59,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:24:00,386 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 8 treesize of output 4 [2022-11-20 21:24:00,391 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 7 treesize of output 3 [2022-11-20 21:24:00,519 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_7698 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| v_ArrVal_7698))) (exists ((v_ArrVal_7697 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_7697)))) is different from true [2022-11-20 21:24:00,531 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_7699 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| v_ArrVal_7699))) (exists ((v_ArrVal_7700 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| v_ArrVal_7700) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 21:24:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:00,625 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 15 treesize of output 17 [2022-11-20 21:24:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:00,635 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 14 treesize of output 16 [2022-11-20 21:24:00,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:00,853 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 18 treesize of output 22 [2022-11-20 21:24:01,065 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 21:24:01,066 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 21 treesize of output 20 [2022-11-20 21:24:01,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:01,140 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 14 treesize of output 16 [2022-11-20 21:24:01,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 21:24:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 2 not checked. [2022-11-20 21:24:01,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:24:02,072 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_append_~last~0#1.offset| Int) (v_ArrVal_7704 Int) (|ULTIMATE.start_dll_append_~last~0#1.base| Int) (v_ArrVal_7715 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_107| Int) (v_ArrVal_7705 (Array Int Int)) (v_ArrVal_7714 (Array Int Int))) (let ((.cse0 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_107| v_ArrVal_7714) |ULTIMATE.start_dll_append_~last~0#1.base|) .cse0) 0)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_107| |c_#StackHeapBarrier|)) (= (select (select (store (let ((.cse1 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_107| v_ArrVal_7715))) (store .cse1 |ULTIMATE.start_dll_append_~last~0#1.base| (store (select .cse1 |ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 v_ArrVal_7704))) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_107| v_ArrVal_7705) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from false [2022-11-20 21:24:02,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095973667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:24:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [566697688] [2022-11-20 21:24:02,076 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-20 21:24:02,076 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:24:02,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:24:02,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:24:02,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:24:02,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-20 21:24:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:24:02,150 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 [2022-11-20 21:24:02,156 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 [2022-11-20 21:24:02,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:24:02,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:24:02,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:24:02,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:24:02,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 21:24:02,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:24:02,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:24:02,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 21:24:02,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-20 21:24:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 21:24:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-20 21:24:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:02,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10